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	NEW YORK, SEPTEMBER 12, 1857.	NO. 1.

THE

SCIENTIFIC AMERICAN,
PUBLISHED WEEKLY

At No 128 Fulton street, (Sun Buildings,) New York,
DY 1~IUNN &#38; Co.

O~ B. 3IU1~N, S. II. WALES, A. 2. HEACTI.

	Responsible Agents may also be found In all ths
principal cities and towns in the United States.

	Sampson Low, Son &#38; Co., the American Booksellers,
47 Ludgate Hill, London, Rug., are the British Agents
to receive Suhecriptions for the Soesisrisic Aasuic~.

	Single copies of the paper are on sale at the office of
publication and at all the periodical stores In this city,
Broo~~ an dJersey City.

	TERMSTwo Dollars per annum.One Dollar Ia
advance, and the remainder In six months.

	t7 See Prospectu, on last page. No Traveling
Agents employed.



New Water l~foter.

	Liberal supplies of water in cities are bless-
ings which cannot be too highly appreciated.
To prevent waste, however, the necessity of
some method of recording the quantity used
in each household or establishment, is very
much felt, and various methods have been
adopted for effecting this result. None, how-
ever, measure with absolute mathematical
perfection, some are quite expensive, and
nearly all have stuffing boxes, packing, or
the like, rendering them more or less liable to
get out of order.
	The meter represented In the accompanying
engravingsan apparatus recently invented
by James Coebrane, of this cityis so ar-
ranged as to require no packed parts, to work
practically independent of friction, and to af-
ford a means of measuring with great ac-
curacy whether the flow be rapid or extremely
slow. It has beon constructed in various sizes,
and is already in successful use In several
portions of this city.
	The water is received in a rockIng cup,
divided in two compartments. When tilted to
one side, the partition induces the water to
accumulate in the upper side until its gravity
is sufficient to tilt the cup and discharge the
quantity thus measured and weighed, and in-
duce its accumulation on the opposite side.
So far, this is an old device, but to allow the
apparatus to work under a head and without
diminishing the pressure of the water, the
case or vessel in which the whole is enolosed,
is partially filled with compressed air; and to
prevent the loss of this compressed air by its
escape through the por~ of the metal, or its
absorption by the water, provision is made for
discharging, at each movement of the rocking
cup, a small quantity of water from the lower
part of the case. and for receiving in its place
an equal volume of air from the outside,
which is allowed to rise through t.he water, as
represented.
	Fig. 1 is a perspective view of the whole,
the upper portion being of glass, to allow a
view of the interior, while figures 2 and 3 rep-
resent sections, on a larger scale, of the device
for supplying air. Fig. 4 is a vertical section
of the whole, as ordinarily constructed of cast
iron.
	A is the pipe which supplies the water, and
B a recoiving and retarding vessel bolted upon
the top of the main case, C. This vessel
serves as a kind of air chamber, and allows the
water to fall gently into the cup below. D is
a cock, through which the water is discharged,
and E E is the surface of the water within; it
being understood that the air above B is at
the density required to equal the pressure due
to the head of water. This density is acquired
in the first instance, simply by the rise of the
surface, B B, which thus compresses it. F is
~the rocking cup, and F the partition therein.,
The cup being supported on suitable bearings,
its pivot is free to roll horizontally, to a slight
extent, and thus to make the resistance a
rolling rather than a sliding friction. G is a
lever, mounted in the same frame with F
and immediately below it. It is slightly bent,
as described, and immediately below it is a
cross bar, H, which regulates the extent to
which either end of the lever, G, may be de-
pressed. The center of gravity of the rocking
cup, F, is at the point indicated by the star in
Fig. 4, and its motion with the vibration of
F, is a curve, as represented by the short
dotted line. The center of gravity is thus
lower at either extremity of its motion than at
the middle of its vibration; and, in short, by
well known laws, the cup inclines with a cer-
tain uniform degree of force, to remain at
either extreme of its motion. The water re-
ceived from B through the tube represented,
accumulates on one side of F until its gravity
is sufficient to overcome this tendency, when
the cup rapidly tilts, and dischaa~ing its load
on that side, commences to receive an equal
amount on the other. There is no resistance
to the commencement of this rocking motion,
except the gravity of the cup, F, and the
rolling friction of the support, but towards the
close of its motion it strikes the elevated end
of the lever, G, and depresses it. The devices
for recording the strokes, and also for receiv-
ing the air, are worked from this lever, G, by
the aid of the rod, I; and both these opera-
tions, though necessarily communicating with
the exterior of the case, are performed without
the aid of a stuffing-hex of any kind.
	The light joint required at the point where
the motion is carried out through the case, is
obtained Isy the use of a kind of miniature
]
slid, valve, held to its seat by the pressure of
the fluid within. A hollow projection, K, ex-
tends upward from the bottom into the interior
of the ease, A. Its interior communicates
freely with the atmosphere, and its exterior is
plane on one side and perforated, as represented
in Fig. 2, the perforations being covered by
the small slide valve, J. This slide valve is
connected by the rod, I, to the lever, Q, and
consequently moves vertically on the plane
surface of K, at each movement of the latter.
	The indicating mechanism is on the exterior
of the case. It is similar to that ordinarily
employed on gas meters and the like, and car-
ries several indexes, which work on the face
of corresponding dials, as represented by R, in
Fig. 1. A ratchet wheel on the lowest and
quickest shaft is operated by a paw], which
latter is connected to the work inside through
the rod, L, which stands loosely enclosed in
the interior of K, and is connected firmly to
the slide valve, J, at the point. It, Fig. 2.
This connection avoids the necessity for a
stuffing box.
	When the valve, 4, is In its lowest poiitioss,
the water in its interior escapes through the
aperture, K, and air from the interior of K
flows in through the aperture, J, to supply its
place. Now when, by the means described,
the valve, 4, is raised to its highest position
(that represented in the figures) the air freely
escapes from the interior of 4 through the
cavity, J, and water finds access through side
openings, imperfectly represented by dots, so
as to flow in through ,J. At each movemesit
of G, therefore, the indicating apparatus, It,
shows that water has beess discharged from
the cup, F, and also allows a quantity of air
to rise in bubbles through the water, as shown
in Fig. 4.
	The various pipes and cocks connected to
the base of the case, C, serve to draw water
therefrom in the usual manner. They may
discharge it directly at the cock from which
it is seen flowing, or may lead it in the pipe
represented to any distance, and the whole
apparatus serves as an air chamber to regulate
the motion of the water.
	The device for receiving air is made a little
larger than necessary, in order to ensure a
sufficient supply of that fluid within the case.
Under ordinary circumstances, no harm can
arise from a too great accumulation of air, as
the aperture K which obstructs the water
being hi0her than either of the other outlets,
it simply follows that if the water surface be-
comes too low, small quantities of air instead
of water are discharged through the cavity of
the slide valve, J, and as the density of the
air escaping is greater than that introduced, the
effect of this device is to reduce rather than
increase the quantum of air in the case, C;
thus there is no possibility of too much air ac-
cumulating, except under unusual circum-
stances. In case the pressure in the street
main should he suddenly diminished, in con-
sequence of the bursting of a pipe, or of an
extraordinary quantity being drawn out in
case of a fire in the vicinity, the air enclosed
in C, by expanding, might force its way back-
ward into the main. To avoid this, the
reservoir, B, is arranged, as represented, so
that it will receive and contain any air which
might thus be displaced, and hold it ready
for discharge into the case C again, so soon
as the pressure is restored. The inventor is
ready to guarantee that these meters will
operate perfectly without any attention for
seven years, and it is presumed that they will
endure for a much longer period without any
derangement. This invention was patented
March 24, 1857.
	For further information, address the inven-
tor and patentee, at his residence, No. 8 Tenth
street, near Sixth avenue, New York.
THE ADVOCATE OF INDUSTRY, AND JOURNAL OF SCIENTIFIC, MECHANICAL AND OTHER IMPROVEMENTS.
COCHRANES WATER METER.
	I	Fi~ 2
	I	I
ii
	II
	is
II	ii

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Issued from the United States Vatent Office

	FOIl THE WEEK ENDING aEIrE~BEIl 1, 1857.

CReparted officially for the Scientific American.)

CUTTING COEN SruuoLnJohn Anespurger. of Tren-
ton, 0. I claim the described (or substantially equiva-
lent) combination with the teeth of a rake, of rotating
knives, for the purposes set forth.

Tsmu.sPhilipe Baillan, of New York City: I claim
the fiat spring, a, or its equivalent, at the back end of
the thills, b, arranged and operating in the manner and
for the purpose substantially as described.

SEALING CANsEdwin Bennett, of Baltimore, Md.
I am fully aware that caps and stoppers and othr seal-
ing devices have been employed in applicaticn to jars
and vessels containing fruit or other substances, and
consequently I do not claim any of said devices as
known or used.
I am also aware that plastic and adhesive suistinces
have been used and combined with caps and stoppers
for various purposes, but I disclaim such materials and
combinations.
I claim the construction of a cap formed with a flar-
ing lip-like rim, b b b b, and groove or gutter, C C, and
combined with a stopper part, d d e e, arranged and ap-
plied to an inverted jar, or other receptacle, in the
manner and for the purposes substantially as set forth.

RAxssAndrew J. Blodgett, of Newport, N. II. : I
do not claim spring teeth applied to a rake head.
But I claim making each arched brace rod and one or
two teeth in one piece of wire, and extendine the same
through the rake head, and into or through the handle,
substantially as specified.

XVmaneo BLIND Rous.Byron Boardman, of Norwich,
Conn. I claim the means employed for feeding the
staples. p, between the guides, fi d, and underneath
the die or rod, K, that is to say, the plate, M, pivoted
to the place, 1, on which the staples are placed. and
provided with the shoullers, n n, the plate being con-
nected with the bar, f, by means of the rod, o, substan-
tIally as shown and (lescribed.
1 also claim feeding the rod, G, underneath the
nides, d d, to receive the staples, p, by means of the
~ ar,J, attached to the bent lever, I, in connection with
the lever. E, said parts being operated by their respec-
tive springs. A u, and also byt he bar, f, as described.
I further claim the guides, d d, arraneed substan-
tially as shown, to convey the staples to the rod, and at
the same time also allowed to expand, so as to prevent
the clogglug of the same, in combination with the die
or rod .7K, for driving the staples into the rod.
[1his machine affixes the staples to the vertical rod of
coiling-slat blinds with very great accuracy and uni-
formity, and with great op ed. Tue spaces between the
staples maybe lengthened or shortened by a simple ad-
justment of the parts.]

SPOOLING TuacAnCharles IL Bradford, of Lynn,
Mass. : I do not chains combinin-- with mechanism for
rotating a spool or bobbin a meci?sanisna for regulating
the winding or laying of the thread on such spool or
bobbin.
But I claim the improved mode of regalating the
winding of the thread, that is, by causing use thread
carrier to rest directly against and be moVed and guided
in its movements by the side of the helic coil on the
bobbin, as stated.

	COAL SiFTeasWilliam D. Brown, of Weymouth,
Mass.: I claim the combination of the screen, J J, ana
the plates, K and L, placed in a vessel or machine, to
be used as a portable coal hod and sifter, so suspended
on an axis as to allow of an oscillating or swinging
movement, all arranged and operating atm the specifi-
cation described.

	SEEDING MACIIINESCbarlei W. Caboon, of Brook-
lynN. Y.: I do not claim the slide,, b, nor the rock
shalt, c, with the hopper.
	Neither do I claim distributing or sowing seed broad-
cast by means of centrifugal force effected by the rota-
tion of wheels arcyl in d ers, irrespective c~ the construc-
tion and arran-ement shown.
	But I claim the disk, H. and rock shaft, c, with its
teeth, d, in combination with the funnel-shaped dis-
charger F havin- spiral flanches, p. arranged substan-
tially a~ and for the purposes set forth.

	(This machine distributes either seed or fertilizing
material in a very perfect manner, and without the
employment of any reciprocating parts. The distribu-
tion may be very accurately graduated.]

	STRAW CuTTxzsAury G. Coes, of Worcester, Mass.:
I claim my improved straw-cutting machiiae, construct-
ed so that its bed and knife shall each operate with a
compound motion Iinroduced by a lever, crank, fuleruns
rod, and gssidss, arranged so as to operate together,
substantially as specified.

	ORE SmAnAvonThomas J. Cbnbb, of New York
City: I do not claim the separation of substances of
difterent specific gravities, by submitting them to this
action of a blast of air through a screen.
	But I claim first, The employnsent. in combination
with an inclined periorated table or bed, and a bellows
operating as specified, of a number of channels, applied
and arranged subotantially as deseribed. relatively to
thebed and to each other, to convey away the separated
substances in different directions, as set forlb.
	Second, The division of a bellows, applied and operat-
ing in connection with a perforated bed, for the separa-
tion of articles of different specific gravity into numer-
ous chambers or compartments, each having Its separate
valve or valves, and constituting in itself a complete
bellows, for the purpose specified.

	(These are other features of the device for which a
patent was issued last week. See notice accompanying
the claim on page 410, volume 12.]

	WASOING BormesIlenry N. Degraw. of Watervielt.
N. Y. : I am aware that expanding brushes constituted
similarly to the one described have been nrevioushy
used for the same purpose, but they have been arranged
in quite a complicated way, so as to preclude them from
general use, on account of the cost attending their con-
sirmiction and keeping thena in repair.
	I do not claim separately, or in itself considered, the
expanding brush, for that or its equivalent, has been
previomisi y used.
	But I ci ahn the expanding brush formed of the brush
bars, I d L, connected to time rod, F, and bar, G, as
shown, and expanded and contracted by the lever 0
and spring, P. when said brush, thus arranged and
operated, is used in connection with the sliding holder,
It, for the purpose set forth.

	[This is a very simple arrangement of the parts, and
operates very rapidly and efficiently. We are prepar-
ing engravings to illustrate this invention.]

	SwrasGING HATCHET IlcAntLevi Dodge, of Cohoes,
N. Y. : I claim the apparatus ulescribed, viz., the block
cheeks and former to be constructed and operated sub-
stantially as and for the purposes set forth.

	LiFE-PRESERVING BmuerrneEhhsridge Foster, of Hart-.
-	ford, Coun.: I claim time adjustable inflated keels, in
	the manner and for th. purpose set forth.
	SAWING STAvEsPeter Deal, of Amsterdam, N. Y.,
and James Greeman, of Northampton, N. Y.: We
claim first The combined method of snpportin~ and
driving cylindrical saws from their periphery, an the
manner and for the purpose described.
	Second, The arrangement on the interior of a cylin-
drical saw, of a supporting lable, and an adjustable
gage or guide, as described by which the thickness of
the stave is gaged, and it Is guided during Its passage
through the saws, and one stave Is prevented from pass-
ing each other, and jamming against and stopping the
saws, or throwing the front stave off the side of the ta-
ble on the bottom of the saws.
	Third The arrangement of a guard plato on the in-
terior 4 a cylindrical saw, as described, for the purpose
of preventing the sawdust and chips being thrown into
the kerf of the stave.
	Fourth, The method of diminishing this pressure of
time curved surface of the stock against the periphery of
a cylindrical saw, by pivoting the track on whaich time
carriage holding the stock traverses1 so that Ihe pressure
of the forward end of the stock will throw the track
outward, and thus prevent the saw from binding In the
kerf.
	SAW CLAMPLeonard 0. FaIrbanks, of Bridgeton,
Mc. : Now I do not claim a saw clamp made with jaws,
and with a clamp screw extending through such jaws,
perpendicularly to their holding faces.
	But I claim my improved saw clamp, as made with
its jaws, clamping device, adjusting screws and bed
plate, arranged and applied in manner and so as to
operate togethar, substantiafly as described.
	I also chains making the stationary jaw with a groove.
e, arranged in it, in manner and so as to operate with
the movable jaw, when constructed and made to act
with respect to the stationary jaw and bed plate, as ex-
plained.
	LoosiNG FAUcETsHenry Getty, of Brooklyn, N.
Y.:	I clams, in csmbination, the L-shaped grooves,
e h, at the upper part of the spring barrel, stop bar. f,
anu the secret stop arm, K, placed loosely over the
valve stem, and attached to the screw collar, whereby
facilities are offered for fastening the faucet closed, and
also when necessary of placing it beyond the control of
servants and others not entrusted with Its manage-
ment.
	(The locking is performed by means of a secret screw,
and may confine the faucet either in an open or closed
condition. The faucet is also of superior construction
in regard to several other points, one of which is tIme
facility wills which the parts may be made accessible
for the removal and exchange of a spring, or the like.]

	ANImAl. TRAPsGeorge hart, of Granger, 0. : I
claim the am-nine, C C, springs E E, and ring, J, when
arranged substantially as set forth, for the purposes de-
scribed.

	OPraIATING Tmi Cuvvras OF HAavzrrmczsJanses
hlavihand, of Milton, N. Y. : I claim imparting the
requisite movenacuts to the cutter blade of a harvesting
maclame, by museans of the spirally grooved intermediate
shaft, B, and the series of hemispherical or oval Imeaded
teeth, e e, projecting from the face of tIme snain bearing
wheel, A, anul operating upon the said intermediate
shaft, substantially as set forth.

	SPIRIT STILLSEdward Herrmnc, of Walton-on-
Thames, England: I claim first, Giving to the dia-
phiragme which separato time chambers an inclination or
fall towards alternate sides of the still, as described, for
time h)LlrPG5II specified.
	And secondly, I claim the Introduction of hot air,
sumbetantially in the manner described for the purpose
of aiding in time evapormation of the wash, and keeping it
in magitation, to prevent the clogging of the stilL

	SURF AND Lirs BOATsItiehmard C. llolmes, of Cape
May Court House, N. J. : I do not claim separately the
buoyant chambers, the valves or the water tank.
	Beut I claim constructing a host of the peculiar form
described, and giving to a boal of that form buoyant
ends, bahlasling tank, and freeing valves, all construct-
ed and Gimerating substantially as described and for the
Imurposes specified.

	RAKING DEVmCE FOR HARVEsTEIIsStephen It. Hun-
ter, of Cortlandi, N. Y. : I claim the rod, K, or its
equmivalent, and two gates, J N, applied to the machine
as shiown, the gates beinut operated from the wheel H
by useans of the cam, D, crank sluaft, H, rod, L, ~mnd
arm, SI, arranged substantially as uisown, for the pur-
pose set forth.
	[This is intended mors especially as an improvement
on tIme harvester formerly patented by the same inven-
tor, but it may be applied with advantage to all which
are similar in their general features. The raking is
accomplished by the two gates alone, without the em-
ployment of any rake, properly so called.]

	lIun FOR CARRIACE Wnxzm.s.James XV. Jackson and
Lutiser W. Burchinal, of Smitimfield, Pa. : We do not
claim a hub composed of two plates and corresponding
tenons, within which the spokes are to be inserted.
	But we claim making the mortises of time hub adjust-
able in two different directions, so that the spokes of
the wheel shall be grasped on their four sides simul-
taneously when the two plates of time hub are forced to-
gether by the screw bolts, in the manner substantially
as set forth.

	FEED AND GloomNo FOR SAW MmLLsGeorgs D.
Lund, of Yonkers, N. Y. : I do not claimn seluarately
tise cones, F G, for they have been previously used;
nor do I clams separately any of the parts shown.
	But I claim time combination of the two cones, F G,
the conical hub or boss, T, and pinion S on time sleeve
or collar, It, placed on the sliding shatl, tf, of the cone,
G, and time gearing, a K N 0, arranged as shown and
described, for the purpose set forth.
	(TImis device allows the log to be fed forward at any
variable rate, and to be gigged back with an increased
velocity. It can be applied to mills now running, ala
moderate expense.

	SACK FAsTmns-s:it.-..Wilhiam P. and Jacob E. B. Max-
son, of Albion, Wit.: We claim a bag or sack fastener,
consisting of a spring tongue pressing the strin aainst
a side flange or projection, so as to form a self-hm;lding
nipper clutch when the said sash fastener is made of a
single piece of metal, cut and bent in the manner sub-
stantially as described.

	Cniara-xv CAPSIra Mayhew, of Albion, Mich.: I
claim time constant openings, A A A, inamedmately be-
neatis the drip of the roof, B B B, In combination with
the larger variable openings, C C C, which are furnish-
ed with valves, D B D, hung at points, F F F, and sep-
arated by the connecting rods below, as shown, for the
purisose specified.

	Smeowint BATH AsIARATUsWllhiam Meyer, of Pro-
gress, N. J. : I claim the lower rose, by means of which
water can be thrown upwards, and a more perfect
and thorough shower bath is obtained.

	GAs REGULATORSJOhn H. Powers, of Newark, N.
J.:	I do not claim the connection of the valve with the
inverted pressure cup by means of a lever.
	But I claim the arrangement of the inverted cup-
shaped valve1 D, and its seat of quicksilver, and the
lever, H, which connects the said valve with the pres-
sure cup, all within the pressure cup, substantially as
described.

	(The automatic regulating of the pressure of gas is
a subject which has attracted much attention. This is
an improvement on the form of regulators, in which the
opening is controlled by the pressure of the gas on an
inverted cup floating on a valve seat of mercury.]

	COTTON SEED PLANTERsThOmas J. Rogers, of Cats-
yule, Ga.: I claim forming one side of the eduction
aluerture of a cotton seed planter of the extremity of a
sharply vibrating plate when the opposite side of said
alserture is formed of an adjustable flaring concave,
substantially as set forth.
	SEWING MAcmalEsOrson C. Phelps, of Rochester,
N. Y.: I do not claim the use of a spring immediately
connected with the needle, or with the socket fom~ hold-
ing the needle, or any spring attachment, for a similar
purpose, not directly atisehed to the needle bar, as
seen in the patent of I. M. Singer and others.
	Bust I claim constructing the needle bar of sewing
machines with a cap or helmet, D, on its top1 and a
spring, b, or other elastic material which is equivalent
in its effect, as India rubber, air, &#38; c., interposed be-
tween the parts, for the purpose of giving a yielding
bearing to the tisread bolt, but in drawin- in the stitch,
and when the shuttle passes the loop, whereby a very
fine thread may be used without breaking, and a better
seam produced, in consequence of the even tension of
the thread and gradual drawing in of the stitch, as de-
scribed.

	LAeerzaacsJosepli A. Rohrman, of Philadelphia, Pa.:
I claim first, Constructing square frame lanterns with
the corner uprights of squmare wire or metal rods, and
the door frame of a single square wire or rod bent in U
form, secured at its ends by a strip, the whole arranged
as and for the purposes described.
	Second, I claim in combination with square wire cor-
ner uprights, the peculiar attachment of the guard
wi~es by simple grooves and dovetusihed ends, as sOS-
scribed. tIme whole constructed as and for the purposes
set forth.
	Third, Formine tongues g, in the bottom and top
plates, or either for spring stops to secure the glasses in
position, and also for the admission ot air necessary to
the combustion of the lamp flame, substantially in the
manner set forth.

	Anwsrmeo CARRIAGE TopsC. W. Saladee, of Colum-
bus, 0. : Now I do not claim the lateral rod, B B, when
Islaced on the outside of the scat back, for the imurpose
of adjusting time top, a.s new, Letters Patent having
been granted to nine for the sumac, dated September 9,
1S5~h.
	Bumi I claim extending th~ top prop, A, back of the
rest iron, B, a sufficient length to form the lever, C, in
combinatiGn with the lateral rod, D D, as shown.
	I also claim the scroll sprin-, H, in combination wilh
the pivot iron, L, and tIme back bow, H, (or to either of
the oIlier three bows,) for the purpose of assisting in
raising lime top, and likewise to prevent Ito falling with
the fufi force of its own weight, when in the act of
tharowing it back, substantially as set fortlm.

	ATTACICuNG WGIFFLETREEB vo Tow LINECAndrew
Seaman, of Amsterdam, N. Y. : I claim tIme shaft, C,
within tongue, B, attached, in combination with the bar,
E, with hever, F, attached, tise above paris being fitted
to time rods, B B, and the whole arranged subslantiaily
as and for the purpose specified.
	(This is to facilitate the connecting and disconnecting
of horses to the tow lines of canal boats, so as to avoid
the liability of horses being dragged into the canal.
The whiffietree is instantly detached from the tow line
at any moment, by simply pulling on a hoop, and thus
moving a lever.]

	Ssmoovnueo IRoNs Win F Sisaw of Boston, Mass.: I
do not claim heating a flat iron hy means of a lamp
having its wick tube, or time flame of its wick, within
the body of the iron.
	Nor do I claim heating a flat iron by chaurcoal or oilier
fuel burned in a chanaber within the body of the iron.
	Nor do 1 claim the application of a wire gauze or per-
forated clmimney to an air and gas burner, so as to sssr-
round the flame, as such has heretofore been patented
by me.
	But I claim making the flat iron with ascending and
descending fines, inlet and discharge openings, arranged
tIme body of time iron, and so as to be used with a burner
and stand, in nmanner substantially as specified.

	PORTABLE GAs GENEuIAToRsWarren A. Simonds,
of Boston, Mass. : I clalun thus tubular retorts, B and C,
of the form described, operating in ilme manner substan-
tially as set forth, for the manufacture of oil gas.

	DRAWING TImE CURVE OF CIRCULAR STAIR ItAIL~vAvs
	George S. Stewart, of Meadvile, Pa. : I claim the
construction of a macmine with an adjumolable table, B
C, and the graduated post, B, and scums, T, adjusted
with the set screws, ~ i, and thins senaicircie, F, con-
strsmcted as described, or any other substantially the
sanme, and which will produce the same results.

	SusiineDING EAVEs TRoUGHsJames A. Watrous. of
Green Spring, 0. : I do not claim the suspending of
save troughs by bolts and nuts, as patented by Wood-
ruff.
	But I claim the employment of a metal strap, B, in
combination with the cross bar and the slotted plate,
C, for securing and readily adjusting save troughas.

	PLANmNO SAW TEEmJohn N. Wilkins, of Wauks-
gan, Ill. : I claim the two planers or cutters, j K, fitted
within the case, A, and operated as shown, in combina-
tion with the guide or cross piece, d, within the case,
the whole being arranged and applied 10 the saw as
shown, for the purpose set forth.
	(This machine shapes all the inclined edges of saw
teeth with perfect uniformity and accuracy, and insures
that in this respect the saw is in perfect order with very
little trouble and expense.)

	FORGING METALSHibridge Wheeler, of Fehtonville,
Stats. : I claim olmerating the roll B at stated Inter-
vals by means of the described arm!angsmsnt of cams
and~levers, or their equivalents, whereby I am enabled
to roll a piece or bar of metal to a given pattern, in the
manner substantially as set forth.

	PIPE COUPLINOE. Wright, of Boston, Mass.: I
claim the use of a compressible packing ring inserted in
a groove around the pipe on each side of the joint, in
combination with screw threaded or flanged and bolted
couplings, and a thuinable hoc holding the packing ring
in the grooves, so as to form a water-tight joint and re-
sist separation, by the packing ring serving as a dowel.

	PERCUSSION CAP Pmummsaus{~eorgs XV. Baker, of Bur-
limmgton, Vt. : I claim as a new article of manufacture
the described percussion cap prinmer, whose improve-
ment consists in time peculiar construction which enables
one side of the case of said primer to serve as an elastic
cap retainer at time side of the outlet of said case, sub-
stantially as set forth.

	MOVING STORES, &#38; C., IN CASE OF FINEAsa Blood,
Sen., of Norfolk, Va., and Robert XV. Brown, of Wash-
ington, B. C.: XVe claim the manner described for
movimmg the adjustable stalls, by means of the lsver H
rod, F, and clinch, II, on rollers, I, and track, 0, as set
forth and described.

	ATTACuINO ScornEs vo SNAilsOliver Clark o
Henrietta, 0., (assignor to Aaron H. Pinney, of Colum-
bus, 0.) : I do not claim the making of a scythe with a
curved heel, as I claimed that in my former patent.
	But I claim the snetallic block, A, in combination
with slyrrup bolt, e, collar, f, and scythe heel, d, con-
structed and arrangod in the manner and for the plir-
pose set forth.

	SLIDING REST FOR LATmmzeE. S. Gardner (assignor
to Smiths, Gould &#38; Cs.) of Phihadeiplala, Pa. I claim
tIme revolving collar, C, with its square eye, 110, wlmen
the same is employed in conjunction wills the steady
rest of a turning lathe, for which a luatent was granted
to Albin XVumrth, on the 111th day of October, 1854, in the
manner and for the purpose set forth.

	CRozineaum AND CIIAMFEEING STAVEs-H. L. MeNiels
of Lowell, Mass., assignor to B. C. Butler and H. L.
MeNish, aforesaid: I claim the self-opening and closing
clamp described, or its equivalent, so geared to other
parts of the machine as to operate hueriodicahly corres-
ponding with lIme motion of the feed rollers as set forth.
	I also claim making the champs adjustable to croze
staves of barrels of different diameters as set forth.

	CoNDENsERs FOR LIST SiilrnEReWm Mattison ~as-
signor to J. C. Whitin) of Northmbridge, INtase.  I claim
the self-adjusting weight or condenser, F. applied in
the manner described, and retained in its position by
the casing or bonnet (0, or its equivalent, substantially
as described for the purpose specified.
	HEAD RusTs-Win. M. McCauley, (assignor to J.
N. Molntire) of Winithinglon, B. C. : I claim pivoting
the rocker or shank, A, of the head plate in the sta-
tionary holder, C, in combination with the segmental
spring, e, whereby the head plate accommodates itself
to any inclination of the head, and forms a springing or
elastic support, the wholo constructed and operating
substantially as described.
	I do not broadly ciatm pivoting the head plate to the
stationary holder.

	CARDING ENGINES-H. N. Gambnill and S. F. Burgee,
of Woodhury, Md. Patented in England April 14, 1857.
I claim delivering the cotton on to the main cylinder
always at two and sometimes at three different points
or places, whi\st using but one set of feeding rollers,
substantlail y as described.
	Xls aiso claim the combination of the working cylin-
ders, B B, and the working and stripping cylinder, H,
all running in the same direction, and worliing in con-
nection with each other, and wills the main cylinder as
set forth, the two first, B B, delivering the cotton to the
nmain cylinder regularly, whilst the latter H is doing so
at intervals, substantially as described.
	We also claim m~i~gthas strtppings taken from the
main cylinder by the stripping cylinder H, with the
cotton on the c hinder B, carding it and returning it,
thus muted an{ carded to the main cylinder, substan-
tiaiiy as set forth.
	XVs also claim, in combination with the cylinders, the
stationary casing and the concave for separating the
dirt from the cotton, whilst undergoing the carding pro-
cess as set forth.
	XVe also claim, in contradistinction, from giving the
variable motion to the cylinder, H, by cone pulleys,
and a travelin~ belt attached to each carding engine,
the giving of sasd motion to a shaft or line of simafting,
and imparling it from said shafting to the engine by
simple belt and pulleys, by whicla means more certain
action Is had and at less expense, as set forth.

	CASTING BEARINGS IN IRoN Wnuxs.sChas. Taylor,
of Little Falls, N. Y. : I claim the emnployment of the
bevel or oval cap piece, A, or its equivalent, when ills
used in connection with this pins, B B, or their equiva-
lent, and made to operate in the manner and for the
purposes described.

	SOCKET COUPLING FOR LATIIESG. N. Trowbridge,
of Lowell, Stass. : I do not claim a simple conical pin
for fuaslening the shank of a tool in a conical socket, but
I claim thins combination of the spring H and pin F,
with time conical shank and socket, with straight screw
allached, for tIme purpose and substantially as described.

RE-ISSUES.
	LoosesB. XV. Sneil and S. S. Bartlett, of Woon-
socket, It. I. Patented January 11, 1857: We do not
claim luriority in using strain as a means of regula-
tion, for under various modifications, it is found in use.
For inslusuce, Hendrick employs strain acting uiuon or
with the movable reed as his regulating festumre; also,
Stone, Potter and othasis, their motions acting in com-
bination with an intermittent take-up mothon;
Knowles, Boyd, Bigelow, Stason, and others, use one or
more stationary or reaching vibratory whaip-rohls as
their point of regmilation, while Tayhor and Wilcox and
othacre employ the beans as a means of regulation.
	Buit we claim, first, Employing the positive take-up
mechasnism or chothin roll, or any ieaocluanism acted on or
affected by the strain of the clothin, when a positive take-
up is used as the point through which the variable
strain and wind of warius is made to act more sensitive-
ly than from or by the variable vibratory re-acting mo-
tuon of thue whip rolls, or sudden jerking of the beam or
movable reed.
	Second, Effecting and producing a regular delivery
and uniform strain of the warps by the equahmzmng
strain lever, P, or equivalent, said lever being acted
upon by the variable strain of time warps or chothu,
thinrougli time positive take-up mechanism or cloth roll,
as represented.
	Third, The equalizing strain lever, P, or analogous
device, wimen operating in connection with the positive
take-up mechanism or cloth roll or when effected by
the strain of the cloths, in combination with any me-
chanism for producing a rotary motion to the beam,
and with any device or means for regulating the de-
livery and strain of the warps as the beam decreases In
diameter, and as the desired strain requires.
	Fourtim, Employing the rod T, within the pin X, or
equivalent, to act upon the strain lever, P. as a means
of moving thins weighmt, K, when the balance spring, 5,
or equivalent device is not sufficient to move it.
	Filth In combination with the pulley, F, and pinion,
C, we dams the movable weight, L, the fixed or yield-
ing sectional friction piece (0, and friction lever, J, as
and for the purpose represented.
	Sixth, In combination with the wei5ht, K. and fric-
tion lever, J, we claim the rack N, or its equivalent, to
so act upon weight K, through catches L, or analogous
devices, as to gradumahly move this weight, K, towards
the fuhoruna of lever J, as the beam decreases in dia-
meter, and as the desired strain of warp requires.
	Seventim, In combination with the weight, K, and
filetion lever, J, or equivalent devices, we claim the
jointed or stationary sectional friction piece (0, and set
screw, H, as and for the purpose represented.

	CARDING ENGINESWin. II. Walton. of New York
City. Patented Dec. 9, 18513. Re-issmied Jan. 13, 1857:
	I wish ills be distinctly understood that I do not claim
two sets of feed rollers cousbined with a carding ma-
clining, as they have before been used. Nor do I claim
two independent hickems in working on to the main
cylinder, when they are miot need as workers together,
as they are on machines previously devised.
	But I claim suspending the top flats or workers upon
pivots in time center of their ends, by whiclm they can be
raised out of the way of the adjoining flats, and turned
by a rack working into pinsons or the equivalent
thereof, the whole being constructed and arranged sub-
stantially as described for the purpose set forth.
	I also claim stripping the flats or workers by a ro-
tating brush, so arranged that a card misy strip tIme
brush, and return the strippings to the nasin cylinder,
substantially in the manner and for the purposes de-
scribed.
	I also claim the combination and employment of two
or more lickers in, acting as hickers in and
workers, by running in contact with each other, or
tlmsir equivalent, for the purpose of working the fibre
before it enters on to the main cylinder, in the manner
specified and for the purposes sef forth.
DESIGNS.

	SrovusN. S. Vedder of Troy N. Y., assignor to
North, Chase &#38; North, ofPhiladelphia, pa.
	STovEsThomas Barry, of New York City.

Printing from Veneers.

	A process of Veneering by transfer is men-
tionod with approval in the French journals.
The sheet of veneer or inlaying to be copied
is to be exposed for a few minutes to the va-
por of hydrochloric acid. This novel  plate
is then laid upon calico or paper, end
an impression struck off with a printing-press.
Heat is to be applied immediately after the
sheet is printed, svhen a perfect impression of
all the marks, figures, and convoluted lines of
the veneer is instantaneously produced. This
process, it is affirmed, may he repeated for
an almost indefinite number of times. The
designs thus produced all exhibit a general
wood-like tint, most natural when oak, wnl-
nut, maple, and the light colored woods have
been employed.</PB>
<PB REF="IMG00007" SEQ="0007" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="3">



~cicnfif~c ~~mctican+
[For tbe Scientific American.)
Operating the Cutters of Reaping and
Mowing Machines.
One of the greatest defects of reaping and
mowing machines, practically considered, con-
sists in the present mode of operating the cut-
ters. It being necessary that the cutters
should have great speed in order to do good
work, it becomes necessary to use, as is the
case in most machines, a series of spur or cog
gearing. The objections to this mode of oper-
ating the sickle are various. One of these,
and perhaps the greatest, is the constant lia-
bility of the cogs to break, which is a far
more serious matter than a person at first
might suppose. To illustrate this, let it be
supposed that a farmer hires his binders,
rakers, &#38; c., and all being ready, the weather
fine, all hands go to work, but before the ma-
chine has cut a half dozen times across the
field, snap goes two or three cogs. Now, to
get the machine in working condition again is
no easy matter, for perhaps the nearest shop
may be two or three miles distant, and hours,
under the most favorable circumstances, must
elapse before the machine can take its place
in the field again; during all which time the
hands are comparatively idle, although at
the same expense to the farmer as though at
work. There is also an objection to gearing
on account of the great noise which it makes
when driven at the high speed necessary in
reaping and mowing machines. To remedy
the above objections, I dispense with cog gear-
ing entirely, while at the same time I am able
to use a small driving wheel, and yet get the
requisite spced. The plan consists in placing
on the main slsaft, and close to and on each
side of the main wheel, a cam wheel. I then
attach two treadles, one on each side of the
main wheel, to the rear portion of the frame,
the front ends of the treadles projecting in
front of the main wheel, while friction rolls
attached to the treadles near their middle rest
on the cam wheels. I now attach a chain or
rope to the front end of one of the treadles,
pass it down and once around the short crank
shaft which operates the cutter bar or sickle,
then up and make it fast to the front end of
the other treadle. Now, as the machine
moves along, a rapid reverse rotary motion
will be given to the shaft, and a reciprocating
motion to the cutters.
	This is undoubtedly the most simple, easiest
and least liable to get out of order, where
great speed is desired, of any mode now in
use. If any one doubts this, a simple experi-
ment will convince them of the fact. To
make the treadles work more even and easy,
if desired, the chain or rope may be attached
to a stiff spring, fastened to the upper side of
the treadles. It is not necessary that the
chain or strap should be continuous, as the
treadles may be attached to different straps or
chains, so that as one is wound up the other
will be unwound. A clutch may be used on
the short shaft to throw the sickle out of work.
INvENToR.
	[The above strikes us as being an excellent
improvement. Farmers will be interested in
its practical successED. Sec. AM.

Do Alkalies Injure the Teethe
	MEssRs. EDITORSThe item which you
publish in the ScIENTIFIc AMERICAN of the
29th nit., in reference to the action of alkalies
upon the teeth, and in which you state that
some of the dentists at the late dental con-
vention iss Boston asserted that the main
cause of defective teeth was the use of salem-
tus and cream of tartar in the manufacture of
bread, conveys a wrong impression of the
facts in the case, and as it involves a very
important question, deserves to be set aright.
	The subject under discussion was the
best means of securing a lsealthy denture,~
when a person in the convention, who has, for
many years past, been recognized by the den-
tal profession as a monomaniac on alkalies,
asked leave to read a paper on topics connect-
ed with the question. Liberty being granted,
the person produced a long article, cut from
some newspaper, and proceeded to read the
same. It was not well received by the con-
vention. It was looked upon as discourteous,
that a scientific body of men meeting to listen
to original thoughts, should have forced upon
them an ill-prepared and unscientific news-
paper article of two or three columns in
length.
	The object of the article in question evi-
dently was to bolster up the ancient and ex-
ploded theory that alkalies, as used in the
process of bread-making, injure the teeth.
There was no argument to sustain this posi-
tion, but simply quotations from the writings
of Harriet Beecher Stowe, and others of like
scieatiflc attainments, tending to show that an
excess of alkali in food had in some boarding-
houses occasioned disease, not of the teeth,
but of the body. The author of the paper had
also destroyed teeth by soaking them in a
saturated solution of saleratus for fourteen
days.	-
	With the reading of the newspaper article,
the argument in support of the ruinous effects
of alkalies dropped. Some forty members of
the convention, many of whom are in posses~
sion of an enviable and almost world-wide
reputation as scientific men, spoke upon the
subject, and not a voice was heard in favor of
the alkaline theory. Professor Chapin A.
Harris, of the Baltimore Dental College, op-
posed the theory with much energy, stating
that the teeth being made up largely of phos-
phate of lime, possessed no affinity for alkalies,
which could act, even in their most concen-
trated form, only upon the cementum or ani-
mal matter of the exposed bone of the tooth,
leaving the dense covering of enamel very
slightly disorganized, except by the action of
a positively caustic alkali, and even this act-
ing with feebleness. Dr. Fuller, of Ports-
mouth, N. H., contended that the human
teeth are very rarely if ever exposed to the
action of alkalies. The saleratus or soda
used in bread is intended to unite with the
acetic acid generated by decomposition, or,
where cream of tartar is also added, the re-
lease of carbonic acid gas, which renders the
bread cellular and porous, is effected; in either
case the acid is neutralized by the alkali, and
a minute quantity of the slightly laxative sub-
stance known as Rochelle salt only remains.
	Upon one point the intelligent members of
the profession seemed united  that acid,
whether generated by the decomposition of
particles of food in contact with the teeth,
or taken into the mouth in the form of ascetic
acid, as vinegar, malic acid or the juice of
apples, citric acid or lemon juiceor whether
occasioned by an acidulated condition of the
bodyin whatever form, acid is the great de-
stroying agent, the great decomposer of the
enamel and bony structure; and every years
investigation adds its accumulating evidence
in support of a theory which chemistry and
intelligent observation have placed upon a re-
liable foundation. Cleanliness especially, and
the use of moderately alkaline washes, when
indicated by the proper tests, may be consid-
ered as the best means of guarding against
decayed (or what is the more correct term,
dissolved) teeth.	DENTIST.

-c 
l~aw Gssmmers.
	MEsSRs. EDITORsIn your issue of August
8th, Mr. I. S. Westbrook, of Georgia, asks for
information as to where the best circular saw
gummer can be obtained. We are aware that
this is a question frequently asked by owners
of circular saw mills, and one, we believe,
never satisfactorily answered, until Mr. Dole
demonstrated to us that his improvement
could be successfully used on the largest class
of circular saws. We have purchased one of
these gummers, made by Messrs. Dole, Silver
&#38; Flech, Salem, Columbiana Co., 0.; and we
would cheerfully recommend Mr. Westbrook
and others, who are similarly situated, to pro-
cure one, as we believe them to he admirably
adapted for use on circular saws.
	E.	J. PRUNER &#38; Co.
Tyrone City, Blair Co., Pa., Sept., 1857.
	[This invention was illustrated on page 140,
last volume, ScIENTIFIc AMERIcAN, and we
are glad to hear so good a report of the prac-
tical success of the machineEDS.
Patent Eztenalons..~xlsmanagement in the
Notices.
	Considerable anxiety is just now manifested
among many patentees to procure renewals of
their patents which are about to expire. This
desire is evidenced in the annexed list of peti-
tions now before the Patent Office
	Isnproslesnent in Skips Blocks.J. D. Russell
&#38; S. Waterman, of New York. This patent
was originally granted on the 31st of January,
1844. The case is to be heard on Monday,
the 11th. of January next.
Tppe Casting Maclsine...David Bruce, Jr.,
of Brooklyn, L. I. Granted November 6,
1844. The hearing of this case is set down
for the 26th of October.
	Straw Cutters.H. M. Smith, of Richmond,
Va. This patent was originally issued on the
20th of February, 1844. The day of hearing
is set down for thp8th of January next.
	Railroad Car ~prings.James Mihiholland,
of Reading, Pa. As this patent expires on
September 23, the case is to be heard on the
21st. Doubtless it is a valuable improvement,
as otherwise Mr. Milihollaud would not ask
for an extension of the patent.
	Carriage Rrakes.David H. Woodward, of
Pennsylvania. This patent will expire on the
4th of December. The day of hearing is set
down for the 23d of November next.
	It should be borne in mind that persons de-
siring to oppose these extensions are required
to file their objections in the Patent Office at
least twenty days before the day of hearing.
	We have now a bone to pick with the
late Secretary of the Interior, on the above
subject. It will be remembered by many of
the readers of the ScIENTIFIc AMERICAN that
for some months during the last Administra-
tion, notices of petitions for extension were
officially published in our columns. Soon
after the appointment of Judge Mason to the
office of Commissioner of Patents, one of the
members of our firm, being then in Washing-
ton, waited upon the Commissioner, and ex-
plained to him the absurdity of publishing
such notices in exclusively political journals
having a mere local circulation. The justice
of our position was at once acknowledged;
and, with that desire always shown by Judge
Mason to render the Patent Office manage-
ment unexceptionable in its bearings upon the
interests to be affected through its agency, he
ordered the notices to be regularly sent
for publication in the SCIENTIFIC AMERICAN,
where they attracted the attention of parties
likely to become interested in opposing
such extensions. Not long afterwards
there was in process of hatching another
scheme, on the part of the Secretary of the
Interior, to get a few more of the noble apart-
ments designed to accommodate the future ex-
pansion of the Patent Department. We op-
posed this scheme in round terms, as we felt
bound to do by every sense of right; and, as
a natural consequence, the official list of
notices intended for publication in our journal
was stopped by the edict of the Secretary.
	We cared very little for these noticesin
fact, they were something of a burden upon
our space; but we thought it would look quite
as well for all concerned to consult the proper
interests in managing such matters. It is a
pitynay, it is a shamethat the federal
government cannot be made to overlook party
claims in matters so clearly above and beyond
the reach of party influences. The above
specified five cases were accidentally discover-
ed in the columns of an obscure print pub-
lished in this city, otherwise our readers might
have waited till August, 1858, for the appear-
ance of the Commissioners Report, in order to
be informed that extensions of such and such
patents had been solicited and granted. This
dim and tardy system is all wrong, and ought
to be remedied.

Apparatus for Navigating the Air.
	In rambling through the various avenues of
speculative and practical science in search of
novelties, we sometimes stumble upon curious
customers; and with a desire to strike chords
which will send their vibrations into every de-
partment where genius finds lodgment, we in-
troduce to our readers, from the London En-
gineer, a description of the nrial chariot of
Viscount Carlingford, of Kilkenny, Ireland,
whose invention has recently received the
Great Seal of the British Patent Office, which,
by the way, is as large as a good sized turnip,
and is a relic of the barbarous ages
	The ~rial chariot is made somethincr In
the shape of a boat, extremely light, with ens7
wheel in front and two behind, having two
wings, slightly omoave, fixed to its sides, and
sustained by laths, of a half hollow form,
pressing against them, and communicating
their pressure through the body of the chariot
from one wing to the other, and supported by
cords, whose force, acting upon two hoops,
nearly of an oval shape, hold the wings firmly
in their position, using a force that cannot be
less than ten tuns, on the principle of corded
musical instruments. The cerial chariot is
provided with a tail that can be raised or
lowered at pleasure, for the purpose of giving
an elevating or declining position, and worked
by a cord that communicates with the interior
of the chariot, which is drawn forward by an
wrial screw, of the perfect form of the screw
propeller, which screws into the air at an ele-
vation of 45 degrees, similar to the birds
wing, and is turned by means of a winch act-
ing on three multiplying wheels. The wings
of the chariot are covered with a network of
a lengthened square shape, which produces
the effect of birds feathers when the chariot
floats on the air, covered with silk, at which
time may be seen its impression with the
points forward and the same backwards, by
which no pocket, as it were, can be formed by
the pressure of the silk on the air. The upper
part is finished in the same manner, and both
sides of the wings are covered with varnish.
The body of the chariot, the wings, and all of
it in general, is made of very light wood, with
few exceptions, weighing in all from four to
six stone, and covering a space from twenty-
five to thirty feet square, or according to the
weight it is intended to carry. It can also be
constructed and considerably increased in size
to carry very superior weights, yet the wings
will not require to be increased in the same
proportion; as, for instance, we see the eagle
weighing eighty pounds and upwards while
the rook weighs one pound, yet the eagle has
only four times the floating surface of the
rook. There is also a rudder to the serial
chariot that has something the appearance of
a small sail, but, contrary to the rudder; it is
worked at its distant extremity by a cord that
communicates into the chariot.
	We shall be happy to see the Viscount,
whenever he may decide to li0ht upon us in
his serial car, and we hope he will not forget
to bring along with him a few specin~ens of
the Kilkenny cats.

Drying Sized Paper.
	L.	C. Stuart has recently taken out an Eng-
lish Patent for an improvement in the above
process, which consists in passing the sized
paper over and between a series of oblong
cylinders, placed one above the other, and
having their surfaces perforated with small
holes, through which currents of graduated
heated air are forced, which escape and come
in contact with both sides of the paper after
leaving the sizing vat Tise series of cylin-
ders and the paper between them are exposed
to the open air, so that the vapor may be free
to escape, and not run with the paper to be
again absorbed by them.
	The novelty of this improvement consists
solely in the perforated cylinders, as it is com-
mon in this country to employ steam-heated
rollers for the same purpose.

Artificial Marble.
	M. Felix Abate, of Naples, recently com-
municated to the French Academy of Sciences,
a new system of moulding which gives to
plaster the hardness and durability of marble.
He proposes to employ this substance for all
ornamental purposes where marble or stone
has been previously used ; and from calcula-
tions which he has made, he is of opinion that ~
It will cost only one-fifth of the best cut stone.</PB>
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~cicntifit ~nieticau+
~etn ~hdwntirni~+
Patent Slelgh.Collecting Ageists.

	A correspondent writing from western Penn-
sylvania, informs us that an agent is travel-
ing through that region, endeavoring to
collect damages for the infringement of a pat-
ent for placing the dash-board on the outside
of the rave of sleighs, and inquires of us if
any such patent has ever been granted. For
the benefit of all concerned, we would state
that Moses Miller obtained a patent in 1846
for an improvement in sleighs, the nature of
which is fully exhibited in the claim here an-
nexed
	What I claim, is the manner of combin-
ing the dash-board with the raves or frame-
work of the sleigh; the dash-hoard being
affixed on the outside of the raves, thereby
admitting of its being widened out so as
to constitute wings, whilst under the pecu-
liar arrangement set forth it may be discon-
nected for the purpose of repair, and replaced
at pleasure. To this manner of combining
the dash-board with the raves I limit my
claim.

Impreved Reas,er and Mewer.

	The single engraving here presented ex-
hibits very clearly the harvesting machine in-
vented by Mr. B. F. Ray, of Baltimore, Md.,
and for which Letters Patent were granted
February 5, 1856. Foreign patents for this
inventionthe English dated February 18th,
and the French April 3rd, of the present year
have also been secured through our Agency.
A is the stout driving wheel, which supports
a large portion of the weight, and, as is com-
mon in all harvesters, by its revolution works
the cutter bar, B. These features, as also the
light supporting wheel, E, on the opposite side of
the platform, D, the shoes, F and G, the sent,
H, for the raker, and the stout frame, I, stir-
rounding the driving wheel, are common to
most machines for this purpose. The chief
merits peculiar to this invention lie in the
means by which the motion is communicated
from A to B, and in the means by which the
interior of A is protected from the presence of
dirt, straw, and the like. A is mounted on a
short fixed axle, one extremity of which is
seen at J. A broad light plate, K, is provided
which is supported partly upon J, and partly
by brackets fixed for the purpose on I; and
as this plate covers nearly the whole of the
wheel within the rim, it effectually protects it
from any injury. In the engraving it is rep-
resented as open near the top, a construction
which is not objectionable, as the danger of
injury from substances falling in at so great
an elevation is very slight; but the only sseces-
sary opening in the plate is to allow the taking
off of the reciprocating motion, the means for
which we will now describe. A deep and
broad continuous groove, L, curved as repre-
senteci, is formed within the wheel, and ex-
tending quite around it. The stout casting,
M, which is fixed on the frame, I, supports a
stout slide, N, on the opposite sides of which
are projecting pins. These pins carry anti-
friction rollersthe one on this side being
plainly represented. The stud and roller on
the opposite side of N, reaches through a suita-
ble opening in K, (not represented) and stands
in the groove, L, so that as the driving wheel,
A, revolves by its adhesion to the earth, the
slide, N, is rapidly reciprocated forward and
backward; the roller seen on this side simply
serving, by its contact with the under surface
of M, to defend it from any injurious twisting
strain. P is a short upright shaft, with two
arms, R and S, extending at right angles
each to the other. R extends toward the
driving wheel, and connects, either directly or
through the intervention of a short link, to the
hinder extremity of N. S extends forward,
and connects to the cutter bar, so that the
latter is thus reciprocated without the inter-
vention of any gearing or complex devices for
the purpose. The only delicate parts, if such
they may be called, in the train which con-
veys motion to the cutter bar, are the shaft,
P, and arms, R and 8, which together consti- G, which precedes it in passing Into the grain. 1 ride over Inequalities In the 
earth,, and the
tute in effect a bell crank lever, and are ef- The tongue, T, of the machine, Is fitted in j whole is well balanced and adjusted to 
reduce
fectually protected from injury by the shoe, the usual manner, to allow the machine to I the side draught, eta. For traveling, when 
it

RAYS REAPER AND MOWER.

is not desired to cut, the pin, V, which con- without conveying any corresponding motion mowing machines yet introduced.
nects N to R, may be removed, and in this to the cutters. We consider this, in every im- For further information address John ~.
condition the slide, N, reciprocates alone, portant respect, one of the best reaping and 1 Tough, 13 Exchange Place, Baltimore, Md.
WILLSONS SAWING MACHINE.
	This Is one of the many devices brought
forward te facilitate the labor of sawing, by
connecting the saw to a crank worked either
by hand or by power. Its simplicity and ob-
vious freedom from the difficulties attending
many other plans for this purpose recommend
it especially to attention. The saw is mount-
ed in an extremely simple frame, which is
hinged at one end to the crank shaft. The
saw is held between two levers mounted in
this frame, and reciprocated by a simple con-
necting rod extending to the crank pin. The
frame is, in fact, merely two bent pieces of
wood or metal, and the saw and levers, when
at mid-stroke (the position represented in the
drawing) resemble an ordinary wood saw.
The machine has been put to practical use on
a large scale, driven by power, and is said to
be very convenient and effective.
	Fig. 1 is a perspective view of the machine
as constructed for use on a amall scale, and
Fig. 2 is an outline of the mann&#38; r by which
the wood is confined in the buck, K K, and
prevented from moving or rolling under the
action of the saw.
	A is the wood to he sawed, piled in between
uprights, K, and held down by a binder, L.
B is the saw, and C the crank which gives it
motion. D is a hand-crank connected to the
same shaft, to provide for working the saw by
hand. E is a balance wheel to steady the
motion, and F a connecting rod which com-
municates the motion of the crank, C, to the
saw, B. G G represents the two parts of the
frame referred to, and H I the reciprocating
beams which support the saw. J is a tie or
straining rod, by which the saw is stretched,
and which may be lengthened or shortened by
any of the ordinary means. M is a rack to
aid in confining the binder, which holds the
wood firmly in place. N is a crank which
may be fitted at pleasure on a shaft geared to
the cranked shaft before described. When it
is employed, the upper hand crank, D, must
be removed. Either crank, D or N, therefore,
may be employed to give motion to the saw,
according to the velocity with which it is de-
sired to vibrate the saw, or according to the
strength of the men employed.
	The weight of the frame and attachments
holds the saw to its work, but should it be
desired either to increase or lessen this force,
the frame may be partially supported or urged
down by a cord and chain attached. The
crank, D, is, of course, replaced by a pulley
to receive a belt, when it is desired to drive
the machine by steam or horse power.
	It is obvious that this device possesses
several advantages over many which have
been brought forward for the purpose for
which it is intended. One of these is its sim-
plicity, and another is the fact that the saw is
efficiently strained, and that therefore a thin
saw may be made to serve, and thus, by di-
minishing the amount of wood removed at a
cut, cause it to require less power.
	The patentee affirms that a power saw, eight
feet long, thus mounted, and driven at the
rate of 600 strokes per minute, has sawed
half a cord of wood in five minutes and twenty
seconds.
	The inventor of this arrangement is II. F.
Willson, of Elyria, Ohio. It was patented
June 30, 1857. For further information, ad-
dress Messrs. Willson &#38; West, Elyria, Loraine
county, Ohio, who are constructing the ma-
chines, and are prepared to receive orders for
them.

Fire-place Shutters.

	It is stated that in some of the first class
houses recently erected in England, fire-place
shutters are provided, which, when partly
down, act as powerful blowers, and when
wholly drawn down, so as to touch the hearth-
stone, entirely close up the fire-place, and
rapidly put an end to the combustion of the
fuel in the grate, or that of the soot in the
chimney, should the latter accidentally take
fire.Exchange.

	[This is a very old affair. It ranks among
the oldest and most expensive inventions
known for the purpos~
4</PB>
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~cicntifh~ ~merican+
c~ titnLific ~ntctican+

Birthday of the ~cientlfic American.

	We greet our friends with gladness at this
time, for it is our birthday anniversary. The
ScIENTIFIC AMERICAN is twelve years old, and
now begins its thirteenth year. This seems
but a small period of time; but in its scientific
achievements it equals, if it does not exceed
the preceding half century.
	Let us look hack a little, and note a few of
the prominent steps in progress and discovery
which have been chronicled since our journal
entered into existence.
	The number of new inventions patented in
this country during the past twelve years is
about 15,500. The total number of patents
issued during the preceding seventy-five years
was 14,500. This is a deeply interesting
fact, as it shows how ideas beget ideasbow
one invention is the parent of another. It
substantiates the oft-expressed opinion that
mind has only just begun to exercise its con-
trol over matter, and leads to the irresistible
conclusion that far more wonderful things are
yet to be revealed by the workings of human
ingenuity than any that have hitherto been
produced.
	The Electric Telegraph, as a practical in-
vention, was only a year old when the SCIEN-
TIFIC AMER[CAN started in life. The first
forty-four sniles of telegraph had just been put
in operation. There are now in operation and
under construction throughout the world
about eighty tlsousaed miles.
	Twelve years ago, the people of different
continents were, in a great measure, isolated
from each other. The pathless waters cut
them off, as mankind then believed, from all
communication, save by the slow and dangerous
process of navigation. But now, on wings of
lightning, defiant of wind or wave, messages
of peace and good-will glide through the
world. It is not probable that a submarine
telegraph cable could have been successfully
constructed twelve years ago, for it is only
since then that the wonderful gum, Gutta
Percha, has been made known and utilized.
As an electrical insulator, gutta percha stands
almost next to glass.
	Twelve years ago, the artists pencil, slow
and distorted, was almost the only means
known whereby natural objects were capable
of being reproduced. But drawing lessons
have been taught to the Sun, and now he
gives us any picture we may desire, iss an in-
stout. Nor is he particular as to the substance
upon which he paints the object; metal, glass,
canvas, leather and wood, all are alike avail-
able to him.
	In chemistry, what wonders have been de-
veloped within twelve years! Oil made from
coal has become a common article of com-
merce. The fishes that inhabit the great deep
no longer constitute the chief sources of our
oleaginous products. The touchstone which
actually converts base metals into gold and
silver, has not, it is true, been discovered, but
a new metal, wonderful and precious in its
eharacter, has been produced from common
clay.
	The shrieks of patients, writhing under the
surgeons knife, are now no longer heard.
Somniferous chloroform soothes the nerves,
and brings deep sleep upon its subjects.
And thus we might proceed to a far greater
length in the enumeration of the prominent
discoveries of the past twelve years; but time
and space forbid.
	Great, however, as has been the progress
during the period named, somehow, it does
not seem to us that the past year has produced
its proper share of important novelties. The
Atlantic Telegraph Cable looms up as the
most striking enterprise of the day. But
at present we can only glory in the uncommon
length of its wires. The year, however, has
	been more fruitful in new inventions, so far
as number is concerned, than any preceding
o~ twelve months. Yet among these inventions
~ do we find as many of a strikingly original
	character as might be expected? We think
not. It seems to us that inventors and think-
ing men have confined the workings of their
genius too much to the aiteration and adapt~
tion of old things. Now while we would not
ignore, or attempt to depreciate the value of
these labors, and their results upon our in-
dustry, we would urge them to still higher at-
tainments. In the year which is now opening
before them, let each try, if possible, to origin-
ate something which shall be wholly new, not
neglecting, of course, the apparently less im-
portant subjects. Progress  is the watch-
word.
	Our readers will notice that the SCIENTIFIC
AMERICAN is printed upon new type, and is
improved in other respects. With the new
year we have  turned over a new leaf. We
have determined to make our paper as much
more interesting and useful than ever as it is
possible. For this purpose we invite assist-
ance from all quarters. We shall be happy to
receive communications for publication upon
all subjects connected with science and art.
We shall, of course, exercise proper discrimi-
nation, and reject whatever we deem unsuit-
able to instruct and interest our readers.
Thankful for the kind favor with which our
efforts in past years have been seconded, we
invite the co-operation of our friends through-
out the new year which we now inaugurate.

Contradictions and Curiosities in Science.
The curiosities and contradictions of science,
while they go to show the eternal fitness of
things, also prove that we live in a world of
paradoxes, and that existence itself is a whirl
of contradictions. Who would suppose, for
instance, that waterwhich everybody knows
extinguishes firemay become fuel to a
flame, so that the coming man who is to
set the Hudson river on fire, may not be
far off. With the assistance of water and
fire, elements which have befriended the ma-
gicians of every age, contradictory wondcrs of
a marvelous character may be exhibited, and
even the hitherto secret art of handling red-
hot iron and other metals, and of walking
through a fiery furnace may be revealed.
	If we take some mystical looking gray
globules of potassium, and sprinkle thereupon
water, that fluid will instantly appear to
ignite; the potassium has so inordinate a de-
sire for oxygen, on the principle of affinities or
attraction, that the moment they come in con-
tact, the oxygen is abstracted, and hydrogen
an inflammable gasis set on fire.
	Again, if we take a platina ladle and hold
it over a furnace until it becomes of a bright
red heat, and then project a jet of cold water
into its bowl, we shall find that the water will
remain quiescent, and give no sign of ebulli-
tionnot so much as a single fizz ; but the
moment the ladle begins to cool, the water will
boil up and rapidly evaporate.
	So, also, if a mass of metal, heated to white-
ness, be plunged into a vessel of cold water,
the surrounding fluid will remain compara-
tively tranquil as long as the glowing white
heat endures; but the moment there is a
sufficient fall in the temperature of the metal
the water will boil briskly.
	If water be poured upon an iron sieve, the
wires of which are red hot, it will not run
through; but on the sieve cooling, it will run
through rapidly.
	The above contradictory effects are easily
accounted for. The repelling power of intense
heat keeps the water from immediate contact
with the heated metal, and the particles of
water collectively retain their globular form;
but when the metal vessel cools, the repulsive
power diminishes, and the water coming into
closer contact with the heated surface, its par-
ticles can no longer retain their globular form,
and eventually expand into a state of vapor.
This globular condition of the particles of
water will account for many very important
phenomena; perhaps it is best exhibited in
the dew-drop; and so long as these globules
retain their form, water will retain its fluid
properties. An agglomeration of these glo-
bules will carry with them, under certain cir-
cumstances, so much force that it is hardly a
contradiction to call water itself a solid.
	The chemical action of certain poisons (the
most powerful of all agents) upon the human
frame has plunged the Faculty into a maze of
paradoxes; indeed, there is actually a system
of medicine (advancing in reputation) which
is founded on the curious principle. A
famous Saxon was the founder of it; and,
curious enough, medical men (who are noto-
rious for entertaining contrary notions, for
doctors will differ,) are still speculating
among themselves whether he was a very great
quack or a very great philosopher. It is not
our purpose to attempt to decide this appa-
rently complmt question; but we can garner
up from his experience some curious contradic-
tions, which help us still further into the mys-
teries of chemical science. While engaged in
translating an article upon Bark, from Cul-
lens famous Materia Medica, he experiment-
ally tasted some of this medicine, which bad
long been celebrated as a cure for the ague,
and not long afterwards he began to experi-
ence agueish symptoms! This led him to the
inference that medicines which give rise to the
symptoms of a disease are those which will
specifically cure it; and, curious as it may
seem, several subsequent experiments have
confirmed this theory. Jenners discovery of
vaccination for the small-poxthe method
usually adopted in the treatment of frost-bitten
limbsthe administration of stimulants and
opiates to persons whose constitutions have
become enervated, whose limbs totter, and
whose minds have sunk into a state of low
muttering delirium or raving madness from
the effects of strong drink, are only a few of
the examples which might be eliminated to
show up the paradoxes that everywhere crowd
upon us.
	Thus we live in a world of apparent con-
tradictions and curiosities; they abound in
every department of science, and beset
us even in the sanctuary of domestic
life. The discoveries of science have ex-
plained and reconciled some of them; but
many still baffle our most strenuous mental
exertions, and remain involved in mystery.

The ~omunissioner of Patents and the Patent
Office.
	We understand that the President has de-
cided upon a suitable person to fill the office
of Commissioner of Patents; but up to the
time of our going to press, the name of the
appointee had not been made public. The of-
fice was tendered to Joseph Holt, Esq., of
Kentucky, but he promptly declined it. Pro-
bably he was not tempted by the miserable
salary of $3,000 to give up a practice worth
double that sum. The Middletown (Conn.)
Sentinel intimates that the Hon. John C.
Palmer, of Hartford, is most likely to be the
appointee, and goes on to say that he would
ably fill the office. This opinion is confirmed
to us by parties in this city who are acquaint-
ed with Mr. Palmer. It is our impression,
however, that he will not receive the appoint-
ment. At any rate, let us have a good man
for the place, and we care not from whence he
comes.
	We announced last week that Mr. Rhodes,
of Louisiana, had succeeded Dr. Breed as
Examiner in the Chemical Department. It
appears, now, that this was an error. Mr.
Galpin, it seems, fills this place; and Dr.
Thomas Antisell, of this city, succeeds the
late Mr. Tyssouski in the same department.
These Examiners are men of quality, and will
no doubt do all they can to render their ser-
vices acceptable to all.
	We are not the advocates of hasty changes
in the Patent Office; but we have long been
convinced that the departments most in need
of official substitutes have been least subject to
mutations in management; and if it would not
be considered impertinent, we should like to
inquire whether there have been, or are likely
to be, any changes in Classes X, XII and XIII,
comprising Land Conveyance, Civil Engineer-
ing, Mills and Presses? Also, whether the
Chief Examiner of those classes evinces an
amount of liberality equal to that which per-
sons doing business with those departments
have a right to expect, and which they most
generally receive, to a greater or less extent,
from other official heads? While denying all
desire to unnecessarily cast the shadow of a
doubt over the educational competency of the
gentleman having charge of the above classes,
a disinterested zeal to promote and protect the
best interests of inventors prompts us to ask,
is he perfectly adapted, in every sense of the
word, to perform the important and responsi-
ble duties of the situation which he at present
fills?
	We make these inquiries at the suggestion
of many inventors who, in confirmation of a
long-existing impression of our own, have in-
timated to us, from time to time, that it is
often pretty hard work to get even some deserv-
ing case successfully through the doors of the
divisions above alluded to. If there is a screw
loose here, it needs to be looked after; and
whoever succeeds to the vacant chair of Judgs
Mason will do a service to the inventive com-
munity and the public generally, by inquiring
into this matter. Examiners in the Patent
Office are public servants, and they are bound
to show a liberal discrimination in their ofli-
cial acts. No man deficient in this spirit of
liberality is qualified to fill a public station of
this character, and none such should enjoy it.
We invite the attention of the Secretary of
the Interior to the onsideration of this sub-
ject. ____________________
A Profitable Enterprise.
	Many of our readers have made large sniss
of money in various ways by small inve~t-
meats; some by patenting a novel invention,
and others, less ingenious, by purchasing rights
and re-selling the same. We have a sugges-
tion to make in regard to money-making, by
which, aside from any personal interest,
(which we admit is considerable,) we believe
any person who will properly exert himself
can make a very handsome sum, and one
which need in no way interfere with his regu-
lar business. We have evidence that some of
our friends have taken our previous hint, and
are laboring to earn some of the liberal prizes
which we offer to those sending us clubs of sub-
scribers this fall ; and it is such men as these
who will be able next January to endorse our
assertion, that sometimes a little industry
is very liberally rewarded.
	This is the first number of a new volume,
and we trust many of our patrons and friends
will show it to their neighbors and acquain-
tances, and ask them to subscribe, even if
they have no wish to get up a club and com-
pete for a prize. It will be commendable in
those who thus exert themselves to extend the
circulation of the SCIENTIFIC AMERICAN; and
we are sure that all who are induced to do so
will, at the end of the volume, thank the per-
son who solicited them to make the invest-
ment. But we would call special attention to
the reward which is in store for such as make
an effort to get large lists of subscribers. Just
turn to the Prospectus on the last page of this
paper, and then see what an inducement is
offered for the fifteen largest lists of mail sub-
scribers that may be sent to our office before
the 1st of January next.
	Reader, seize this opportunity to make a
few hundred dollars; it is easily done. Send
to our office for a Prospectus, and go to work.

Our New Dress.
	The beautiful fonts of type upon which this
number of the SCIENTIFIC AMERICAN is
printed, are from the type foundry of Robert
Lindsay, No. 128 Fulton street. It speaks for
itself. The various mechanical engravings
and devices which embellish this weeks issue
were designed by Forbes &#38; Bond, and en-
graved by Richard Ten Eyck. The work of
these excellent artists scarcely needs our com-
mendation, as the columns of this journal for
some years past give convincing proof in their
favor.

	The London Gsristian Spectator says :As
a general rule, we believe American theologi-
cal writers to be better versed in modern
languages and more deeply read in ancient
literaturein other words, better and abler
scholarsthan the majority of theologica
writers in this country.
SW ~% ~r
5</PB>
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Feats of Fire-arms.

The Crimean war and the recent revolt in
East Indies have given an impetus, in a
si direction, to the inventive talent of a
	numher of ingenious men, hoth in the
United States and Europe; and this move-
~ment in military manufactures has resulted in
the issue of many patents (especially in this
country) for improvements in fire-arms, the
~jmajority being of a breech-loading character.
~	On the 17th ult. a Board of experienced
military officers was convened at West Point,
N. Y., for the purpose of testing the respective
advantages of various new breech-loading
rifles, with a view to ascertain which arm of
that description is best suited to the service of
the United States army. Through the cour-
tesy of an ingenious and gallant friend, an
officer in the Ordnance Department, we have
been favored with the following interesting
account of the experiments made before the
Board
	MEssRs. Enrroas :In compliance with
y our polite request that I should report the
esults of the breech-loading trials now going
on at West Point, N. Y., the following succinct
statement is submitted for the information of
the readers of your valuable journal
	About three years ago, Congress, desirous
of fosiering the growth of the manufacture of
arms in this country, or from some other mo-
tive, made an appropriation of something less
than a hundred thousand dollars for the pur-
chase of the best breech-loading arm that the
country produced. This was originally in-
tended for the henefit of a particular company,
bnt an amendmentviz., the word best
threw it open to all arms, and in such manner
as the Secretary of War might see fit. Thins
was given a strong incentive to mechanical
ingenuity. Now, our people, as von know,
have more of that quality, pro raw, than any
ther; and I heard an officer, who was
~tationed at the arsenal at Washington in the
years 185455, say that, on an average, there
came down there at that time, to be tried and
reported upon by the directions of the Colonel
of Ordnance, two new breech-loaders per
week. Secretary Davis had preliminary trials
before a Board of officers convened for that
purpose, in order to select the best of those
presented, and submit them to further trial in
the hands of the troops. Only four competi-
tors were admitted, viz.: Sharpes Co., Perry,
Green, and Symmes. Others were admtted
afterwards, who bad not submitted their arms
to the Board, making in all some eight or ten.
Each of these had an order for a limited num..
her, and they went to the field.
	Before the experimenting officers had report-
ed on the merits of the arms, the Administra-
tion changed, and with a new Secretary of
War came in new ideas. The present Secre-
tary brought officers from the field, and told
them to arraign and try all the breech-loading
world.
	The officers comprising the Board will he
recognized by any one familiar with their
register as being from the field. They are
as follows :Lieut. Col. Beale, Major H. Hill,
Capt. Thos. Duncan, Capt. lietis, Capt. Ben-
ton, and Lieut. Gibbon. This Board assem-
bled at West Point on the 17th ult., as per
orders, hut did not get to work before the
19th. The place chosen for the firing is
across a bend or inlet in the Hudson river. A
platform is erected and covered with canvas,
from which the guns are to be fired. The
rifles are not fired off-hand, hut by a person
sitting on a stool, resting the barrel of the
piece on a support, and also bending forward
and resting his right arm against a bench
from which the support of the barrel is raised.
Each gentleman exhibiting a gnn must
submit it to the following test, viz.: 20 rounds
at a target at 100 yards, 20 rounds at 300
yards, 20 rounds at 600 yards, 18 rounds to
judge of rapidity, and 100 rounds to judge of
durability. This is a severe test, but a good
one. The members of the Board do not scru-
ple to take hold of the guns and carry on the
firing themselves, first having taken the pre-
caution of letting each inventsr expose himself
to any dangers from the same, for five or six
rounds. Thus they proceed, slowly, but quite
surely. Twenty-three guns are said to have
been presented. Some competitors have de-
clined or flunked, hut a majority have
stood up to the test. ~ These, in order of time,
are as follows
	1.	Howe.	7. Thirusides.
	2.	Gross.	5. Green.
	3.	SchenkL	9. Sharpes Ce:
	4.	Gibbs.	10. Colt.
	6.	Morse.	11. Jecelyn.
	5.	Merrill.

	Of these arms, Mr. Howes was an exceed-
ingly simple chamber gun, but did not shoot
accurately, as almost every chamber gun fails
in this respect. I now distinguish between
chamber-loading, where the cartridge is in-
serted backwards, or the powder first,~and
breech-loading, where it is inserted forward,
or the ball first. Mr. Gross arm is a cham-
ber gun, also, but Ijwas not present when it
was fired. Mr. Schenkls weapon is a modifi-
cation of the Prussian needle gun, with the
cap in the base of the ball. I understood that
it did not fire well. Mr. Gibbs arm (a breech-
loader) has the barrel movable, and closes
down and hack against the breech. It did
good shooting. Mr. Morses gun was a breech-
loader; he used a brass case and beautifully
swedged ball for his cartridge, and the cap or
explodent was fastened in the bottom of the
metal cartridge, so that a smart blow from
behind, made by the hammer, was the cause
of the explosion. The case was automatically
withdrawn, when it was necessary to insert
another cartridge. His shooting was moder-
ately accurate. Mr. Merrills weapon was a
faucet breech-loader. He used, I think, too
little powder, and his ball did not weigh
enough. He, also, did only moderately well.
General Burasides presented a beautiful cham-
ber gun. His cartridges, also, were encased
in thin brass covers. They were made to fit
both the chamber and barrel by a zone of lead
on the end of the brass next the bail. This
gun did good firing. It was subjected to a
wetting while loaded; after which It was not
used for two days; it was then fired perfectly
free. The cartridges, also, were submerged
for a day, and then fired. This gun presents
strong claims upon the service. Next came
the breech-loader of Col. Green, (not Greene,)
of Boston. He has named his weapon the
plug-ugly. It has the peculiarity of loading
forwardthe powder first and then then ball,
and lastly a thick felt wad. Thus the hall of
the preceding cartridge is propelled by the
cartridge that is fired. The lock is under-
neath, and the cap fires through the side of
the cartridge. It is a good rough little piece,
but did not throw its ball with great accuracy.
Then came the piece so well known as Sharpes.
It had the gas-choke in it, and was fired, by
the aid of the primer arrangement, eighteess
shots in fifty-fire secondsan unprecedented
rapidity; not but that any breech-loader could
do the same with proper arrangement for
primers. Let Americans think of this: Are
soldiers brought before an enemy for the pur-
pose of receiving or of giving balls? All we
want is what the Board are now seeking.
This gun, however, was not upin accu-
racy, having been beaten by Gibbs and equal-
ed by Burnsides. Then came Col. Colts
piece. This gun is well known. It is a
five-shooter, strong, and well made. It
fired the heaviest ball (530 grs.), and was the
most accurate of all the guns thus far tried
beating Gibbs, Sharpes and Burusides by
far. How much is to be deducted for extra
length of barrel (35 inches) and overweight
(14 lbs.), the Board are to judge. Its
rapidity of firing was not so great as was ex-
pected. The next was the Jocelyn gun. It
is a breech-loader, of very neat appearance,
but the connection between the cap and the
chamber is such as not always to communi-
cate fire to the cartridge. It shot unaccount-
ably wild, probably because the ball stripped.
	Next week I will give the remaining trials,
two of which promise to be very interesting. t
LUDWIGS MACHINE FOR FELLING TREES.
by one or more bolts to C, as represented. E
is a cross bar, extending rigidly across E
near its center, and E is a light iron attach-
ment on the top of E, to guide the roller, H,
which latter will be described below. F is a
carriage, so connected to the cross bar, E,
that it is free to slide endwise thereon. G is a
light rod, termed a radius bar, jointed at one
extremity to the fixed rod, D, and at the other
to the rod, I, which latter, passing through
thd carriage, F, is firmly fixed to the saw, J.
The office of G is to guide the motion of I. It
plays backwards and forwards as the saw is
moved, and is provided with the roller, H, to
diminish the friction against E and E, which
would otherwise he caused by its motion.
	K is a crank, and K a stout gear, which is
turned thereby. L is a smaller gear wheel,
the motion of which is steadied by a balance
wheel, as represented, and which turns with
some 4 or 3 times the regular velocity of K.
L is a crank on the same shaft, which gives,
by means of the connecting rod M, a recipro-
cating motion to the radius bar G, and thus
to the nearest extremity of the saw bar I.
This motion is not rectilinear, but curved,
according to the length of the radius bar G,
and this imparts a slight oscillating motion to
the saw, which aids in clearing the sawdust.
	This makes one of the simplest methods of
mounting a saw for this purpose, and one
which involves less friction than any other
with which we are acquainted. The saw is
urged up to its work by the tension of the cord
N, to which is suspended a weight P. This
cord is not attached directly to the saw bar I,
but to the carriage F, and there is a roller, as
represented in F, to diminish the friction
which would otherwise be experienced at that
point.
	This machine is adapted, by a very simple
change, to the cutting off of logs. For this
purpose it is necessary simply to bolt the long
bar E on the side, instead of the top, of C, and
to disconnect from the radius bar G, and make
the connections to the bar P, which serves in
its stead for vertical cutting. In such cutting
the cord N ~nd weight P are dispensed with,
and the weight of the parts are amply suffi-
cient to hold the saw teeth to the work.
	This machine is an improvement on the
machine formerly patented by Mr. L. for the
same purpose. It was patented on the 30th
of June last. For further particulars address
M. Ludwig, 35 London street, Boston.
Steam Cultivation In England.

	An experiment has recently been made in
Lincolashire, Eng., in steam plowing, with
Boydells traction engine, which appears, from
the published reports, to have given satisfac-
tion. Several varieties of plows were tried,
the peculiar construction of which we cannot
get at from the vague descriptions given of
diem; but it was proved that the traction en-
~Jno, with three double plows, plowed one
acre in seventy-three minutes, or about eight
acres in one day of ten hours, at a cost, in
labor and coals, of about $7 50, while the
work performed by six single plows, with
eighteen hoorses, in the same time, would he
only four acres and a half, and this at a cost
of about $12 50being three acres and a
half in quantity, and a little less than $5 in
favor of the steam work. The prime cost of
	the ennine with the plows complete, is esti-
The labor required in felling trees by the Ludwig, of Boston, a gentleman of considerable mated to be about the same as eighteen 
horses,

ax, in the ordinary manner, is considerably experience in adapting saws to this and analo- while upon the point of wear and tear, 
the for-
greater than would be required in severing gous uses. The power of the man or men is mer would be the most economical.
the trunk, under favorable circumstances, by applied to a crank or cranks on a suitable
an ordinary cross-cut saw; hut the unfavora- frame, and the saw is made capable of being	A Trap Vender and his Wares.
ble position of the work for operating a saw, worked thereby with a rapid motion, either in I. S. Clough, whose advertisement 
appears
goes far to counterbalance this advantage, and making a horizontal cut, such as is required in another column, is quite as much of 
a no-
to compel an adhesion to the old system of for cutting off a standing tree, or in vertical veRy in his way as the thousand and one
chopping. It is evident that the absolute cuts, such as are adapted to cut up the log traps which he is constantly offering for 
sale,
amount of power required to excavate a thin into suitable lengths after it has been felled, and it would do some of our country 
friends
kerf by a saw is far less than that to remove A is a broad foot, and B a stout upright, good to call upon him when in the city, and
two large wedge-shaped sections, as is required The latter is divided into two parts at the top, look over his effects. He has 
letters from the
in felling by the ax; the problem is to so as represented, and forms the hearings for the most eminent men of the day; notices from
mount the saw that it may be moved with shafts. C is a horizontal part or stick, all sorts of newspapers, for which he has a
facility, and that it may be operated by a mortised into B, and C is a leg or support strong predehiction; besides cockroach traps,
motion which is easy for the muscles. therefor. D is a light iron rod projecting rat traps, mice traps, fly traps, match safes,
	The engraving here presented shows a light nearly in a horizontal direction at right angles tooth-picks, furniture and stove 
polish, apple
and simple apparatus, invented by Matthew parers, apple and potato slicers, &#38; c.,
to C, and E is a long wooden arm, connected</PB>
<PB REF="IMG00011" SEQ="0011" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="7">




~ciewtitit ~nierican+	~itm11
Literary Notices.

TIlE EoLxcTro MAGAZINE o~ FoxInoN Liv~su.vuup, for
September, is received, with the usual freight of highly
interesting and valuable selections. The contents in-
clude a history ot the Christian Sabbath; a sketchfrom
Loomis Progress of Astronomy, re-selected from the
FVostmsnater Res~iew an excellent article entitled
rho Puazles of Geology; Irish Orators; King Sword
and King Pen, and various short articles. 144 pages
monthly.

is	EMInisoNs UNrrzu STATt5 MAGAZINE. for September,
a good number. It contains an ilhmtrated Life of
Washington. The publishers of Putnams Magazine,
having suspended, that serial will in future become
merged In the United States Magazine. Terms per an-
num, $71. J. M. Emerson &#38; Co., publishers, 371 Broad-
way.
	K.	G., of VaThe idea of employing electric currents
in tbe process of bleashing materials for paper-making,
would not, in our opinion, be of any practical value;
besides, the suggestion Is not new.
	A. K. K., of S. CYou Inquire how It bappens that	____________________________
so many Inventors arc constantly engaged in trying to
Invent an improved chum, washing machine, orpumpV	TERMS OF ADVERTISING-
The reason is perfectly obvious, and originates as much Twenty-five cents per line each insertion. We re
from one of the laws of trade as the manufacture of cot- spcctfully request that our patrons will snake their
ton cloth. Almost every family in our land has a direct advertisements as short as possible. Engravings cannot
interest in these machinestherefore Inventive genius be admitted into the advertising columns.

is more or less active In devising better plans and do- ~ All advertisements mu. t ho paid for before in-
vices to meet the general demand. Every family does sorting.
not want a carding machine or a smelting furnace, and
hence it is that less general attention is paid to the ~ a IMJ~ORTAINT TO INVENTORS.
J.	L., of WisWe thank you for informing us that
AMERICAN AND FOREIGN PATENT
rumor has been started In your vicinity to our prejudice -LI-SOLIClTORS.~Messrs. MUNN &#38; CO., Pro;rio-
as honorable Patent Agents. It has doubtless been put tors of the SCIENTIFIC AMERICAN, continue to procore
in usotion by some Irresponsible and unprincipled fel- patents for inventors in the United States and all for-
low wiso has not the capacity to lay a foundation for	eign countries on the most liberal terms. Our experi-
	ence is of twelve years standing, and our facilities are
himself. We have outlived such rumors by our profes-	unequaled by any other agency in the world. Tue
sional acts, and seldom, If ever, deign to take notice of	long experience we have had in preparing specificatiou.
	and drawings has rendered us perfectly conversant with
them. We are perfectly able to continue our business	the mode ofd oing business at the United States Patent
In defiance of such malicious reports.	Office, and with most of the inventions which have been
S.	S., of Ind. Suppose a person has a patent for a patented. Information concerning the patentability of
inventions is freely given, without charge, on sending a
wagon, one of the claims being on the bed, another on model or drawing and description to this office. Con-
a particular style of wheel, can the patentee sell rights sultatlon may be had with the firm, between nine and
for the wheel alone, without selling lisa rigist to the four oclock daily, at their principal office, 128 Fulton
street, New York: Our branch offices are corner of F
whole patentthat is, selling one or more claims of a and Seventh streets, Washington, D. C.; No. 66 Chan-
patent without the others ~ We answer that a patent cerv Lane, London; 29 Boulevard Saint Martin, Paris,
and 3 Rue Tlierreiennc, Brussels. Circulars of luforma-
cannot be obtained to cover under one issue two die tion conc~~sing the proper course to be sursiied in ob-
tinct featisres as set forth above. A patentee may set taming 5)atCIsts through our Agency tie requirements
a limit upon tlIe particular use of his invention, or such of the Patent Office, etc., may be had gratis upon appli-
cation to the principal office or either of the branclses.
separate portions of it as lie may have covered in Isis dommunications and remitlances should be addressed
claluss.	to	      MUNN &#38; CO.,
		No. 128 Fulton st., New York.
	S.	It., of ArkIt is said that if small pieces of cyanu- The annexed letter from the late Commissioner of
ret of potash of the size of a pea are put Into the holes Patessis we commend to the perusal of all persous in-
of ante. it will, by repeated application, entirely exter- terested in obtaining patents
Meseas. MLNN &#38; Co. I take pleasure in stating that
inmate them.	while I held the office of Commissioner ot Pateists,
 T. T., of N. Y.It Is considered unsafe to enter a	MOR5~ THAN oNE-FoussTn OF Ae.s. vss 55051NR55 OF TIIF.
sick room in a state of perspiration, as the moment you	GeFiOll cause tisrotigli your hands. I have no doubt that
become cool your pores will be likely to absorb. Do not tue Public confidence thus indicated has 1 en fully de-
served, as I have alss-ays observed, in all your futer-
aimproachi contagious diseases with an empty stonsach,	course wills tlse office, a marked degree of promptness,
	skil and fidelity to the interests of youi eusploycre.
nor sit between the sick and the fire, as the heat at-	  Yours, very truly, CIIAS. MASON.
tracts the vahior.	 August 14, le57.
 U. A. B., of N. Y.We consider Haswehls Pocket
                      a work in a compact forns	~IL! OIL! OIL !FOR RAILROADS. STEAM-
Cosnimanion the nearest to	~JlRS, and for suacisinery and burning. Peas-us
for practical work of any In print. The price is $1 25.	tusproved Machinery and Burninu~ Oil will save fifty
	It is published by the Harpers, this city.		per cent., and will not gum. This oil imoesesses qushi-
ties vitally essential for lubricating and buruine, and
S.	H. H., of DelYour idea of driving a water wheel found iii no oilier oil. It is offered to the siublic uhous

by the water raised by a pump driven by lisa wheel it the most rehiumble, thorough and practicaf ti-st. thor
self, is one that has suggested itself to many persons usost skillful engineers and usuachuinists hsronounce it
unacquainted with mechanical principles. If there eumluersor and chucaluer Ihi. n any oIlier, and time only oil
such thing as friction, and the fall effect due to thmuit is in all cases roliabi and will not ~uns. rhse
	was no		Scientific Ausserican, alter several tests, pronounced it
	a certain fall of a given quantity of water could be oh-	sihuerloj to any other they have ever mused for ma-
		elminery. For sale only by the inventor and manumfac.
	tamed practically, your apparatus when started as you	tusrer, F. S. PEASE, 61 Main 51., Buffalo, N. Y.
	imropose would continue in operation, but even tlsegu you	 N. B.Itehimible orders filled forany part of the United
	must have a fall for the whole quantity of watoriqual	 ales and Eurohus.
	to the bight the waler is to be raised. The thilug ~ ~	NIEW HAVEN MANIJFACTIJJIIN(; Co..
	tirely impracticable; it is, in fact, perpetual motion.	1~ Machinists tools, Iron Planers, Engine and hand
	 Marcus Prall, of North Adams, Mass., wishes to cor-	Latises, Drills, Bolt Cutters, Gear Cumtters, Chucks, &#38; c.,
respond with the owner of Edgeombe Patent Washies g on lmand and finhhulne. These tools are of superior
quality, anul are for saG low for cash or approved h)aPer.
Mmiclsine for the county of Lltchfield, Coun.	~or cuts giving full description and prices, address
	C.	C. II., of Michs The hughes telegraph does not New haven Manulactuiring Co., New Iluiven, Coun.
both send mind receive signals mit the same Inst ant of TN.~T1t UMENT.~.NEW CATALOGUE, THIRD
timue; html during thue iutervmsls in the touch of time signal i Edition, within 251) Ilhumetrustions of Matherinsatical,
keys at omme end of the line, signs usay lie returned ~n a Optical and Plslloeephmicah lustrumments, fumrnished gratis
and semi by mail, free. of charge, to all parts of the
	contrary direction frons the opposite end.		United Stabs.
L. I-i., of Olmlo.Yous had better address T. &#38; .1. N.	C. 1. AMsL1~t,- (formerly Ameler &#38; Wirz,)
	Aldrichm, of Hudson City, N. Y., If yous wishi to carry	Cimeetnut at., Philadehehia, Pa.
	out the principle of aunoke bumming to the very highest  -	_______________________
	W1S.~ DIIAWIN67 INSTRUMENTsA
perfection. We believe In snuskiug the tops of losv ~Y full stock of these celebrated instrusments alsvav
elmimuneys a trifle luir-er than Ilse base inside, but iii On hand. Catalogue gratis. C. P. AMSLER, (formerly
	-	~mnsher &#38; Wirz,) Phihadel plus, P
hui.elu stacks time stability of time construction overrules -                          
	tIme argumeimle iii fuivor of such form.		1)OlLTAIiLE srEA~I ENGINES.  S. C.
	 C. M Lee, of Sioux City, lowaWishus to puirchease	I hIlL LS, No. 12 PlatI street, N Y offers for sale
	  -	these Un
	either a new or a second-hand lathe, 3t-~ or 4 feet bug,	 - - - gines, whim Boihere, Pumi;s, healers, etc., all
		ceuisplete suitable for printers, carpenters, farmers,
uund 6 or inclines ~wlng, with slide rest, and arranged iIanters&#38; c. A 2i~ horse can tic seen in store; it occu-
fur cuttimig icrews.- lie is a gunsuelib. 555c5 us space 5 by I fest; weiptit 1,510 lbs.; price $241;
	C.	XV. C., of 111.There Is no description of your har- oilier sizes in proportion.
vester in the paper sent, frous which we can get at a Ti IRRISONS 30 INCh GRAIN MILLS
clear Idea of its comustrusetion. We prefer in sill cases, II. Latest PatentA suhuply constantly on hand.
when we notice an improvemncut, to acconspany it with Price $200. Address New I-haven Manufacturing Co.,
			New haven, Coun.
mm illuustratiems.
L.	II. C., of S. CVets c-ill procure iumsproved ma- ~~ENTS WANTED-..TO DISPOSE OF AN
chinery for niaking cracl.ers from Win. II. Evans, t7 fits. artich. lately ins ented. Sells readily; large pro-
Samehs with terms, &#38; c., sent by mail for 50
	Eldriuige street, this City,		cents, in coin or stamps or particulars ford cents.
XX	M IIAR~ Mayeville, 1)odge county, Wis.
Money received at the Scientific Ansericans Office on    - _________
account of Iatent Office business, lor the week ending TT iA0~~~DRY FOR SALE
	thousand dollars, one
	Saturday, Seplember 5, 1867 		thousamsd in cash, the balance in one or Iwo years, pay-
	XV.	H., of N. Y., $25; E. P. 5., of N. Y., $20; Ii w. able in work 5C the pusmehiniser prefer. hor forthmer in-
R., of Iowa, $30; A. I. C., of InC., $52; F. W., ef Tex formoatiomin adulmess ~ 1 RIDEII, Patlersonville, parish
- of Si-. Mais Is
$10; C. K. S., of Mass., $50; XV. B., of N. Y., $25; K. -
P., of Ill., $21; S. K. D., of Conn., $30; F. P., of N.	IINDSEV6 ROARY FORCE ANI) LIFT
Xl &#38; B., of sos z IJPUMI Tue hsest pump for railroads, engines,
	Y., $15; C. r., of N. .,$.h0, -.	 	wi-his anti cisterns. Warranted to raise water 100 feet
W., of N. J., $10; L. &#38; II., of N. Y., $10; Pu. 11. L., of liv hand. For drawings and prices address
	Pa., $25; 7. P. B., of Coun., $30; A. C. A., of Conn.,	JAMES M. EDNEY, General Agent,
	$15; L. A. B., of N. Y., $55; J. G., of Ga., $10; C. 0.	i6 Johmn street, New York.
	L., of Vt., $10; A. G., of Mass., $25; A. K. B., of Mass.,	ORGIIO SYRUP AND BRAND Y.SAM-
	$25; C. II. A., of N. Y., $29; XV. W. D.. of Cal., $150;	PLES may be seen at No. 11 Old slip. For sale,
G.	&#38; P., of Mich., $710; J. XV. It., of N. J., $10; D. B. Cane Mills, Distilleries, Sugar Pans and other appa-
matins.
hi., of Tex., $40; P. K. L., of Wis., $25; H. T. C., 01 JOIIN XV. REED. Machinist and Coppersmith,
Mass., $25; H. XV. S., of N. V., $25; XV. S. XV., of L. I.	No. 11 Old shii, New York.
$10; W. K. S., of La., $30; J. McA., of N. V., $05; J.  _________________
	flEPOT FOR PRATTS PATENT APPLE-
F. &#38; K. XV., of N. Y., $30; K. G. C.. of Pa., $25.	NJ SLICER aimd Parer, No. 195 Pearl street, New

	Specifications and drawings belonging to liarties with York. I. S. CLOUGH, Agent. Dealers orders prompt-
the following initials have been forwiurdesh to the Patent 15y executed. Cireulars sent by request, giving prices,
Office dimming Ilse week ending Saturday, Sept. 5, 1867: ___________________________________________________

	XV.	D., of N. V.; J. II. F., of Caha; G. T. J., of Ga.; 1~TELCH &#38; GRIFFITHS-ESTABLISHED
XV. H., of N. Y.: St. J. &#38; B., of N. Y.; II. T. G.,of ~V1 0Manufacturers of Improved Patent Ground
Mass.; XV. &#38; F., of Paris; J. F. &#38; K. XV., of N. Y.; N and Warranted Extra Fine Cast Steeh Saws, of the
various kinds now in use in the different sections of the
K.	B., of Mass.; C. 11. A., of N. Y.; A. G., of Mass.; S. United States and the Canadas, and consisting of the
P. C., of N. Y.; P. K. L., of XVis.; K. G. C., of Pa~ A- celebrated Circular Saw, Graduated Cross Cut and
C. A., of Cl.; A. J. C., of hod.; Z. XV., of N. J.; It. II Tenon, Gang, Mill, Pit, Segment, Billet and Felhoe
Saws, &#38; c., &#38; c. For sale at theirwarehsouse, No. 48 Coo-
L., of Pa.; J. P., of Mich.; J. G., of Miss.	gress street, Boston, Mass.
A NEW AND SCIENTIFIC INVENTION..-.
tent issued January 15, 1856. A circular relating to the
use of the instrument, embracing a general treatise of
alony of the spermatic organs, the result of wlsichin tends
to softoning the medullary substance of which the brain
is composed, may be had gratis, and will be sent to any
address by mail 1w their indicating desire to receive
it. All letters sh6uld be dimecled to Dr. J. CIIEKYIiII,
No. 1 Tremont Tutusple, Boston.


L NGINEERING.THE UNDERSIGNED IS
.124	prepared to furnish specifications, estimates, plans
in general or detail of steamships, sleamboats, propel-
lers, high and low pressure engines, boilers and ma-
chuinery of every description. Broker in steam yes ole,
machine ry boilers &#38; e. General Agent for Aslucrofts
Steam and Vacuiunn Gages; Allen &#38; Noves Metallic
Self-adjusting Conical Packing, Fabers Water Gage,
Sesvells Salinometers, Dudgeons Hydraulic Lifting
Press, Roeblings Patent XVime Rope for hoisling and
steering purposes, Machinery Oil of the neost approved
kind, etc.	CHARLRS XV. COPELAND,
	____	Consulting Engineer, 64 Broadway.

(1 ATALOGUE OF PATENTSNEW EDI-
~.. TIONShuowing the subject or title of every pa-
tent g ranted in this country prior to the present year,
and tIme number granted under each title. Also, tables
giving the whole nummber granted, and the number re-
spectively to the residents of each Stale and country.
Xery interesting and useful to the inventor and me-
eluuunhe. Price 25 cents. Address

J.	S. BROWN, Washington, D. C.

K7A~IIINtTs~ IRON WORKSMALLERY,

	RAIN~&#38; CO., and HIGHLAND lRON
WORKSSTANTON, MALLERY, RAINS &#38; CO of
Newburg, N. VAre extensively engaged in manu#ac-
turing all kinds of Steam Engines, Machinery and Gen-
eral Mill XVork. They are also partners of the firm of
STANTON, SNOW &#38; CO., Car Wheel Manufacturers
Newbumg, N. V., and are prepared to furnish Railroad
Cars and Car Wheels of superior construction. From
the cheapness of real estate and reasonable price of
labor, as well as their great facilities of transportation
by two railroads and the Hudson river, they are enabled
to fill orders at the lowest prices and on the most rea-
sonable terms.


MOULDER WANTEDONE ThAT FULLY
	understands green and dry sand moulding, and
Casting	the g up all the necessary fixtures for
	pmpe	most approved manner. Must be
well recousmended. Address Coomba, office of the
Scientific American, ~sew York City.


$ 1 flf~ AN EQUAL HALF INTEREST
	 5J5.P5J  in several new and valuable patents,
will be sold cheap to a competent and responsible per-
son, who will introduce them to the public. Address
Box 87, Post Office, Brooklyn, N. V.

~h1. D. BREED, LATE ASSISTANT AND
EY Acting Clinief Examiner in the U. S. Patent Office
isis esteblishined at Wasluinglon, B. C. a chemical labera
tom- for experiment and analysis, ~A order to test and
ius1emove processes of manufacture, and mechanical de-
vices employed in the eluemusical arts, and to procure
auth defemid patent rights. After many years devoted
to ehuemistry, (having studied in the Gerissan laborato-
rIse,) Dr. Breed feels confident in offering his services
as a htrsctical chemist to inventors and others interesteul
in Ihe chemical arts and manufactures.


IRON PLANER FOR SALE.A SECOND-
I hAND Iron Planing Maclime; has been run but a
ehinort time; will plane ten feet lone, tlmmee feet wide and
three feet highs. Coot 5-605 will be sold for $550 cash.
Address GEORGE S. LINCOLN- &#38; CO., Hartford
Cone.


AWS.HOE &#38; CO. S PATENT GROUND SAXVS.
t-~ Plastering Trowels, &#38; c., can be had, whinohseale and
retail, at the llriiieiluah hardware stores at thie sales
roomno oh t~e neaniufactorems,2o and 31 Goid street, er at
thine works tomnerof llroommie, Sheriff and Columbia ens.
New York. Illustrated catalogues, containing prices
and in~srniation interesting to sawyers generally, will
be sent by post on application.


GRIST MILLSOS, 30,36 AND
	Siam uter, at $100, $200, $300 mud $4101,
wills all hue modern snuprovements Also, I ortable
and Stationary Steuumn Engines of ill sizes, sustable for
said Mills. AGo, Rolters, Elevatore. Beltmn5 &#38; c &#38; c.
Apply to S. C. IIILLS, 12 Ph it et, New X omk


jljT ACIIINERYSTEAM ENGI il ~ I NGINE
LVI. Lathues, Iron Phuimuers, XVoodwomnls I hammers Saw
Mills, -and a variety ot other simachininimy, sor silo very
low for cash, to close consignments, I
	-	A. L. eVKI~PMAN
		163 Greene-ichin 81, New X ork.


I A. FAY &#38; CO., WORCEsq ER, ~
sP. bushid the best umuproveul XVoodwomtls Planes-s and
Matchers. Patented Aug. 11, 1951. Wrought iron cut-
ter hinead and flexible mouth-piece; will pla~e frossi ?-~ to
4 incIses thick.


CI HANGE OF RESIDENCE.  VERGNES
~J Ucetro-Chuemical Baths, 77s llrouudway.Prof
Vem-gues, thue inventor of these baths, celebrated for the
cs-rc of rhuousesatism mind diseases generated by the ab-
sorption oh mercury, or any otluer metallic medicine,
informuss Ilse pnblicand hiifriends that he hiss niovod
from 71(1 to 770 Broadway, whore hue attends to huis baths
personally, hsaviu5 no connection whuatover with any
other establishmemut in the city. Portable apparatus for
sale, with all necessary instructions. includine a new
process for administering iodine, quinine, etc. --


1~ OR SALETILE ENTIRE MACIIINERY AND
-N. Real Estate of the I)iamond Mills Muunufactnriu~
Co., will be sold at public auction on the 25th of Ocish
next, commencing at 10 oclock, A. M., upon tIme pritun-
isos, Lansiusgburg h, Rensselaer Co., N. V., muses ptre-
viotishy sold. Fsr pamilculsurs address
A.	K. POXVER.S, President,
-	Lanoingbusrghs, N. V.

I D. GOODW1NS CELEBRATED PATENT
-N.J. Cenlral Vent XVater XVhueel.For wheels or the
right of territory, address J. XV. DWIGHT, Dryden,
N. Y., or K. C. BRAMI-IALL, 590 Folton street, New
York.


I AP-WELDED lRON BQILER TUBES.
1.4	Prossers PatentEvery article necessary to drill
Ilse tube-ph, tee and set the tubes in the best manner.
TIIOS. PIIOSSER &#38; SON, 21 PlatI sI.. New York.

~HE BEST PLANING MACHINE lN THE
I WORLDPatented Nov. 21, 1854, and Nov. 13
leSS. These patents were obtained for improvemont~
upon the celebrated XVoodworlh Planing Machine.
They received a gold medal al the last exhibition of the
Massachusetts Charitable Mechanics Association. Ma-
chines of all kinds and sizes constantly on hand, which
are warranted to give entire satisfaction, and to be
superior to any now in use. For further information
address thue patentee, JAMES A. WOOBBURY No. 1
Scollys llnilding, Court ohm-cot, Roeton, Mass.


THE BEST BOOKS TO SELL.BOOKSKL.
	JIERS. Agents and Newounen will find a quick
sale for thoss new hmand.booki, just pusluhishmed: I )XV
TO XVRITEHOW TO TALEHOXY TO BE-
hAVE, and HOW TO DO IIUSINESS. Price, free
by mail, only 30 cents each, or the four in paper, $1.
Comlihete in one large gilt volunme, $1 50; now res~y.
Try them. Address FOWLERS &#38; WELLS,
101 Broadway, New York.
DECKS PATENT DROP PRESSTHK
	best machine in use for stampine jesvh - , orna- 7
ry
mente, tinwau-o5 swedging iron, - - A supply of all
sizes on hand and issade to order by the patontee, MILO
PECK, New Haven, Conn. Slato rights for sale.


I~ORBEs &#38; IIOND, ARTISTS, 80 NASSAU
N. street, New York, Mechiouuical and General
I)ranmghtomen on wood stone, &#38; c.


~ TEAM ENGINES, STEAM BOILERS.
k~S~oam Punups. Saw and Grist Mills, Marble Mills,
Rice Mill-c, Qnmartz - Mills for -old quartz, Sugar Mills,
Water Wheels, Shafting and Pulleys. The h~rgest as
sorlusent of the above ims thins country, kept constantly
on hand by XVM. RURDON, 102 Front street, Brooklyn,
N.Y.

TT~ HE POLYTECHNIC COLLEGE OF THE
I. 9tsuie of Po~nsylvania, West Penn Square, Pisila-
dolplmua.Thme Polytechnic College, Incorporated by the
Legislature, 185th, on the plan of the Industrial Colleges
of Pusris and Berlin, afiords a thuorough professional
education in civil engineering, naming enginserin~,
niochuanical engineering, industrial, analytical and agri-
cultural chemistry, metallurgy and archsitecture. Ample
facilities are provided for field and laboratory practice,
and assistant engineers may perfect themselves in any
branch of their profession. The Fifths Annual Session
will esuesmonceon Monday, Sept. 21, 1857. Apply to Dr.
A. L. KENNEDY, President of Faculty, Polytechnic
College, Phuiladelphsi


WEST PHILADELPHIA CHEMICAL WARE
~~Fact ry-Acid and fire-proof ware of all elmapes
and sizes, up to 200 gallons, made to order; warranted
to resist acids of all kinds, and stand changes of tem-
perature, from extreme heat to cold.
MORO PHILLIPS, 27 North Front at.

ECOND-HAND MACHINISTS TOOI.S
onsis ing of 20 Engine Lathes, hi Iron Planers, 4
Upright Drills, Hand Lathes, Chuck Latise, Gear Cut-
bra and Vices, all in good order, and for sale how for
cash. For particulars addi-ess FRANILLIN SKINNER,
14 Whitney ayenume, ~ew haven, Cones.


5,000 ~ WANTED  TO SELL
unequaliso inventions, want-
evouywhere. My ageuho have cleared
over $20,000 on them. Diplomas, silver medal and four
patents granted on them. For four stanips youhh me-
ceive forty pages particulars. Best agency in the coun-
try.	EPHRAIM BROXVN,
	Loseell, Mass.

~HE TENTH ANNUAL EXHIBITION OF
I.	the Maryland Institute, Baltimore, will be opened
on the 29th of Selstosober, and continue to thus 29th of
October, 1857. Goods for conapetition and prenmiums
will be received from the 22d to the 24ths of Sept. incin-
sive, afterwards for exhibition ominly. Mechanics, snano-
facturers, inventors, artists and others, of the entire
country, are respeetlully solicited to contribute to the
sasne, and assumed that every effort so-ill be usade to
display their works to the best advantage. Circulars
containing rules, regulations, &#38; c., will be promptly fur-
nished by application to JOHN S. SELBY, Actuary.
JOSHUA VANSANT, Chairman.

F ~ htiA i.E AT FLUSHING LONG ISLAND,
Ilse business and macisinery of John C.
e~uarteruuuans estate, consisting of a six-house power
eteam engine, a ten-horse power boiler, lathes, saws,
isoring and drilling musachulnes, rounding nuacluines, saws
for scroll work, and a usacluine for making shovel, coal-
hod and psuil handles, togothuer with all the tools and
fixiures. thus business has been established from this
year lOll, and to an ingenious usochuanic opens a good
prospect. Loin partuculusro apply to JAMES UARTER-
MAN, 114 John street, Now York, or to IA All ANN
QUARTERMAN, Fhussluing, L I. , who resides on the
hilace.


E.	a~d EJUSHINGs~ UNEQUALLED STRAW
of territory address the inventor,	 meork, or the might
county, N. Y.	Dryden, Tompkins


AST STEEL W1RE DRAWINGAT THE
	Tnion XVorks, Pateroon, N. J. Orders solicited
amid earefulhy fluted by CHAMBERLIN &#38; Co.


WOODWORTH5S PATENT PLANING
	lINES, of every kind and all prices. A
huirge assortmssent on luumnd ; and 1 am prepared to eon-
stmuct any machine to order, from ten days to tavo
weeks, and guarantee each machine to be perfect in its
construelion, and give purchasers entire satisfaction.
rho patent has expired, and will not be ronessed. I
musake Ibis business exclusive, nuanufactum-ing nothing
bit the XVoodssorth Machuines, and for that reason can
umuake a helter uurhicle for less susoney ; and with nay If-
hecus seams e.
	-	vltoindeisce I fully
guarantee cads nuachine
to come uuii to whmust I mum seihling to recousmesend, thuust is,
that cads machine shall be nuore thuan equal to an
other nssanuufaetuured br the sanse lines. JOHN I -
LESrEB~ 5i Scud st.eet, Bsooklyn, N. V., three blocks
above hutiten Fursy.


-5	lEAM PUMPS, HOlIER FEED PUMPS,
	C ohs Valves, t)il Ciiis, Cocks, Steam and Water
Cages, sold by JAMES 0. MORSE &#38; CO., No. 79 John
street, Now X ork.


OILER FI~UEoi- -ALL -IZiS, AND ANY
englis C esirco, prommsptly fusruuishued by JAMES 0.
MORSE &#38; Ci)., No. 79 ,holuu street, New X ork.

\V1tOLJti~-IT lRON PIPEPLAIN AND GAL-
	LED, sold at 8shuoleesule, by JAMES 0.
MORSE &#38; CO., No. 59 Johums street, Nose 0ork.

ENGRAVlNG ON WOOD AND MECHANI..
	1)RAWINC, lay RIChARD dEN EVChsI
Jr., 520 tulton ermeen, New5ork. Esugruiver to the Sd-
emutide Amuserieous.


pEARSON CRO~BY~ P XTUN1 hE WING
NIS.lhue Croshy Italeist hoc re-.sawing
husmnber, hoving been me-issued April is, lhiig, and leaving
puarchuased the right to use susnue cor liii eS- I OI New -
York amid Northuensi Pennsylvania, tinte suibocruhier ie tn-c-
pared to sell
	rights to 050 Iho lumminettines usm tine gri-stes-
portion of Ilso aheove named turu sissy , sod also ho fusmuiehin
the public auth these mmuas.uumnes Slaving so built usy
machuine resusnuif-setors as lucia ivas Oestrsy u S by fire en
thue 9th of Isuhiruars last I continue to manuuhssctuure and
have on husud for sale Vi s Ossoeth a Pit -m Planiuig
Machines, frona $150 to $1 Sec inC u I a qualty unequal-
Cd hiny any- ot-hasm mumanuufuset-ur   Aloe liii COt r ute hurts
of thu ~o achino, nansehy, hilanune knives Side t ohs, side
	seads, cy hind, me &#38; c , as welh as thus above usamised
Crosby Ro-sawun5 Xlachusnes JOHN CIb~CN,
Ph.nun~ Simile, Auhany5 N. U.

T ERS.~OR~~ AM) MANIJFACTUII..
	Ichoomess auth ~etssec, fos 5ii exhibition of
umachunemy, can hse had in the hinepet hituuhuumno, corner
of Elm and hmanklin streets, New X ork the loctution
Is extrenasly desirable for its puomnunonce and conse-
~ence to thus business part of the cmii Apply to r.
BENNETT, on the premises.

BELTING, STEAM PACKING,
	NE 1105KThe supemioruty of these arti-
cles, manufactured of suslcanized rubber us est-ubliohseil.
Every bell will be warranted suporuos to heather, at
one-timird less itches. The Steam I uckun g s sado in
every variety, and warranted to stand iso dogs of hisat.
Th&#38; hose never needs oiling, and us waumauted to stand
any required pro--sure; together so-ills all sarueties of
robber adapt C to meehanical purposes Directions,
pu-ices, &#38; c., can he obtained by maul or sihorwuse, mini our
warehonee. NEW YORK BI4L SING AND PACKING
COMPANY. JOIIN H. CIIELVI L, treasnuer, No. 6
Dey street, Ne~ York,</PB>
<PB REF="IMG00012" SEQ="0012" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="8">



~cicntitTh ~nretic~m.
~c~en~c an~ ~~tk+
The Late Commissioner of Patents.

	The readers of the SCIENTIFIC AMERICAN
have been made so familiar, through our
columns, with the name and official acts of
the honorable Charles Mason, late Commis-
sioner of Patents, that we have thought they
would be interested in knowing something of
his personal appearance and history.
	We accordingly present herewith an en-
graved portrait of the distinguished gentle-
man, together with a few facts concerning his
public life nnd his administration as Commis-
sioner. The likeness is an excellent one.
	Judge Mason is a native of the State of New
York, having been born in Onondaga county.
During his early life he spent four years at
the Military Academy at West Point, where
he graduated in 1829, with considerable honor,
receiving immediately afterwards an appoint-
ment as Professor in the same institution,
which he held for about three years. After
this he engaged in the study of the law, and
for some time resided in the village of New-
burg, N. Y., where he carried on the duties of
his profession.
	After this he removed to New York, and for
a time took editorial charge of the Evening
Post, during Mr. Bryants absence. It is
generally allowed that he discharged the
duties of an editor with that same thorough-
ness, earnestness and excellence which has
characterized his life in every situation in
which he has been placed. Subsequent to
this he removed to Iowa, and in 1838 was ap-
pointed Chief Justice of that Territory, which
office he filled for nearly ten years, with great
credit, and to the manifest advantage of the
public good. It was in this manner that he
obtained the title of Judge Mason. During
the period of his employment as Commissioner
of Patents, he was engaged as Law Commis-
sioner to prepare a code of laws for Iowa,
which has received the unqualified approba-
tion of all who have examined its various re-
quirements.
	Judge Mason was appointed to the office of
Commissioner of Patents in Marob, 1853, and
held the post for a little more than four years.
	The Patent Office was in a state of great
confusion when Judge Mason assumed its ad-
ministration. This was due, in part, to in-
congruity in its rules and regulations, and
also to a want of numerical force in its em-
ployees. Applicants for patents were com-
pelled to wait from six to twelve months be-
fore their cases received examination. One
of the earliest acts of the new Commissioner
was to double the examining corps, and to
augment the help in other departments. New
and efficient rules were adopted, and the
workings of the entire business were made
better to harmonize. Under the new 7egime,
the previous confusion and delays wholly dis-
appeared, and the Patent Office became dis-
tinguished for the promptness and regularity
of its transactions.
	Appeals, formerly heard by examiners, after
long delays, were now listened to by the Com-
missioner in person, at a moments notice.
The ease with which he penetrated the mys-
teries of chemical inventions, or unraveled the
complexities of difficult mechanical improve-
ments, astonished every one. He was prompt
and fearless in his decisions. He believed that
the Patent laws were instituted for the benefit
and encouragement of inventors, and he in-
terpreted them accordingly. If he was un-
certain as to the novelty of an invention, he
gave the benefit of his doubt to the inventor,
and ordered the patent to issue. The inventor,
sensitive and smarting under the sting of some
ill-judged decision of an examiner, found a
soothing balm for all his woes when he came
into the presence of Judge Mason. He was as
a father to inventors. He never knowingly
allowed an unjust rejection to stand. Much
of his time was devoted to the repeal of deci-
sions by illiberal examiners. He paid no at-
~tention to office hours. Many a midnight
hour has found him industriously engaged in
the examination of appeals, solicited, perhaps,
by some humble, unpretending applicant. To
him all applicants for patents were alike. If
he manifested any partiality at all, it was in
favor of the poor and helpless.
	The number of applications for patents made
during the year preceding Judge Masons ap-
pointment was 2,639. The number of appli-
cations for the present year is estimated at
6,000. This remarkable increase may be at-
tributed, to a great extent, to the wise govern-
ment of the affairs of the department by the
Commissioner.
	The annual Patent Reports were formerly
thought, cheerfulness, benevolence and lofty
feelings; his frame indicates considerable
power of physical endurance; his carriage is
easy and graceful, and his whole appearance
at once prepossessing and calculated to inspire
feelings of respect. In his conversation he is
frank, plain, concise and methodical, seeming
always to be self-possessed, and seldom hesi-
tating in a reply. His perceptions are re-
markably quick, and, like Mr. Calhoun, he
seems to come to conclusions almost instinc-
tively. All accord to him great powers of
perception, quick, close and powerful reason-


The Inventor of the Safety Lamp.

	Dr. Smiles, of England, has recently pub-
lished a very interesting life of George Ste-
phenson, the eminent English engineer. Inch
by inch he worked his way upward, from his
position as foreman to the pumping engine at
Wylam Colliery to that of the father of the
universal and magnificent system of rail-
roads. It is said of him that one of the chief
pleasures of his latter days was to hold out a
helping hand to poor inventors who deserved
assistance. In 1812, while engaged as an
engine-wright at Kellingworth, he made an
invention which would probably at once have
made his merits known over Britain, but for
his having a competitor in the field in a man
already distinguished as Sir Humphrey Davy.
This was that of the Geordy safety lamp
a lamp identical with the Davy in princi-
ple, though different in practical detail. A
very interesting account of the tentative pro-
cess by which Stephenson arrived at his safety
meagre, uninteresting volumes. Judge Mason
caused them to be illustrated with diagrams
of all the inventions patented during the year.
His report to Congress for 1856 will consist of
four handsome volumes. It was his desire to
see all the patents, with their drawings, pub-
lished in full by the government. But he did
not remain long enough in office to carry out
this gigantic enterprise.
	The following extract from a cotemporary
gives a correct idea of Judge Masons personal
appearance
	In person, Judge Mason is tall and erect,
with strong, thick, browii hair, a countenance
highly expressive of rapid and energetic
ing faculties, and all that suavity and genuine
good breeding which usually mark the accom-
plished soldier and scholar. In short, no one
can be in company with Judge Mason, even
for a few minutes, without being fully satisfied
that he is a man of exalted mind and charac-
ter.
	The father of Mr. Mason was an honest,
hard-working man, and his more honored son
followed the same laborious occupation from
the early age of twelve to his seventeenth year.
Judge Mason is emphatically a self-made
man.


lamp, as also of the controversy relative to
priority of invention which ensued between
Stephensons friends and the friends of Sir
Humphrey, is given in the work referred to.
Suffice it to say, that, though at the time the
fame of Geordy was eclipsed by that of the
Davy, and the unknown engine-wright of
Killingworth had no chance with the public
against the brilliant poet-philosopher of the
metropolis, and was even denounced most un-
handsomely by Sir Humphrey and his friends
as an impostor, the evidence adduced by Dr.
Smiles proves not only that the Geordy
was a better practical safety lamp than the
Davy, but also that it was independently
constructed and tried by its inventor (October
21, 1815,) before anything was publicly
known of Sir Humphreys experiments. Ste-
phenson felt the injustice done him by the ac-
cusation of fraud in the matter of his Geordy,
but he behaved manfully and modestly in the
affair; did not refuse the 100 guineas which
the coal owners of the North had voted him,
when they voted 2,000 guineas to his rival,
but waited his time when anothe invention,
which was then occupying hini, should give
him an undisputed title to larger rewards and
a wider celebrity. This wacs the inveution of
the railway locomotive, or, as Stephenson in
his simpler style called it, the traveling en-
gine.

Death of an Eminent Physician.

	Marshall Hall, F. R. S., the well-known
English physician, died at Brighton on the
11th of August. The deceased was one of the
most eminent members of the medical profes-
sion, widely known as a lecturer, author and
gentleman of high scientific attainments. lie
visited this country, accompanied by his son,
in 1853-4, and was received with much con-
sideration in all parts of the Union.

TO MECHANICS, MANUFACTURERS,
INVENTORS AND FARMERS.

In announcing the THIRTEENTH Annual Vhu,ae
of the SCIENTIFIC AMERICAN, which counneuced
on the 12th of September, the Editors and Publishers
embrsce this opportunity to thank their numerous
friends and subscribers for the eneouraging and very
liberalsupport heretofore extended to their journal, and
they would again re-assure its patrons of their deter-
mination to render the SeemsTune AMERICAN more and
more useful, and mere and more worthy of their con-
tinued confidence and good will. The undersigned
point to the past as a guarantee of their disposition to
always deal justly and discriminatingly with all subjects
of a Scientific and Mechanical charaeter whieb come
within their purview.
	Having entirely discarded the system of employing
itinerant agents to obtain subscribers, the Publishers of
the Soixirrsinc AMERICAN propose to offer
ONE THOUSAND FIVE HUNDRED DOLLARS IN
CASH PREMIUMS
for the fifteen largest ,lists of subscribers sent In by the
1st of January, 1838, said premiums to be dIstributed as
follows
	For the largest List	$300
For the 2d largest List -	 -	.	-	250
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OF TIlE

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-4

HON. CHARLES MASON.</PB></P>
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VOL. XIII.

THE

SCIENTIFIC AMERICAN,
PUBLIShED WEEKLY

At No. 125 Fulton street, (Sun Buildings,) New York,

BY MUNN &#38; Co.

0. D. SUTNN, 5. II. WALES, A. 17. BEACh.

	Responsible Agents ma~ also be found In all the
principal cities and towns in the United States.

	Sampson Low Son &#38; Co., the American Booksellers,
47 Ludgate Hill, London. Eng., are the British Agents
to receive subscriptions for the SorsoiThFhc AMERICAN.

	Single copies of the paper are on salo at the office of
publication and at all the periodical stores In this city,
Brooklyn and Jersey City.

	TERMSTwo Dsllars per annumOne Dollar Os
advance, and the remainder in six months.

	~ See Prospectus on last page. No Traveling
Agents employed.



New Method of Plating.

	Dr. Slayton, of Madison, Tad., has com-
municated a new method of plating to the
Dental News Letter, which we condense as
likely to ho interesting to our readers. lb
takes a set of teeth of silver, copper or hrass,
and after first carefully removing all grease,
ruhs one side with mercury until it has as-
sumed the mirror appearance, and then with
a pair of tweezers lays on the gold or other
foil cut in small strips; he then carefully
presses it into the teeth, rubbing it well in,
and treats another aide the same way and so
on.	lie can lay as many thicknesses of foil
as lie likcs, only taking care that one is firmly
fixed before the other is begun. By placing
the wlsole in a small oven, and applying a
spirit lamp, the mercury is driven o~ and
burnishing with a bloodsttsne or steel i~~r--
nisher, at first not leaning very hard, he oh
tains a rich gold plating, which will not even
melt oft and can only he removed by a tile.

ci O.e Ts~lexrap!s in India.
I oust on India like a tssnIsdsrcla~)

tlsat the n7tive regiments at Meerut and I)elhi
Isad mutinied, murdered their officers, massa
creed all the English inhabitants of 1)elhi,
placed the King of Delhi on the throne, and
threatened the empire. All this happened (Sn
the 11th of May. On tue 13th it was known
by telegraph to Europeans only througisout
IndiaI say to Lnrop~ns only, for immedi-
ately the poet was stopped, and an ehalsargo
placed on all native correspohsdencc. It is not
too much to say that the telegraph saved In-
dia. Whsetiser or not the report is true that
tlse l5tls of May was the day fixed for a
general rising of the Sepoy regiment and mas-
sacre of nil Europeans in the Bengal Presi-
(lOISCy, cannot he known yetperhaps never
will be known. If true, (and certainly the
rumor appeared with strange coincidence at
places far apart,) the 3d cavalry spoilt all by
beginning on the 11th at Delhi. In a momehit
the news was flashed to Lahore and Peshawur,
to Allahabad and Calcutta, to Bombay and
Madras; and all British India was on the
alert.~Loiidoa Tins~s.

The Canadian Canals.

rise ship canals of Canada are among the
fine~t in the world. The locks are none of
them less than 200 feet lo~ig and 50 feet wide.
In the Lachine canal there are five locks and
64 feet rise of water; in the Beauharnois
canal, arohsnd the Cedars, nine locks and 83~
feet; in the Cornwall seven locks and 64 feet.
The Canadians are also sense on bridge-build..
ing. The Xictoria bridge, which crosses the
St. Lawruce at Montreal, will cost, when
finished, Seven and a half millions of dollars,
which is only a half snillion less than the
original cost of the Erie canal, which is the
largest iss America.
NEW YORK, SEPTEMBER 19, 1857.

STOUTS CORN MILL.
	The accompanying engravings represent hi
very cheap and simple metallic mill to be
operated by haad or power, and majaly in-
tended for coarsely grinding graia for farm
use.
	Fig. 1 Is a perspective view of the whole,
Fig. 2 is a similar view of the grinding parts
slightly separated. Fig. 3 shows the face of
one of the grinding disks, and Fig. 4 shows
on a large scale, the peculiar arrangement of
the grooves or dress of the metal.
	A is the frame, and A a hopper which may
be of any size and form desired. B is a
pulley to receive a belt, and C the shaft on
which both the pulley and the grinding disk
is mounted. D D are bolts by which the
shaft C is moved eadwise and adjusted. E is
the running disk, and F the fixed one. (4 (4
are the radial furrows, and II H are the lands
or plane portions of the_faces. I I are shal-
lower furrows which stand at an angle diffe-
rent from (4, and in which the graihl is
chiefly crushed.
	The grooves or furrows, (4, are almost per-
pendicular on their acting edges, and conse-
quehitly do not incline to catch and crush the
grain, hut only to allow it to travel outward
from the center where it is received. On
reaching the grooves, I I, each grain is rapid-
ly crushed and discharged, the shallow elsa-
racter of I I making it impossible for the grain
to escape without disintegration, and the
angle of the grooves greatly facilitating the
rapadaty of its escape.
	By this device the grain is ground sufficient-
ly ~ne in a very rapid manner and without
heating. The inventor assures us that disks
nine inches in diameter,4(the size which he
__	NO. 2.

	plain the popularity of this color; it is not
cheaper, nor yet more durable than others, and
is only suitable where it is almost entirely
secluded among the trees.
In whose i,sclssecz shadow there was set
A fair pavilion, scarcely to be seen,

says Spencer, and this is the only situation
where white does not violate all principles of
harmony and beauty. We should look a little
more closely at the position of the house we
wish to paint, should study more minutely the
harmonious relations of color in natural ob-
jects, and should endeavor to appreciate more
truly the divine principles of beauty which
everywhere surround us, and then in coloring
large buildings we should not make the glar-
ing and offensive mistakes which everywhere
disturb the eye of him who has a just and
true idea of the harmony of nature.

Ice Water.
An extensive refreshment saloon in this
city has introduced a novel and elegant

method of serving ice water for the use of
I guests on their tables. The ordinary method

is by placing small lumps of ice in the bottles
or pitchers of water, and allowing them by
their melting to cool the water by which they
are surrounded, or else to place lumps of ice
on a dish, and each one takes the quantity
they require. The new method, however, is
far preferable, both for cleanliness and taste.
A glass bottle is filled with Croton water, and
then placed in a freezing mixture of ice and
salt; in about two hours the contents of the
bottle will have become one mass of clear,
beautiful i~e, pos~essiis-~ sill the properties and
flavor of Croton water. These bottles of ice
are placed ens the table, and the warmth of
the atmosphere gradually melts it, and from
it you pour your glass of ice water, and leave
behind a hard mass of ice, which has to liquify
I for the next customer. We understand that
the ice thus prepared melts very slowly, and
that very few bottles are broken in the freez-
ing process. On the whole, it is a great im-
provement on the old method.

Edneation lii England.
	We see from a report of the Registrar Gene-
ral to Sir (4. Gray, just issued, that amongst
the marriage statistics no fewer than 44,846
husbands, and 62,672 wives made their marks,
and out of the entire number married during
the year 1855, more than one-half could not
sign their names. Ihis is a fact which makes
us think that thin authorities had better at
once stop arguing in favor of or against the
voluntary or governmental systems of educa-
tion, and at once adopt some system by which
all English children shall be educated; and as
State education has so eminently succeeded
here, might not England take a lesson in our
school arid follow suit?

	It is reported that a block of pure crystalline
ice, weighing near 25 pounds, was lately dis-
covered lying in a field in England, the morn-
ing after a very stormy night. Mezeray, in
his History of France, mentions a block of ice
weighing 100 pounds, that fell during a thun-
der storm in the year 1510.

	The Genie Indosts-id for August informs us
that five experiments on the cultivation of the
Sorghum, or Chinese sugar cane, in France,
principally near Paris. have been attended
with great success,
prefers for mills robe sirivems by power,) ecu he
driven at from 300 to 400 revolutions, and will
grind five bushels of corn per hour.
	This mill was patented Dec. 16, 1836. For
further particulars, address the inventor and
patentee, Thomas B. Stout, Keyport, N. J.

Color of Houses.
A valued correspondent in Michigan. who
has had much experience in rural affairs, and
is a true appreciator of beauty and harmony,
has sent us a communication to the effect that
lie is surprised at the waist of taste and reali-
zation of picturesque effect which is displayed
in the coloring of houses; and we must con-
fess that we wish persons building a house or
painting the outside would juat pause a mo-
meat before beginning, and think what style
or color will best harmonize with the sur-
rounding scenery. Thins, he truly remarks
that gray, drab, or buff for cottages, and for a
large mansion with broad roofs and spacious
verandah,, a gray or drab; or if built of brick
or stone, a gray is most suitable. No color
gives so much liveliness, or evinces so much
taste and refinement, as a light buff, with the
casings or cornices a shade or two darker.
	Strong positive colors, ssmch as white, red.
green, etc., are usually in bad taste, es-
pecially when surrounded by green fields, um-
brageous orchards, and golden fruits; while a
mild neutral tint lends a charm which the rest
do not afford.
	A singular fashion prevails in this country
of clothing every dwelling, no matter what its
situation, size, or character, in sepulchral
white, avhethser it stands on the rising knoll of
some pleasant plain, or in the quiet country
embosomed in groves and it is difficult to ex
_______________________________	I
	I,,






Ii









	Sound travels at the rate of 1,125 feet in a
second, at the temperature of 60~ Fab., or
1,090 feet per second at 32 0 Fab. This is ~
increased 1-14 feet for every degree of tempera- ~
turn of Fahrenheits thermometer.
i
THE ADVOCATE OF INDUSTRY, AND ~JOURNAL OF SCIENTIFIC, MECHANICAL AND OTHER IMPROVEMENTS.</PB>
<PB REF="IMG00014" SEQ="0014" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="10">



ticntific ~nwrica~+
[Reported officially (or the Scicnszjfic .4morzcaso.[

	COAT SnsrccsSanford Adams, of Boston, Moos. I
claim attaching the sieve to the bottom of the rotating
opindle and tho spindle to the cover of a barrel, in tho
mannor and for the purpoec as above specified.

	SEED PTANTresCyrus C. Aldrich, of Faribault, Mm.
	or. I claim the box, I, provided with the plunger, c,
when said plunger is operated by the lever frame, J,
sirranged es shown and described for lbs purpose set
forth.

	[This invention consisto in making the boxes which
measure end deliver the seed with a convex or semi-
cylindrical bottom, fitting into a concave recess;
lucy have a perforation in the bottom, and are gradually
ealliated to and fro by means of levers connected by
cranks to the axle of the cart; also a box provided with
Ti lunger operated on by a lever france which regu-
lates tile delivery of the seed, and the application of
wetelit iTT the covering TiP of the seed, and compressing
the oil 1111111 it. This class of machines has often
failed from the passages becoming clogged with earth,
icut in tills invention this is prevented by the plungers
en(l accompanying machinery. There is a marker at-
ladled to tile planter, which marks the place where the
seed bee been deposited and covered, and tbus enables
the driver to plant in rows that arc perfectly parallel.]

	CORN PT.ANTF.E5D. R Alden of Unionville, 0.: I
do uot clahn the wheel, F, for distributing the seed or
conveying it from the hopperinto the spout, for they are
mccli kuown and in quite common use.
	But I claim operating or rotating the wheel, F, by
meau~ sif tile belt K, having knobs, i, attached, aud the
aciper wheel, e, attacheil to tice silaft, b, of the wheel F,
tile above parts being arranged, substantially as shown
aud deceribed.

	[This is another invention in planting machines. but
fir corn pleilters exclusively, and tile improvencent con-
sists in rendering the maclIme capable of delivertug tice
cern into tiac ground at greater or less distances apart
asillay be deired, end also keeping the delivery spout
	by means of a plunger. The delivery is effected
clean
	ymeans of a wheel fluthag into the icottoma of tile hop-
pci, and having a unulber of holes in its periphery
which receive the oced aild convey it to the slioTIt. The
axle ci tills wheel projects through the block, and is
turned hsy means of a knotted hand which passes round
the transport wheels; these knob fit into projections at
	nil 11f the delivery wheel, by changing the position
elf tlle knots either checer or further, the cccii will be
cow-n elmer or further apart.]

5 orN Pc.Acoa.i:sH. K. Ahlcu, of .Xtheni, 0. I claim
the li-ver, .J, Titus K, scraper B, spejime, I, anil rake II,
irhien accented in lice manner described, amid in coin-
hinet ion wiell tile eliiiiit fo, aiid valve V. for tile purpose
set tortll.

	TUTiES FOR Sve:AaT FREesT-cE (iAoesE. Ih. Ash-
croft, of Ihostomm, Mass. I claimli as aim improvenlent in
Tiressicre and vacuum gages time described tiihse formcied
by iiccasing one tube meitisin another, em act forth fcc thle
purpose specified.

	(uxTixo Fmomaes OTT OF STIERT METAlC. P. S.
Belts, of New York City: I clailla tile combination of
the lode or shielir, ii, mi-ithi the stationary blade or lied
ellsTir, b. 1110(10 SIld lictilig OTibOtantially as specified;
eden-by the said ShOal or blade, d, acting against the
shear or blade b, firi4 perforates ant thmm-n cuts thce sheet
of metal or oilier niaterial ; and this I claim whetlcer
thus shueor or tulade, b, he made stationary or adjustable
for varying the cutting angle as specified.

	IRSULATEcI TRLEORAPITTIJ Wiacs PNOLO5ED TN Mc-
TALLID TUmiING..- Samuel C. Biebtup, of New York
new I clilini tile article above described as a
licanilfacture, consisting of wire insulated isv a
cuiveriug tif giitta percha or india rubber, firocly en-
closed in a coating of lead or other ductile mIletal.

	fieveesmore JiAmaroAn (Au COinm.ucoJosepb Booth-
reyd, of Michigail City, Imid. : I do not chaini ucerely lIce
erreneemllent for oblamnimig play in the coiiplimig, tier do
I cloloc coupling by lice falling pin or latchI.
	hut I clalol tilil device us described by whilcil Dy
ciiiihilingo revolvo, 00 as to present either a behh iuuout
	a link, aicd at the same Ilule admit of all necessary
play to acconlucodate the ucotion of tbe cars.

	ILCNUEACTURTNO VERciIoaTsLudwig Brumlen, of
lhich)oken, N. 1. I demo first, To use all these refuse
liquids frium chrouce yellow and whlite lead to ucake ver-
(ITyris of theuc. -
	Second To nec the remaining liquid frona verdigris
to make l~aris green ci.
	Thirul, To misc the rencaining liquid frona Paris green
again for ucaking chrence yellow.
	Fourth, To icse thu retiise liquid from verdigris again
for veruligris, in tile uianner described.
	Fifth, I foirther rlahn thio manufacture of verdigris,
Paris groin and chromuce yellow, frona the different waste
liqiiiils specified, in the ucanner siibotantiolly as de-
ecrihseuh.

	Gao ImcroavsSasunuhem-s (salem, of Near York City
I ciainu lorucing a false bottom for gas retorts froucl
inettul ruf diesimihar decries ot fusibility, viz., one such
as leaul ha combination witim one such 115 iron, rooting
upon the easily fusible niotal, substantially in tics man-
ner and for the purpose described.

	IaicROvrn WRumonTI. M. Clark, of New Britain,
Cl. : I claluuc as my improvement on wrenches time coin-
binatioll witil a ho.ok or claw griper, a, hinged to lbs
permicanent stoik, and acted on by spring of a shidine
rag juiad, e. luaving a screw adjustment on or along thce
]iiruccaTueut stock thur joint and independent action, in
Ilue mululuner set forth.

	VAuOIc LAMPsJ. Cr. Gilbert, of Near York City: I
do not clamna lice muss of cork alone, nor do I clamia the
outer cylinder, as Ilcey are both old devices; neither do
I claim hue form of the ring separately as a part of lIce
heater or burner.
	I clainm hue combination of the sniplmur and cork, in
thue manner and substantially for the purposes set forth.

	CORN Sumri.esamsAndrsw Dillman, of Plainfield, IlL:
I claimo, in combination with an inclined trunk such as
described, tile inclined carrying apron or belt M, with
its hogs, f g, arranged in manner and for the purpose set
forth.

	Soarms PLANTEE5J. W. Ells and Joe. Chariton, of
Iittaburg, Pa. : We claim time combination and ar-
rangemnent of tile reciprocating feed shide, J, with the
ciutuiff slats, 1 1, and the brush L, in the manner and
for the purpose set forth.
	METALLIC PAcmcueso FOE PISTONS OF STEAM EN-
ouxiesfo. H. Corhiss, of Providence, B. I.; I am aware
thuat springs of circular form have been employed to
force out the packing rings, but such springs have in
their normal condition been either straight or nearly
so, ulod ticeir elasticity produces merely a tendency to
straighten themuselves, and acts with greater force at
taco opposite points than at any other points of the
packing ring, and these springs cannot be considered
as elastic in the direction of their circumference. To
hue invention of sucha springs, however, I lay no chamm.
	Nor do I claim the employment of air vessels placed
within the piston, in order to assist the packing thereof,
as in II. A. Strattons device, rejected in 1851.
	Biut I claim the arrangement within a piston of thus
cylindrical springs D, in the manner and for the pur-
poses an botantially as described.

	[The springs whichi are flue subject of this patent are
possessed of lice toihoaving characteristics which distin-
guish thueni frona lice ordinary piston packing, viz., that
they are elostic in the direction of their circumference,
and not, as musually, in the direction of their diameter.]
	MACumNE. FOR Duuviaeo GRAIN, &#38; o.Christian Custer,
of Philadeiphala, Pa. : I am aware that kilos or devices
provided with drying cylinders or chambers heated ar-
tificially or by stoves have been arranged in various
avays, and Ilcerefore I do not claim separately. or inde-
pendent of their construction and arrangement the
parts shown and described.
	But I claimam the rotating and vertically reciprecating
drying chaunber, formed of the series of vessels or pans
I, and guide plates K, placed on the shaft E, and con-
osructed and arranged as shown, in combination with
the furnace B, drum A, and hot air chamber D. the
above parts being arranged relatively with each other,
as and for the purpose set forth.

	[A din-nm contains the grain and revolves in a fur-
nace surrounded by a chamber of heated air, which, by
its revolution and by an arrangement for moving the
grain, continually exposes a fresh surface to the action
of thue heated air, thus thoroughly drying the whole.)

	TTouTzascNo Tuminzs or CATIETAOz Wmmzmz.sJ. M.
Dick, of Buffalo, N. Y. : I claim the combination of the
wedge, E, and bolt F, or their equivalents with the
fehhies and tire, substantially as set forth.

	MOWONiS MAommoesG. C. Doiph, of West Andover,
0.: I clainu the lever, a, links e~ sliding box g, and guides
h h. with the adjusting wrist, j, when arranged as set
fortha, and in relatmon to an adjustable cutter bar as de-
scribed for the purpose specified.

	CARTRIDGes FOR Beeeomm LOADING FTEE-AEM5J. D.
Greene, of Cancbrid~e, Mass - I claim the described
cartridge having lice ~ahl behmnd the powder, and a wad
behind the ball, operating in time manner as set forth.

	MAcamiNe FOR IhAMMINO UNDER THE Cuoss Tmzs or
RATuaooAusil. B. Harrison, of Vicksburg, Miss. : I
cluliun hue movable machine for ranuming earthy matter
under tice cross ties of railroads, said machine being
composed of reciprocating rams and suitable actuating
levers coumbimced with a platform car, substantially as
set forth.

	hAND Seen PLANTERsjoel Haines, of West Middle-
burg, 0. : I chaim the opening, w, through the standard
or its equivalent, so arranged as to form a bar or scraper,
substantially as described, to clear 11cc earth or wet
earth from the plunger as it is pushed down and de-
liver it out through time openin~, w, as described, whether
the umpper edge of the scraper us curved or otherwise.

	STEAW CuvvmmsPorter Hill and C. E. Jones, of
Miliport, N. Y. : We claim the combination of the ro-
tating knife or cutting disk H with the series of re-
volving chambers, F, arranged around a central shaft
or axis in such a manner that the revolutions of the
sauce shail bring the stracv in each successivehy between
tile edge of the knufe and peripicery of the chambars.

	Second, We further elaine time manner of feeding the
straw to time knife by nueaus of the eccentric, j, thins per-
manent and muovable ratchet bars, I, m, and dogs, on,
so arranged as ho croard the stracv forward only when
the cicamber, F, by descending is clear of the action of
thus knife, and also be capabie of adjustument to different
degrees of feed, as set forth.

	ATTAc-muuNes Woees TO BELL TELEGRAPHS
lIochustrasser, of Phlihadelpllio, Pa. : I do not claim any
iunmurovement on any machine to which the intermedm-
ate springs may be attached.
	I chaim the interucediahe spring, or his equivalent,
substantially as described.

	CORN PLANTER5D. W. Hughes, of New London,
Mo. : I do not ciaim the hero strips or bars joined to-
gether, and provided critic a hopper and silde, irrespec-
tive of the peculiar arrangencent of the shide and hop-
per, for such device, having a dIfferent arrangement of
parts frona that shown, was formerly patented by me.
	But I claim connecting the two implenments together
by mneans of the plates, ha, and bars, m, and tuendent bar
,J. arranged as shmoavo and described, for the purpose set
forth.

	ruhuls is Oh improvement on a former patent, and
consists in connecting the Icopper and shides in such a
manner that two roars of seed ucay be plauted at the
somace thee. In tile patented device the holuper and
slide avere luloced below the joint or pivot of the blades
echichi carried, tice one tile hopper, and thIs other time
slide; in the imnprovemnent tiley are mulaced above, and
connect two implements imm such a cray that they work
simnultaneoushy.]

	Macunixe FOR Pmeauouueeso PAPER FILLETS FOR TEAMS-
MITTING TELEORAPTUC SuGceALs,John P. Humaston. of
New Haven, Conn. : I claim firstly, The manner of op-
erating the punches for perforating the characters in
the paper, consisting of hue revolving hype wheel, or
other equivalent nacans of indicating characters in
eumbunatmon wmth the pumnches as described.
	Secondly, The metilod of regulating the feed of paper,
consisting of the graduated stop wheel, or equivalent
series of stops, in combination critic the type wheel, and
with the means for propelling the paper duet past the
punches, as described.
	Tilirdly, The manner of forming the cutting ends of
tlce punches, that is to say, imaving its advancing end
funned into two cutting edges, by means of time V-
uluaped recess, in conchination with a second pair of cut-
ting eulges opposite ho them, formed in like manner and
upon tice same plate, blut in liosition at a right angle to
the first pair, thus ncaking the other half of the shear,
in conjunction with an adjoining munch, substantially
in the manner set forth.

	AtuTocTATase B. B. CAR BRAEEW. B. Jackson, of
Baltimore1 Md.: The improved coupling described I
do not cloam under this appiication, as I have made a
seluarate ahuphication of even date herewith for that part
of the apparatus.
Bui I claim as my invention the mode described of
controlling the aetmon of the spring or springs which
bring the brake blocks to bear upon the tread of
tIme wheels by the operation of the tractise force, or its
suspension, so that the wheels shall be free when the
vehicle is being drawn forward or backed, and the
brakes applied by the momentum of the train when the
tractive or the backing force is withdrawn.

	GRINDING MTLLsWilhiam Stouffer, of Middlebury,
md.: I claim the combination and arrangement of the
arm, a, with the arm, h, and the sliding rod e tog ether
with the cam I on the shaft, G, the beam, ,J, the rod,
m, the weight, A and the connecting beam, K, for the
purpose of arresting the motion of the mill, substantially
in the manner shown.
	I also claim the arrangement of the cord, i, with the
shaft, j, and the springs, for the purpose of ringmn~ the
bell, h, to notify the attendant when the grain is
nearly u-un out of the hopper, substantially as herein set
forth.
	SmmEmn-SuEiRneG MAcmcszJ. V. Jenkins, of Jack-
son, Mich. : I do not claim the cutting device formed of
the vibrating cutters, z, working over the stationary
fingers, a, for this has been previously used.
	But I claim connecting together the two shafts, F G,
and also the shaft, G, to the cam shaft, H, by universal
joints, the connecting joint of the shaft, F G, being pro-
vided with guards, p v, and connecting the upper end
of the shaft, F, by a joint, h, to the slide, K, on the
swinging bar, D, substantially as shown and described,
for the purpose setforth.

	[The peouhiarity of this improvement on a former
patent consists in the method by which the motion is
communicated from the power to the enthing device,
which is like that of a patent mower, and it places the
whole under the command of the operator, giving hina
facilities for moving the shears to any part of the bedy
while the whole is in motion.]

	MACHINES FOE LASTING Boove AND SumoesJoho
Kimball, of Boston Mass : I claim combining the toe
rest and its clamp in the attachment plate by means of
an inclined rod, as described, so -that both may be
moved together, in order, at one and the same time, to
clamp the upper to the toe of the last, and move the toe
rest towards the heel post, for the purpose described.

	WEAR IRON FOE CARRIAGESI George Lefler, of
Philadelphia, Pa. : Having described my improvement
and discialming a guard broadly, or allowing the wheels
to pass partially under the body of the wagon.
	I claim the peculiar construction of the metallic re-
cess guards, B, with the flanges, a a, bearing againot the
bottom and sides of the body of a plain carriage or
wagon, and arranged with the lather as and for the pur-
poses set forth.

	BOLT FOR SAFEsStuart Perry, of Newport. N. Y.: I
claim so combining a safety bolt with the hock of a
bank, vault, store, or other door, through the means of
a bar or trigger, as that the forcing of the lock by an~
means from the door shall trip or release the safety hol
and ailow It to securely fasten or hock said door, sub-
stantially as set forth.

	SCYTHE SNAvusAbnsr H. Pinney, of Columbus, 0.:
I claim uniting the two pieces, C E1 by a branched fer-
rule, A B, for the purpoos of makung a scythe snath
that shall have the proper form without being bent into
that shape, and the necessary strength and rigidity to
make it an economioai implement, as described and
set forth.

SIGN.etS FOR STEsamOATsAlbert Potts, of Philadel-
phia, Pa. : I claim the system of signals for steamers
formed as set forth by lights mounted upon movable
crsnes, and rotated from the paddle wheel or propeller
shaft.

	WASH MuxTucuss FOR Woou.eass, &#38; se.Wihhiam Rel-
sig, of Astoria, N. Y. : I do not claim any hard or solid
soapy compound containing ammonia or soda ash.
	But I claim an aqueous saponaceous composition wihh
the alkalies in excess as described, and in about the
proportions specified, for the purposes set forth.

	[All yarn and wool in its raw state, contains a fatty
and gummy substance, whuich renders it incapable
of receiving a dye. so that before it can be dyed this has
to be removed. This is usnahhy done by means of a
hard soap in the process called scouring, but it cannot
do it effectually without great labor and expense. This
invention provides a cheap aqueous solution in wicich
the wool or yarn can be scoured, and which ccii cleanse
it from all dirt, grease or gum in a short time, and ef-
fectually, for one of the ingredients cannot conveniently
be made into a hard soap, and it is here presented to
the wool in the state which it easiest acts and is acted
upon, namely, the liquid. This invention is of value to
all connected with woolen manufacture.)

	MORTIsING Cnmszi.John A. Scroggs, of Bnrhin~ton,
Vt. : I claim my improved self-clearing mortising
chisel, whose peculiarity consists mainly of its oblique
grooves, whicla operate substantially as set forth.

	Locs.s,Jolcn P. Silerwood, of Fort Edward, N. Y. : I
claim the improvement in locks produced by so shaping
and arranging the belt, A., and the tumbler, B, of a lock,
that the said tumbler is enabled to retain the bolt with-
in reach of the arms, i i, on the knob shank follower
when it is used as a spring latch bolt, and also retaid
the said bolt in a position beyond the reach of said
arms~ when it is thrown outwards by the key into a
position to serve as a lock bolt, substantially as set
horth.
	I do not claim the use of a dead latch operahine di-
rectly on the locking bolt, to prevent it from h.~eing
lock~d or unlocked by tile key, as that device is well
known.
	But I claim the combination of the lever shank, n,
with the tubular pivot, d, and the tombler, B, in Such a
ncanner that it may be made to firmly lock the tumbler
in such a position as to protect the bolt from any action
of the key, and thereby pr event the locking or unlock-
ing of lIce belt, in the manner substantially as set forth.

	DooR SuaTNssEdward P. Torrey and William B.
TihIon, of New York City: We do not claim any of the
parts separately considered.
	Neither do are claim the combination of a shop pin and
adjusting.device applied for regulating lice upright tor-
sional rod spring, irrespective of the arrangements of
said parts.
	But we claim as our invention, and as a necessary
auxiliary to render such adjusting device practicable
and useful the arrangement of the adjusting cog
wheel between the two notched ears of the bracket, and
the pivoted stop plate on lice face of the bracket, and in
such relation to said cog wheel and the notches in the
ears, that the whole operating together as specified will
form a firm and substantial adjusting device for the up-
right torsional rod spring, as set forth.

	[This door spring has the jeecuhiarihy of retaining its
tension without diminutien. It is simple, cheap, and
convenient; will not only keep a door shut, but can
also be adjusted to keep it open without changing its
fixed position.]

	Cmma.czxsDaniel K. True, of Lake Village, N. H. : I
am well aware tilat dashers made in the form of grates
or perforated arith holes, are not near, and maybe found
inn the specifications of Enoch Thomas and John
McLaughlins patents, therefore I do not claim their
application or use.
I claim the employment (in the rocking and other
churns of similar operation) of a separator when the
same is constructed, arranged and applied substantially
in the manner and for the purpose herein described and
set forth.

	BRICK MsCurazsStephen Ustick, of Philadelphia,
Pa. : I claim the osciiating filling box, K, with projec-
tions, c c, at its ends, in combination with the condens-
in5 mold, G, having depressions, c c, at its ends, when
said parts are constructed and arranged to operate in
relation to each other, and in connection with the pis.
tons, K and K, as described.

	BLAST FURNACESamuel Wilkes, of Hammsndsville
0. : I do not claim the use of steam in the smelting and
making of iron.
	I claim the introduction and application of steamet in
blast furnaces at the boshes, whether at one or more
points, substantially in t~e manner as described.

	PAnLocicLinus Yale, of Newport, N. V.: I claim
the use of the tongued and grooved sliding joint, operat-
ing in concert with the jointed stops, as described.

	MANUFACTURING WooDincte WAsmmnOsamsL. B. Batch-
slier, (assignor to West, Canfleld &#38; Co.,) of Arhiughon
Vt.: I claim the machine constructed, arranged and
operated as substantially set forth.
	WASHING MACHINESPhilip N. Woliston, of Spring-
field, 0. : I do not claim the tub, A, provided crihum a
rotating, reciprocating rubber disk, or theis is a well
known device, and has been previously used.
	Neither do I claina any particular form of cleats sr rub-
bers, 1, on the rubber disks.
	But I claim the auxiliary rubber disk, K, in combina-
tion with disk B provided with cleats or rubbers, 1, on
both sides, and thee cheats, 1, on the bottom of lice limb, A,
the whole being arranged for the purpose aet forhlm.

	[Wolistons washing machine is an improvement of
some ingenuity on the ordinary household tub maciline.
It consists in a fixed india rubber bottom ho the tub,
having a ribbed or corrugated surface, and anotluer
movable disk of rubber with a ribbed surface aiso, which
is capable of being so adjusted as to wash either fine or
coarse fabrics.]

	SACCHARINE EvsuoRsvoRsJoseph Dour, of Forbach.
France, (assignor to Charles Parlange, of the Pariah of
Point Coupee, La.): I am aware that ills not new to
cause liquids to be evaporated by the movement of sur-
faces into and from them, when placed in open vessels,
various forms of apparatus for that purpose having be-
fore been proposed and used. In some cases the sur-
faces have been hollow and heated by steam internally,
and in others the liquid has been heated. I mention
these matters in order to state that I do not claim to
evaporate liquids by such means unless the apparatus
be constructed and combined according to my inlprove-
ments described.
	I claim the combination of a series of hollow vessels, a
a, such as described, with apparatus on the interior
thereof, for raising the water to, and passing it off by
the central axis, and the further combination of sueb
like surface a a with vessels or apparatus, e e, for rais-
ing the liquid ti he evaporated, and distributing the
same over the exterior of the revolving surfaces, as de-
scribed.

	HARvEsTEOIsC. M. Lnfkin, of Ackworth, N. II., (as-
signor to Norris Luf kin, of Unity, N. H.) : I am acrare
that two series or sets of cutters, working one set ever
the other, like shears, have been previously used, and I
therefore do not claim cutters thus arranged.
	But I claim the combination of the cutters, n and o
within the peculiarly constructed plate, J, auvanged ansi
operating in the manner and for the purpose above set
forth.

	[This invention consists in the arrangement of the
cutters, by which they are prevented from clogging;
the sickle can be raised and lowered to suit the occa-
aion, and the points of the cutters and fingers can be
elevated or depressed, so as to avoid all obstacles which
maybe in its path.]

	CULTIVATOR TiceTuEdncund L. Freeman, of Brown-
yule, N. Y., (assignor to lcimsehf and .1. &#38; G. Lord &#38; 
Co., of Watertown, N. Y.): I do moot claim a metal cast-
ing to form a head or stay pin of the tooth.
	Neither do I claim a bolt for connecting to the frame,
as they have been long known and used.
	I claim first, A lapped headed cultivator tooth. A
made in the manner substantially as described.
	Second, A brace washer and stay pin in one piece
underneath the head, substanhhuilly as deecribed, for tile
purposes set fortla.

	PEGGING Boovs ANO SHOESSeth B. Tnipp, of Win-
chester, Mass., (assignor to icimself and Luther Ilill, of
Slonellam, Mass.): I claim in machines for pegging
boots and shoes (arben the gate which carries the awl
and driver is allowed to swing freely In a p lane perpen-
dicular to the surface of the sole, or nearly so,) the ar-
rangement and combination of the spring, U, the disks,
P and a lever, b, with its toggle joint and connecting
rod, c, and the lever, T, for tine purpose of bringing
down, clamping and releasing the gate, in the manner
set forth.
	Second, I claim thus feeding pawl, bS, with the spring,
C, and slot, d2, in combination with the huolding pawi
or belt, f 2, operatin in lice manner and for the pur-
pose substantially as ~esnibed, whereby lice oniouunt of
feed of the carriage, H, is regumlaled, and this latter is
held stationary, as set forth.
	Third, I claim regumlating the motion of the carniacs,
H, by means of the combination of lice following de-
vices, or their substantial equivlolents, viz., tine groove,
12, pin, ni, dogs, x2 and y2, shops, vi and p2. blocims, w2
and v2, and guide, z, operating iuthle manner eel fortlu.
	Fourth, The combination of the devices employed, for
the purpose of cuttmug off a portion of the pegs, anul for
adjnshing the throw of the awl and driver ho corrempoud
therewith, or their substantial equivalents, wiuereluy the
awl and pegs are prevented fronc penetrating the last,
as set forhiL
	Fifth, I claim the offsets, 1 and 2. upon the slides, w
and x, operating in the manner set forth, for thus pun-
pose of causing the driver to descend over lice hole muuuuule
by the awl, as described.

	EXTENSION Gss TueRsCharles Monson, of New
Haven, Coun. : I chain not the device of extension
levers by itself, nor any particular forum of tube by it-
self.
	But I claim the combinahion of levers and tubs or
tubes, substantlaihy as set fortlu.
	I claim the muse amind application to a gas tube of jointed
extension levers, like, or operating siuhuotanhiahly upon
the principle of, those I have describeul.
	I claim the use and application thereof, as an instru-
ment for extending the reach and eontractmng thus reacic
of a gas tube, or of gas tubes, of wilatever forum, amad tom
holding and guiding the same.
	And finally, I elaine tile use of said levers mis son in-
struncent for relieving or preventing the strain uuf Iruic-
lion or of creight umpon said gas licbe onul Tumuuuul thuc juutuits
thereof, snbst~inhially as shown.

	Sssu LocinoWilhiam Patton, of Toavmuuuhuo, Ia. : I
claim in combination with the single axle, e, the self-
locking hook, C, and self-aching double bcuuek fuust~muer
K, so arranged as to act independently of each uutber
and so that they may be shifted on said axle he fuuuIuc Iu
right or left hand catch, as set forth.

	MACHINE FOR FORGING NUTSEdward Pay anul Sanmi.
Hall, of New York City: We claim the iceneme-ring
apparatus as described, in combination with the puuncil,
I, and time punch, L2, arranged and operating in Ilce
manner set forth, for making nuts, substantially as de.
scribed.
ER-ISSUE.

	Coaem.oeuTuoass FOR Rooriico.,Iamcs Wu sI. cf Syra-
cumee, N. V. : I claim the use of him in cuunubination
with the rubber or guitha percha and shuuhloc el ustions in
the compesition as set forth, and for thus epics speci-
fied.

DESIGNS.

TvrcGeorge Bruce, of New York City.

	SAD-IRON Svovz.S. W. Gibbs, (assignor to Winne &#38; 
Abeel,) of Albany. N. V.
	SvovRsGarrettson Smith, Henry Brown and Samuel
H. Sailor, (assignors to J. G. Abbott and A. Lacvrcnce.)
of Philadelphia, Pa.


EJoiFection.

	In a recent notice of the launch of a ateam-
boat designed for propulsion by side screw
propellers, under Capt. Wlcitakers patent, we
stated lice length of the veasel to be 110 feet.
Our figures Were wrong. It should have been
210 feet, a very material difference. There is
every prospect that this enterprise will prove
successful. Tico elements for success are of
the right sort.
lissused frommi tIme Ummhted States Pateist 0111cc
FuR Time werE ENDING SEPTEMITUR 8, 1557.
II</PB>
<PB REF="IMG00015" SEQ="0015" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="11">






Compressed Air Baths.

	MESSRS. EDITORS :In No. 48, last volume,
of your esteemed paper, I notice an article, by
Dr. Taylor, of New York, strongly recom-
mending the use of a compressed air bath.
Although my professional duties hardly allow
me time at present to review this article, still
the high regard which I entertain for your
widely-circulated paper prompts me to offer a
few remarks on the subject. I will endeavor
to be as brief as possible.
	Before entering into particulars, I will state
a few cardinal principles in regard to consump-
tion, which will aid us in discussing the sub-
ject of the compressed air bath.
	Consumption is usually preceded by a de-
ranged state of the general health, and the
tubercular deposit is restricted within more or
less circumscribed limits. The chief thing to
be apprehended is3 not the existence of tuber-
des in a circumscribed portion of the lungs
since experience has proved that these bodies
may remain in a crude state for a long period
without any serious detriment to the health,
that they may be absorbed, may undergo the
cretaceous transformation, or be expelled after
the process of softeningbut rather the per-
sistence of the tuberculons diathesis, which
gives rise to successive depositions of the mor-
bid product. A remedy, then, should be pre-
scribed for the diathesis, or the cachectic part
of the system, end not for its local manifests
tiolis.
	Cases of plithisis frequently originate in
painful moral impressions, ~vhich act by un-
dermining the general health.
	Tubercular cachexy is also induced by want
of action in the skiii. The skin is the second
respiratory organ.
	Dr. T. would cure consumption by forcing
air into lungs which he supposes to be one-
third unfit for action in consequence of tuber-
des arising from congestion or inflammation;
he entirely overlooks the fact that there are
more powerful agents at work than congestion
or inflammation to produce this fearful dis-
ease. 1f as lie asserts, air is the great essen-
tial, then pulmonary consumption could soon
be arrested on the summit of the Alps; but
this has never been the case. He ought to
know that respiration is very easy on Mt. St.
Gothard. But this is not all. Un~form pres-
sure of air is one great requisite to the cure of
consumptive patients; but how he can effect
this by first placing his patients in an air
bath, and afterwards exposing them to the
(not particularly condensed) air of a hot July
day in New York, I cannot tell. Far from
husbanding the powers of life, he only
wastes them.
	Again, what constituents of air does Dr. T.
prefer ?oxygen, nitrogen or carbon? He
gives us no clue to this, except that he winds
up his treatise by saying that the compressed
air bath will doubtless prove an available and
efficient means of arterializiug the blood, &#38; c.
It appears, then, that l)r. T. wants oxygen!
	But an atmosphere, to be wholesome for
tuherculous patientsaye, indispensable to
their curemust have a predominance of
nitrogen or carbon, with little oxygen, besides
being impregnated with salt.
	Does Dr. T., in his air bath, meet these
conditions? No, by no means! He will
rather injure tbau benefit the health of those
who are credulous enough to confide in the
air bath; he may, perhaps, cure an imaginary,
but never a pulmonary consumption.
	As my time and space are limited, I will
only give a few proofs of my assertion, from
the many which might be adduced.
	1. Experience teaches that a residence near
salt works, and the inhalation of the air with
the vapor from the boiling pans, have often
prevented and even cured consumption. M.
Sibert, who lived several years at Bex, near
the lake of Geneva, where there are extensive
salt works, remarks that he never knew a
laborer employed there become consump-
tive.
	2. heat has no effect, upon tuberculous
cachexy, as it is found alike in the temper~e,
frigid and torrid zones; but this disease has
been seldom or never observed in Iceland, In
the windy isles of Faroe, in the isles of Feejees,
in the South Sea, or in the desert surrounding
Oxenburg, inhabited by the Kirgesen, who are
entirely exempt from it.
	The atmosphere of Iceland is far from pure;
it is partly affected by the odors of decaying
animal substances, which lie in front of the
houses, and it is also more or less impregmsted
with particles of salt, which the sea breezes
here always carry along with them, and often
in such large quantities that, if a storm has
blown from the east only for a few hours upon
Westmannoe, the windows will be so com-
pletely covered with crystalhizations of salt
that one can hardly see through them. The
air is seldom clear, generally damp, and the
sky cloudy. This is the climate of Iceland,
where no pulmoasry consumption occurs, not-
withstanding the long winter, and although
the air is impregnated with particles of salt,
agitated by violent winds, and infected with
decaying substances, an~ where (as we see by
the medical literature) they intend to erect
hospitals for tuberculous persons.
	The atmosphere of the Isles of Faroe is like-
wise impure, containing, like that of Iceland,
many particles of salt, which will cover the
face with a thick incrustation if exposed in a
boat, even if there be no wind to dash about
the spray and foam. The air is less clear
than that of Iceland, the sky generally cloudy,
and a clear, serene sky is a great rarity. So
much for the Isles of Faroe, which are also
free from consumption.
	The descent of the Kirgesen surrounding
Oxenburg is traversed by a broad, sandy road,
called 1~ynpes1ci. These Rynpeski are sur-
rounded on all sides by a number of large and
small ponds and puddles of salt, which sub-
stance abounds to such an extent that fresh
water can only be found there in the spring,
and at high-water mark; at eM other times
these ponds contain salt water. When any of
them dry up, a stratum of salt, of various
degrees of thickness, always remains.
	Does not Nature here seem to indicate the
most effectual way for healing tuberches?
	I would recommend to Dr. T. the perusal of
a memoir of Dr. Tales Girons, (Re~sse Medi-
cole, 1856Tome II.,) in which he proposes
to the Academy of Sciences the erection of a
fontaine in a saloon, by whose small jets
of water the patients might enjoy the uniform
atmosphere of an artificial sea air. Such a
proceeding would at least be more scientific,
and perhaps of a more beneficial nature.
G.	GLEIwITz, M. D.

	Stratford, Conn., Sept., 1857.

A Cheap Barometer for Farmers.

	MEssRs. EDITORSThe barometer is a very
important instrument to the navigator, as an
indicator of the weather, but it is too expen-
sive an article to come into general use among
farmers. Those, however, who cannot afford
to purchase a mercurial barometer, can, in a
few minutes, construct a measurer, which,
for common observations, will answer every
purpose of a more expensive instrument. The
instrument now to be described, though very
rude and simple in construction, can be made
extremely sensitive, so that the least change
in the weight of the atmosphere will be in-
dicated by it. It consists of a very light scale
beam, to the shorter arm of which is suspended
some light bulky substance, of sufficient
weight to balance the longer arm. The beam
may be three feet in length, two-tenths of an
inch wide at one end, and tapering to a point
at the other. Eight or ten inches from the
wider end, run through a knife blade for a
fulcrum. Into the end of the shorter arm in-
sert a small hook, or bent wire, to which, by
means of a thread, suspend a block of very
light wood, a bundle of paper, a large piece of
cork, an inflated bladder, a pasteboard box
made air-tight, or, what is still better, a tin
can with the opening closed, to~ prevent any
ingress or egress of air. A small leaden
weight may be attached, if necessary, to the
longer arm, to balance the more bulky one on
the shorter arm. Let the knife edge rest up-
on some hard, firm support, after the manner
of a scale beam. Next prepare a scale of
equal parts, twenty inches or more in len~th,
divided into inches and tenths of an inch,
which suspend perpendicularly at the end of
the longer arm or index. The rising of the
index indicates change, or rain; its falling,
fair weather. If during the changes of the
weather, the index describes too large an arc,
lower the center of gravity by attaching a
small weight to the under side of the beam
near the fulcrum. When the instrument is
first set up, it will probably need regulating.
If it be set up on a rainy day, and the beam
be placed horizontal, the first succeeding fair
day will cause the index to descend too low;
or, if put in operation on a fine day, the first
rainy day will cause it to rise too high. By
observing its movements through several suc-
cessive changes, it will be easy to ascertain
the length of arc described by the index; and
by means of the small weight on the long arm,
it may be so regulated that the arcs above
and below the horizontal of the beam may be
the same. Let ths instrument be placed in
the cellar, or some place where it will be the
least affected by wind or temperature.
	The barometer above described, after a trial
of several weeks, has proved to be a faithful
indicator of atmospheric changes, and a true
prognosticator of storms. J. H. P.
	September, 1857.
	[No barometer is a perfectly reliable
indicator of the weather; but the described
device, if constructed with tolerable skill and
delicacy, will probably indicate all that the
mercurial barometer can, i. e., the condition
of the atmosphere with regard to its pressure.
The action of this cheap barometer depends on
the fact that all substances are partially
buoyed up by tIme air, and that this buoyancy
fluctuates with the changes of pressure. Were
the material at the two ends of the lever of
equal specific gravities, no motion would re-
sult~ from any change of pressure, however
great, in the surrounding air; but as that at
the small end is lead, and at the other a blad-
der, an empty bottle, or hight wood, it follows
that the change of buoyancy due to a change
of pressure in the air, is most sensibly felt by
the light body, and the equilibrium which was
before perfect becomes disturbed, and the lever
assumes an inclined position, the end loaded
with lead rising as the air becomes lighter,
and sinking as it becomes denser.

Curious Report Down soufis.

	MEsSRS. EDITORSI enclose you 28, and
a list of twenty subscribers, which I hope
will come safely to hand.
	You doubtless will think the above list quite
a falling off from that sent last year. I have
not got the time to hunt them up, and then I
find to my surprise the notion prevailing here
that the SCIENTIFIC AMERICAN has passed
into the hands of the proprietors of the Novelty
Works in New York city, and will be used for
their benefit, hence will not be as useful to
others as formerlya novel idea certainly.
What started the report, or where it originated,
I cannot tell; but I have taken the liberty to
pronounce it false.	P~. N.

	Athens, Ga., Aug. 27, 1857.
	Note.We thank our friend for the gene-
rous list of subscribers to our paper, and we
beg to assure him and all others who can pos-
sibly take an interest in th~ matter, that the
notion he announces as prevailing in
Athens, that the SCIENTIFIC AMERICAN has
passed into the hands of the proprietors of the
Novelty Works is wholly false. It is probably
sufficient for us to say on this point, that the
proprietors of this journal do not enjoy a
speaking acquaintance with either of the pro-
prietors of the Novelty Works; therefore the
bond of interest cannot be remarkably strong
between us and the parties named. The
SCIENTIFIC AMERICAN is the organ of no her-
son, no firm, no institution, on the face of the
earth. It is independent of all outside in-
fluence, and no living person has any control
over its columns except the three members
of the firm of Messrs. Muna &#38; Co.
	When we decide to yield the influence of
our journal to the control of outsiders, it will
not make much difference to us who gets hold
of it. For the present, however, we intend to
manage it as we have hitherto done for the
past twelve years.

Tempering Tools.

	MESsES. EDITORsIll regard to the best
process of hardening and tempering cast steel
tools, I am much obliged for your corrections.
That mere fresh water is the best medium,
and that the surest, best determined temper
for the generality of cutting tools, is obtained
by its use, is practically demonstrated in the
largest cutlery establishments in England and
France; but it is singular that I have never
seen it mentioned as an indisputable fact, that
if cast steel is overheated either in forging or
in the operation of hardenin~, that no inhee-
quent treatment can restore its cohesive
power. Blacksmithls, if you only attend to
this, you can make good t6ols of any kind,
even razors and penkaives. II. Z.
	Bloomsburg, Pa., September, 1857.

Artificial Marble.

	Last week we mentioned that M. Felix
Abate, of Naples, had recently discovered a
method of rendering plaster of Paris as hard
as marble, and of rendering it susceptible of
receiving a beautiful po1zsim. We now give
the process in full :lle ph ces the plaster in
a drumn turning horizontally on its axis, and
admits steam from a steane boiler; by this
means the plaster is made to absorb in a short
space of time the desired quantity of mesoisture,
which can be regulated with the greatest
precisiOmi. lX i di plaster thus prepared, and
which always preserves its pulverule. t state.
he fills suitable molds, amid submits thee whole
for a short time to the action of In hydraulic
press. When taken out of the molds, the ar-
ticles are ready for use. This process is sun
plc alid economical, the cost of time nrsnuiac
tare very little exceedilig that of the material.
The plaster thus prepared is perfectly lmard
and compact, takin0 tue polish of mamble.
The amost ilehiemite has-reliefs and highly
finished liledals may be produced from it with
thme same perfectiome as they have ill t lie origi-
nal. An experiemece of three years has shown
that productions obtained by theis process re-
sist thie most unfavorable atmospheric iii-
fluemices; it can therefore be employed as well
for w6rks in the CICCiC air as for flee interior of
buildings.

Dyeing Wools and Woo cue.

	R. A. Brooman, of tIme London Mechoisics
Mogazisie, has secured a patelit for a
compositiomi intended to be used ill dyeing
wools and woolens as a stebstinete for tartaric
acid, cream of tartar, and argol. The patentee
prepares stamimeic chloride by Inixing about 1~
oz. of bay salt, 8~ lbs. neuriatic acid, 2~ lbs.
nitric acid, and dissolves tin in time liquid thus
obtained. The comuposition for dyein~ is
snanufactured by dissolving one part of oxalie
acid in ten parts of hot water. It is then
stirred. One part of the stannie chloride is
next dissolved in ten parts of cold water, and
then stirred. He then adds, for every part of
the stannic cheloride, two parts of sulphuric
acid, stirs agaime, and wheeme the two solutiomes
are cold, neixes them together, stirs a ad leaves
them to settle for about twenty hours before
using. _____________________


Extracting Colorimig Matter.

	L. P. Kerdyk, of England, has imevemited nine
apparatus tbr extractin~ coloriar matters
whicle consists imm an interior case or cheamber
covered evithi evire cloth and perforated plates,
&#38; c., nmmd revolvimeg at a leigh velocity, inclosed
in amm exterior chianiber or case. lhee pul-
verized wood or root is placed in tile ileternal
chaneber, and rotary motion being imparted
theereto, water is imitroduced, being drivems or
filtered out by centrifugal force through the
sides of the case, amed tIme insohehelo mecatter re
meenining behind is removed when requisite.
The liquid theus separated mecay be passed imito
the dye, and out through the neachimme again,
ammd so on, as ofteme as meecessary, until the
color is sufficiemmtly extracted fromn the roots.</PB>
<PB REF="IMG00016" SEQ="0016" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="12">






Witherells Monkey Wrench.

	The accompanying cut represents a very
convenient wrench, patented by 0. 0. Wither-
eli, of Danville, N. II., on the 2d of December
last. It is capable of assuming either the
novel condition in which it is represented
serving as a fork wrench, or of heing changed
to the general form of an ordinary screw
wrench.
	A is the handle, and B the shank fixed
thereon. C is a spring riveted to one side of
B.	D is a crooked lever influenced by the
spring, hut which can be readily operated by
the thumb. E is what may, but with ques-
tionable propriety, be termed the fixed jaw. F
is a pin, by which E is secured to B. G is
the movable jaw, and G a sufficiently long
rectangular shank, which passes freely through
a corresponding opening in E. The lever, D,
is urged by the spring, C. into such position
that it pinches and holds the shank, G, very
firmly in its position.
	In order to change the wrench to the form
of an ordinary one, in which the jaws, E and
0, project from the side, it is simply necessary
to apply the thumb to D, and remove the part
0 altogether, after which the jaw, E, may be
turned quarter of a revolution on the pin, F.
and G again inserted. The space between E
and G may also be increased and diminished
at pleasure after simply depressing D.
	For further particulars the inventor may be
addressed as above.

Improved Ilousiny Machine.

	Hominy is a favorite dish with many, espe-
cially in the Western and Southern States,
and a simple machine which will hull and
clean the corn without breaking or mashing
the grains is a valuable invention. The inven-
tion here represented does this with such per-
feetion that the dish of hominy, when properly
cooked, macIs resembles the white swelled
surfaces of nicely prepared pop corn.
	The grains are fed into the small end of an
horizontal and slightly conical ease, on the in-
terior of which is rapidly revolving a drum of
somewhat smaller diameter. The drum is
covered with projections or beaters, nnd the
interior of the case is provided with nearly
continuous rings extending inward nearly or
quite to the surface of the drum. The grains
under the action of the heaters, and aided by
~gravity, gradually work through the space
provided by the want of continuity of the	 Fig. 1 is a perspective view of ~ahe machine	        American Ingennity.
rings, and finally escape thoroughly hulled at	complete; Fig. 2 a longitudinal section, and	  Last week we published a list of five
the large end of the machine.	Fig. 3 a transverse section of the important	cases or which petitions are now before the
		Patent Office, asking that certain patents may
	MAYHEWS HOMINY MACHINE. be extended for a period of seven years. By
reference to the last number of the 12th volume
of the SCIENTIFIC AMERICAN, it will be seen
that twenty-six patents were extended during
the past Year; thus showing that although
many iti prove unprofitable, and often-
times, perhaps, for want of proper manage-
ment, involve their originators in a complica-
tion of disasters, yet, in a majority of cases,
we fire inclined to think that the patentee
either parts with his right for a snug sum of
money, or engages in the manufacture and
sale of his improvement, and thereby secures
for himself not only a good, but also a profit-
able and permanent business.
	The fact that so many patentees are always
anxious to get their	to
	patents extended, goes
strengthen the position we have assumed,
that patented inventions are not by any means
so gets erally unprofitable as many suppose. A
cotemporaryjustly remarks, that notwithstand
sag a prevalent opinion to the contrary, so
many inventors have acquired ample fortunes
by their science, skin and intellect, that every
poor man with a taste for mechanics hopes
to inset with equal good luck. The earliest
inventors undoubtedly had rather a hard
time of it, but they were few in number;
however, they must be honorably regarded as
pioneers. Still, even in the infancy of dis-
covery, many able men were amply repaid for
their toil, not only in honor, but in hard cash;
and in these times, the originator of a labor-
saving or money-saving machine of merit
a machine which does really save labor and
money, and actually reduces the cost of social
necessariesis pretty sure, if he ho decently
prudent, of liberal compensation for his paimis.
Most prominent inventions of a thoroughly
useful character, made in this country, have
amply repaid their originators, v; other they
were those of a self-acting mule, a revolving
pistol, a carpet-loom, a coal-burning locomo-
tive, a reaping machine, or a rotary press.
This fact undoubtedly stimulates ingenuity,
but this will not alone account for the requisi-
tion which this country makes upon its inven-
tive talent. It is because we have an ins-
I mease demand for asanufactured cotton, that
we have brought the machinery necessary for
Its production to perfection; and it is because
we have great crops, defying the profitable
use of the scythe or sickle, that we have the
beautiful machines which now so wonderfully
facilitate the operations of agriculture.
	The statistics of the Iatent Office alone
show something more than that we are merely
an ingenious, contriving set of whittlers and
jackknife adepts. lt is true, however, that
there is always a class of more or less really
ingenious men, who are continually racking
their brains to construct perpetual motions,
flying machines, and inventions of like
character, without the slightest probability of
success, when, if tIme same amount of time
was spent in scheming out useful improve-
ments, such men would undoubtedly accomn-
plish some good object for themselves, and con-
fer an equal benefit upon the community.
parts. A is the case or concave which may at the small end of B, but which are distri-
be of wood in either one or two thicknesses buted over its whole surface except at those
lined with metal. B is the drum or conical parts opposite the rings C. E is the receiving
cylinder, and C the rings fixed in A N. spout, F a feed screw, for which may be sub-
Fig. 3 shows the opening in C through which stituted the common shoe and damsel, if pre-
the grain finds its way at a proper rate, regu- ferred. II is the hopper, I the pulley by
hated by means explained below. D repre- which F is turned, J the pulley which imparts
seats the pegs or beaters which are only shown motion to I by a belt, and K and L are fast
and loose pulhies on the ~haft of B, by which
it is driven. F is a 5( reen through which
any dust may be discharged. P represents an
adjustable strip let into the lower side of the
case A, and on which are fixed plates 0, 50
that when P is raised by the thumb screws, II,
to its highest position, the plates 0 nearly or
quite ~io~ all ~io ~jeniags, N, in the rings C.
By lowering P to the proper extent, the grain
may he allowed to pass from the small to the
large end of the machine as rapidly as may be
desired.
	This invention ~ as patented on the 2d of
June last. For further information, address
the patentees, Messrs. Weeks &#38; Mayhew, In-
dianapolis, Ind.

Treatment of Gutta Perelsa.
The Awards for Reaping Machinefi.

	The following are the awards for the reap-
ing machines at the trial at Syracuse in July
last C. H. McCormick, Chicago, gold
medal; Walter A. Wood, Iloosic Falls, N. Y.,
silver medal; Warden, Brokaw &#38; Child,
Springfield, Ohio, bronze medal; and Jona-
than Ilaines, Pekin, Ill., diploma.
	For reapers and mowers combined, the fol-
lowing awards were made :Walter A. Wood,
	F. Rider, has made a new iniprove-
meat in Ow treatment of gutta percha,
by the addition to sixty-six parts of that gum,
of one part of sulphur; and one part of hith-
arge, prior to the exposure of the same to the
action of from 2350 to 2450 Fab. for the pur-
pose of expelling the volatilizable ingredients Hoosic Falls, N. Y., gold medal; Dan. Os-
therefrom, and the after process of vulcaniza- borne, Bu~alo, silver medal; Warden, lire-
tion of gum so prepared by subjecting the kaw &#38; Child, bronze medal.
same to a heat of from 2M0 to 2650 Feb.	The awards for mowing umachines have not

 -~~~.-~-----	vet been made.
	M.	Doy ere, of Paris, has proposed a method	- ..
of keeping grain sweet and undecomposed for Judge Curtis has resigned his seat as one
any length of time, by subjecting it to the of the Justices of the United States Supreme
action of the vapors of a volatile liquid called Court. He is ams able lawyer, and well versed in
the bi-sulphide of carbon. the knowledge and practice of the patent law.
12</PB>
<PB REF="IMG00017" SEQ="0017" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="13">



~dcntifh~ Au~tican+
~cientif~c~	xierican+
II
	 
NEW YORK, SEPTEMBER 19, 1857.

Important Facts Concerning the Telegraph

CableLetter from Professor Morse.

	The New York Obserrer publishes a letter
trorn Professor Morse, the Father of Magnetic
Tele,~raphs, who was on board of the Niagara
at the time the cable parted. I-Jo lays the
blame of the accident directly upon the en-
gineer, Mr. Bright, while that gentleman
transfers it with equal directness to the
mechanic who. he says, was temporarily left
in charge of the brakes. Professor Morse
says

	At 345 in the morning, tat. 520 30,
long. 170 30, Mr. Bright, the engineer,
went on deck; our ship was going at the rate
of four miles two fathoms per hour, and the
cable running out at a greater speed, perhaps
at the rate of live miles an hour. Mr. Bright
spoke to the man in charge of the brakes,
asking him what strain was upon the cable,
t(i which the answer was returned, about 3000
peumids. Mr. Bright directed him to put 100
Imounds of more force upon the brakes, to
check the speed of time cable. This was de-
murred to by the man for a moment, who ex-
pressed a fear that it would not be prudent.
Mr. Bright, however, perserered iss his orders.
The brakes were applied with the additional
force, which suddenly stopped the wheels of
the paying-out apparatus, and of course
brought the force of the unchecked speed of
the ship as an addition to the strain. At this
time, too, there was a moderately heavy sea,
which caused the ships stern to rise several
fcet, and to the same degree to fall; when
the stern fell, the ~able, under its immense
strain, went down into the water easily and
quickly, l)ut when the stern was lifted by the
irresistible power of the succeeding wave, the
force exerted upon the cable, under such cir-
cumstances, would have parted a cable of four
tinses the strength. Henee it is no wonder
that our cable, subjected to such a tremen-
dous and unnatural strain, should snap like a
pack-thread. It did snap, and in an instant
the whole course and plan of our future pro~
cee(hings were of necessity changed.. How
	many visiomi s of wealth, of fame, and of
pleasure were dependent for their realization
	on the i tegrity of that little nervethread,
	spinning out like a spiders web from the stern
of our noble ship, and (in view of the mighty
force of steam, and waves, and winds, and
mechanism, brought to bear upon it,) quite as
frail! Yet, with all its frailness, nothing
could exceed the beauty of its quiet passage
to its ocean bed, from the moment we had
joined it to the shore end until the fatal mis-
take of Mr. Bright, which caused the breaking
of it asunder. The effect on ship-board was
very striking. It parted just before daylight.
All hands rushed to the deck, but there was
no confusion; the telegraph machinery had
stopped; tile men gathered in mournful groups,
and their tones were as sad, and voices as
low, as if a death had occurred on board. I
believe there was not a man in the ship who
did not feel really as melancimoly as if a com-
rade had been lost overboard.
	If Professor Morses statement is correct,
Mr. Bright is evidently not bright enough to
lay a telegraph cable. This fatal mistake,
taken in connection with other blunders, such
as the acknowledged unsuitableness of the
payin~-out machinery, the wrong twisting of a
portion of the cable, the first breakage of the
cable soon after starthig, when two miles out
froum shore, and the want of sufficient intelli-
gent asssistance to pay out the wire on hoard
the Niagosathese things seem justly attri-
butable to the want of capacity in the super-
intending engineer. We have no doubt that
Mr. Bright did the best he knew how. But
he does not seem to have possessed the c-a-
r ~ pacity to manage an enterprise of this magni-
tude. We trust he may be able to show that
he was not at fault in the matter.
Professor Morse makes another most im
portant statement in regard to the cable. He
says
	We got an electric current through till the
moment of parting, so that the electric con-
nection was perfect ; and pet the further we
paid out the feebler were the rrents, indicating
a difficulty, which, however, I do not consider
serious, while it is of a nature to require at-
tentive investi0 ation.~
	We believe that in all of the published
official statements the company have not inti-
mated that there was the least difficulty in
the electrical transmission. On the contrary,
the public have been led to understand that
the whole experience gained in this attempt at
laying the cable, tended to demonstrate the
certainty of final success.
	But 1~rofessor Morse, with a candor which
all must admire, admits the existence of a
difficulty of a very serious character, and one
which all the glorification of the company
cannot remove. If the electric current grew
sceakc-r and weaker during the paying out of
the first 384 miles of the cable, how strong or
how rapid is it probable that the transmission
would have been after paying out 2,000
miles?

flow, to lilake Oil of Vitriol.

	The thousand and one uses to which oil of
vitriol, or sulphuric acid, is put in this and
all countries, cannot fail to render some ac-
count of it interesting to every one of our
readers. First, then, what is sulphuric acid?
Chemically it Is a compound consisting of one
equivalent of sulphur and three of oxygen,
and is written SOS. Some chemists, however,
hold the theory that there can be no acid
without time presence of hydrogen, and from
all experiment this idea seems to be the cor-
rect one, and they write it IISO~, i. e., one
equivalent of SO~ combined with one equiva-
lent of water, which is a compound in equal
proportions of hydrogen and oxygen, and is
written HO.; and, moreover, as the compound
SOC has never been obtaimmed in any but time
gaseous state, and then it exerts no acid re-
mtction, HS0~ or SOSHO Is the received
symbol for oil of vitriol. Its physical pro-
perties are a yellowish white, oily-looking
liquid, having a strong neid taste and smell,
capable of mixing with water, and has a
specific gravity of 1-9. The chief uses are
the solution of indigo and the manufacture of
various clmemical salts, and the method of
manufacturing it is as follows :Jn tIme United
States, where pure sulphur is comparatively
cheap, it is burnt in large kilus, and the re-
sult of this combustion is a gas called sul-
phurous acid, having the composition S02,
and this is conducted into large leaden chain-
hers, where it meets within a jet of steam and a
quantity of nitric acid in tIme gaseous state,
from which it takes up one equivalent of
oxygen and falls down to the bottom of the
chamber as liquid sulphuric acid, having a
specific gravity of about 1-2 (having obtained
the water from the steam); it has then to be
concentrated by evaporation in either leaden
or platina vessels to the required strength.
The nitric acid gas is obtained by heating to-
gether a quantity of common nitre or nitrate
of potash with sulphuric acid, and the nitrous
gas is given off, while the sulphate of potash
remains, which is chiefly used in medicine.
	This is a brief outline of the manufacture
as it is generally described; but practice has
rendered some important changes necessary to
produce it at a price sufficiently low for the
consumer, and in England this cheapening
process has been carried to a still greater ex-
tent. In the great districts of the chemical
worksnamely, in and around St. Helens in
Lancashire, and Birminghamthe method is
as follows :In consequence of the dearness
of pure sulphur, some compound which would
burn easily and was cheap and in abundance,
had to be obtained, and this was readily do~
in that class of minerals known as pyrites,
which are a compound of some metal (usually
iron or copper) and sulphur, and contain from
30 to 60 per cent. of the latter, and as this
is very abundant in almost all parts of the
world, and hitherto of no use, it proved to be
the very thing required, so that by a slight
modification in the construction of the kilus
or furnaces, it was found to burn as well as
pure sulphur, and has consequently been used
ever since. Certain precautions in the regu-
lation of the draft have to be taken to prevent
it from fusing and caking into a cinder, which
would of course stop the combustion. The
gas which is the result of this is the same as
in time case of pure sulphur, and is treated the
same way. There is, however, a mass of
matter left in time kilmin which needs to be
cleared out, viz.: the pyrites, now no longer
useless compounds of sulphur with iron and
copper, but oxides of those metals, ready at
once for the further processes of the smelter,
and in many instances the copper which is
extracted from these burnt pyrites pays for
the manufacture of vitriol. Another change
is timat nitrate of soda is used, or, as it is
called, soda-niter, which is imported from
South America, as it is much cheaper than
the potash-niter, it being worth about 4 per
cwt. in England, and the potash more than
twice that sum. The result is time same,
namely, nitrous gas, which is conveyed into
the lead chamber within the suiphurous gas
and a residue of sulphate of soda, which is
used in making soda-ash. The part which
nitrous gas plays in the chemical changes
from suhphurous to sulphuric acid is as vet
scarcely understood, but it is supposed to be
but a kind of transferring action, or, in plain
terms, that it is the commission a0ent between
the mnoist air in the chansher which has
oxygen to spare and time suiphurous acid that
is in want of oxygen. The idea is that it
undergoes no real chammge itself, but is con-
tinually giving up oxygen to the acid and
taking it from the air. Experience, however,
shows that this is not true, for if the continual
supply of a small portion of fresh nitrous gas
is not furnished, it becomes robbed of all its
oxygen and the process stops; so that our
opinion is tisat it exerts not emily a transferring
and carryimmg action, but also a very powerful
chemical action wimen present in exactly the
riuht quantity, which can only be understood
by long experience in time manufacture.
	There are many points to be noted iii time
various processes, which need only be men-
tioned to show that we are not unmindful of
them; but nothing short of practice can of
course familiarize them to the inquirer: time
regulation of the draft to time kilns, the depths
of the fire in the kilus, the color of the gases
in the lead chamber, and the specific gravity
of the liquid at various stages of time process,
which, by the way, is a continuous one. This
is a general and cursory description of the
manufacture of oil of vitriol, and of course
has only given a general and popular descrip-
tion of time process.

The New Commissioner of Patents.

	We announced iii our last number that
Joseph Holt, Esq., of Kentucky, was tendered
the office of Commissioner of Patents, and
promptly declined it. It now appears that he
has reconsidered the matter, and finally ac-
cepted the appointment. He entered at once
upon the discharge of his duties, and is now
busy in making himself acquainted with the
details of his new position. Mr. Holt is a
lawyer, and for many years practised his pro-
fession in Mississippi, where he distinguished
himself, and took rank with Prentiss, McNutt
and others. He was at one time Prosecuting
Attorney, but has never, we believe, held any
other public office. He is a brotimer-in-haw of
Senators Yulee and Wright.
	It is stated in one of the daily papers that
Mr. Holt contemplates several removals among
the Examining Corps. We think, however, that
this announcement is premature, as we pre-
sume he has not had time even to consider
this matter at all, and will not, until he shall
have become better acquainted with the de-
tails of his office. At the proper time, no
doubt, he will be called upon to inquire into
the fitness of some of time examiners, as timere
is an urgent necessity that this should be done.
	We shall probably recur to this subject
again, but at present we have no desire to dis
turb the new Commissioner with any matters
which may in any degree interfere with his
expressed determination to become master of
his new duties.
	We cordially wish Mr. Holt success, and
shall take pleasure in extending to him every
possible aid in our power, in his endeavors to
make the Office more and more the smursery
and protector of Americams genius. To do
this successfully, Mr. Ilolt must be the Com-
missioner of Patents, and not permit himself
to be wheedled Into the notions and whims of
examiners or officious patent agents.
	It was one of time peculiarities of Judge
Mason that he patiently listened to suggestions
from all, without permitting himself to be nim-
duly influemmeed by them. If, him the multitude
of counsel there is wisdom, so also is there
mischief, if visionary theorists and impracti-
cable schemers are permitted to gain their
ends.

Epidemic in the Money Market.

	There seems to be just now a sonmewimat
anxious panic in reference to money matters.
The failure of a trust company and a few
banks of a minor character has scattered dis-
may and confusion into business circles. The
public mind is excited, arid a general distrust
seems to have seized upon time people, whmicls,
epidemiclike, must Imave its course.
	Confidence being time moahi-spring of all
business transactions, we could no more suc-
ceed witimont it thams could an army desti-
tute of mnunitions, comiquer a well equipped
enemy. From present appearances, time worst
is over, and we hope within a few days to see
the financial machinery once more in geam,
and working with its accustomed steadiness.
In the face of such immemise crops as have
been garnered, there nc be no real cause for
alarm or distress. It is unfortunate that the
ruinous effects of these financial excitements
fall most disastrously upon those who are
least able to bear them, and who have had
he st to do in bringing them about.
	We continue, as usual, to receive bills 051
any of the solvent banks, North, South, East
and West, in payment for subscriptions. Our
friends everywhere seem to he working nobly
for their favorite paper and we hope to in-
crease our subscription list five thousand at
least. We have commenced the volume within
a much larger edition than usual, and hope to
continue it to its close, so that all new sub-
scribers may get the numbers from the com-
mencement.
	On the 1st of January next we shall dis-
burse One Timousand Five Hundred Dollars in
cash to the orders of the successful competitors
for our premiums, as announced in our Pros-
pectus.

Fire-proof Dresses.

	Many ladies isave been burnt to deaths by
thineir light gauze and cambric dresses taking
fire and blazing up before timere was time to
extinguish the flame. Actresses and dauseuses
are most hiabie to this, and the talented Clara
Webster and others lost their lives tisis way.
It ought, therefore to be generally known
that by steeping the dress, or material com-
posing it, in a diluted solution of chloride of
zinc, it will be rendered perfectly fire-proof.
Our manufacturers should take the Isint.

	The Fair of tIne American Institute opened
on the 15th inst. at the Crystal Palace. It is
worth a visit from all, and we hope timere will
be a successful run of quarters into its receiv-
ing till. We shall commence our reports next
week.

	A submarine telegraph cable of 150 miles in
length is being laid from Cagliari, on the
Sardinian coast, to Bossa, 015 the coast of
Africa, thus making Europe us electrical rap-
post with the islands of the Mediterranean and
the contlisent of Africa.

	It is a common umistake to call electricity a
fluid. It is mmot a fluid, for with that we con-
nect the idea of matter, and as electricity is
not matter, the proper term is electrical force.</PB>
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Feats of Fire-aru~s.

	We have received a second interesting ac-
count of the results of other experiments with
breech-loading fire-arms, recently made at
West Point, N. Y. Our correspondents re-
sume runs thus
	Next came Mr. Soules gun. It was either
a chamber or a breech-loader. A sectioa of
the bore of this gun, slightly enlarged, slid
vertically down, received its cartridge from
behind and beneath, and then sliding up again
to its place, cut off the rear of the cartridge.
As might have been expected, it did not do
good shooting, an d fouled from escape of gas
both before and behind the section.
	The next competitor was Dr. Maynard, of
Washington, the inventor of Maynards
primer. I-us gun was a neat little piece of
six pounds wei~ht, but of under caliber. He
tilted up the breech of the barrel, put in a
metal cartridge, and lowered the breech to its
place again. The shooting was only tolerable.
	Lient. Symmes gun came next. It is a
breech-loader, lie drops a piece downward
aronnd a loose hinge under the breech of the
barrel, puts the cartridge into the barrel, and
fbrces it up to its place by again closing up
the swinging piece. This swinging piece con
taitis a plungerhammer and a spiral wire
spring and screw behind, to feed up as it
wears. lhis plunger strikes the cap, and the
fire passes throu~b a strai0ht canal to the
charge; that canal closing against any escape
of gas afterwards. The plunger is managed
by a projection within the guard. Of course
it has no lock. It was first fired on Thurs-
day (3d), but owing to the failure of the
clutch which holds up the breech, the firing
was renewed after repair, next day. The fir-
ing was first-rate, being the best next to Colt.
	Thus far, then, in the order of merit, the
breech-loaders stand as follows: 1st, Symmes;
2d, Gibbs; 3d, Sharps Co., &#38; c. It is proba-
ble that one or two more guns may yet be
tried before the Board, but they are inconsid-
erable. The Board have authority to visit
Springfield Armory, and other private armor-
ies, &#38; c., and next week they will do so. t
	In addition to the above we have also been
furnished with the official list of names of
competitors, written in the order in which
their arms were to be submitted, as set down
by the War Department.
	1.	John F. Sherman.	15. lIes &#38; Co. fbr (1. Smith.
	2.	1. C. Symmnes.	11. A. V. ilefer.
	I.	IL. Gross.	12. William C. Freeman.
	4.	Geer~e ~T Morse.	11. Merrill, Lathrope &#38; Ce.
	5.	Samuel Colt.	14. C. Sharps &#38; Ce.
	6.	John P. Schenkl.	11. Jaroh Stew.
	7.	L. 11. (Jibba	16. A. E. Barusides.
	5.	George Patten.	17. Lemuel Wells.
	I.	11. V. i)switt.	18. Sharpss Jiifle Co.

	Several of the above inventions were pat-
ented in this country and in Europe through
our Patent Agency, and have also been illus-
trated in tile SCIENTIFIC AMERICAN.

	The number and celebrity of the competi-
tors, the superior quality and great ingenuity
of the gnus, the acknowledged competency of
the military judges, aud the serious import-
ance of their decision, make the result of the
above trial of arms an event of the deepest in-
terest, not only to the army but to the Ameri-
can public generally. The official report will
be looked for with interest.

New Method of Propimisiom,.

	Io propel a vessel, it is necessary thlat the
propelling apparatus should grasp either the
water, the earth or the air. Oars, paddles,
paddle-wheels, screws, and all the multitudin-
ous forms of ordinary and extraordinary pro-
pellers which act on the water, are similar in
one respectthey urge the water backwards,
and by the re-action or resistance thereof urge
the vessel forward. The primitive method of
moving boats by poles, one extremity of which
lIre planted on the bottom, is still employed
with great effect in moving rafts, scows, canal
boats, and the like lleavy masses, and this is
almost tile only example in common use of
tile second class of propellers. Propulsion by
actin~ on the air is still more rare, and al-
thion0h, by a stretch both of language and
logic, the imalense ilumber of sailing vessels
may possibly be supposed, in seine sense, to be
nioved by such propulsion, it is evident that
the action of sails is very different from that
of propellers proper. The sails simply receive
time impulse of air in motion, while a propeller
proper is active, or produces a dynamic effect
on time medium in which it is placed. Tllomas
Silver, of Philadelpimia, proposed, a few years
ado, to move boats in shallow water by caus-
ing a steaul ellgimle to revolve a windmill, or
hu0e screw, of higilt materials, mounted above
the deck, and wilich should urge tile vessel
forward by its action on the air alone. Tilis
is the only example of this kind of propulsion
within our recollectioii at this muoment.
	Altimough we have referred to poling as the
only example of the second class of propellers
en common use, there have been employed, to a
limited extent, forms of propellers which, act-
onward, soillewbat in a manlier analonous to
the motion of a locomotive. The frame allows
the wheel to rise and fall to accommodate it-
self to the inequalities of the bottom.
	A is the boat, and B tile first motioll shaft.
C represents a crank on tile extremity. 1) D
represent radius rods, which extend from the
shaft B to the shaft of a Ilcavy wiled, E, at
tile bottom of tile stream, forming a frame for
tile support of tile same; allowing it to rise
aIld sink at pleasure, but compelling it always
to maintain a uniform distance froul the shaft
B. F F represent cranks on the silaft of B,
and G G are connecting rods, whiell extend
from tile pins of the cranks C C to tIle pins of
the corresponding cranks F F. Tile two
cranks C C, being set at right alIgles to each
other, enables one to work with full effect
while the other is at its dead point, so tilat the
power is conveyed quite uniformlythe two
cranks F F being of course necessarily set in
tile same manner. H is a curved rod, lvhicll
is mounted between the radius rods D D, and
connects to them by a stout fastening, H. It
travels up amid down through the guides I and
J, winch unides are fixed Oil the bow of the
vessel. This device supports tile frame latter-
ally, and ensures that the alacilinery be kept
perfectly in line, while it allows tile frame to
work freely up and down. K is a windlass
mounted on the deck, by which the whole
may be elevated when net wanted for use. It
also serves to prevent the frame and wheel
from dropping into a vertical position when
the boat chances to move into very deep
water.

	All propellers wilichi act on a yielding me-
dium, as air or water, lose a portion of their
effect by the slip, as it is termed, or back-
ward motion of the fluid. But propellers of
the class to which this belongs, where tile
wheel has a firm held of the bottom, lose no
power from sucil cause, and the wimole power
of tile engine, minus that absorbed im~ friction~
is expended in moving the vessel forward. It
is most valuable in rapid streams, where by
this means a slow motion of tIle engine ensures
a moderate motion of the boat agaimist the
curreilt, an effect which could inlet be produced
ing on tile bottom, have urged vessels forward
by the aid of machinery in the boat. The
device under consideration is one of that class,
amId is the invention of J. W. Wetmore, of
Erie, Pa. It is secured by patent dated
June 16, 1857. The mnacidnery within the
boat may be a steam ennine of any ordinary
character. The power is employed in giving
a rotary motion to a shaft resembling the shaft
of paddle-wheels, but the emmds, instead of
wileels, carry simply cranks, from the pins of
wilich the power is carried by connecting rods
to corresponding cranks, on the shaft of a
wileel below. This latter wheel is mounted
in a frame, and allowed to rest on the bottom
of the river, and to take hold of the same by
teeth, so that as it revolves it drags the vessel
by paddles working in time current itself; ex-
cept by giving a very high velocity thereto.
A slow motion of such paddles would not be
sufficient to overcome the current, and the
boat, although moving moderately though the
water, would be actually moving backward
down the streamn.
	For further information, the inventor may
be addressed at the above place.

American Farmers should be Intelligent.

It is pretty generally understood that time
mass of American farmers are penny wise
and pound foolish in many things, and in-
stead of working their farmns on approved
principles, they choose to plod along as timeir
fatilers did, and are consequently not up to the
modern agricultural standard. Time Southern
Fa es, an excellent journal, published at
Petersburg, Va., very justly remarks that omme
of tIme ulany means of improvement within
the reach of our farmers is a journal that will
keep theal posted iLl regard to the progress of
mechanical inventions, particularly as relates
to tile application of these inventions to agri-
culture. The nualber of new ismplements
brought out every year by time ulecilanical
genius of our countrymen will appear almost
ularvelous to those who are not at the pains
to obtain correct information on the subject.
And for the farmer to pursue his calling in-
telhigemitly, so as to grow his crops at the least
possible expenditure of money, he should be
willing to encourage and accept every im-
provenlent calculated to diminish the amount
of manual labor. In the course of time, and
that not very distant, judging from the past,
we have no doubt that our fields will be plow-
ed by the agency of steam. Every year it re-
quires an increased amount of the productions
of the earth to supply the necessities and
luxuries of man, and these wants must be met
by the introduction of new appliances. To
every farmer, then, we would recommend the
S~ENTIFIC AMERICAN as a paper from which
he may derive the most valuable information.
It is a journal of high character, reliable in its
statements, familiar with the progress of the
times in all the practical departm eats of
science, and enjoying a wide circulation.
Impor~an~ IuqmMry about Iron.

	The Secretary of the Treasury has issued to
the iron manufacturers of this country the
following important circular, from whicim a
body of information is likely to be derived of
incalculable value to the country. It is be-
lieved that the United States produce iron in
some localities which oxydizes less rapidly
than the iron of any other country
	I.	TREASURY DEPARTMENT,
		    August 31, 1857.

	SIRThis department Imas been furnished
with undoubted evidence that there is a great
difference between irons from different mines in
the United States, in time degree and rapidity
with which tiley become oxydized. Congress,
during time last session, appropriated tile sum
of $2,500 to test the different irons in this
country in that particular. If these experi-
meimts shall establish the important fact timat
we, have irons entirely or nearly proof against
the corrosion of oxygen, it will multiply time
uses of such iron to a very considerable extent
for purposes to which it is now applied, and
give it the preference over other iroils for
many purposes for which iroml is now used.
	The very large extent to whicim this material
ms superseding the use of wood nild stone in
public buildings, erecting at a cost of many
millions of dollars annually, under thus de-
partment, renders it of the greatest importance
to know what irons resist for the longest
period the action of oxygen.
	I have, therefore, to request that you will
forward to this department, by mail or ex-
press, two or three small samples of iron ammd a
sample of ore from each of the mines worked
by you; the samples of iron not to exceed a
quarter of a pound each, and the ore not to
exceed a half pound in weight. I would also
request information on the following points,
viz.: The extent of the ore deposit, facilities
of mining ore, its distance from furnace, and
distance of furnace from market, and mode of
transportation thence; the fuel used; relative
cost of charcoal, coke, bituminous and anthra-
cite iron; kind of flux and its cost, etc.; the
capacity of time establishment, and the amount
of iron produced during the last year, and
what it would be capable of producing under
a ready sale and remumlerating prices; any
peculiarity in the iron produced ; whether
there are rolling-mills in the vicinity, and
what descriptions of iron they roll; to what
purposes most of the products of your furnaces
are applied, and what description of iron the
establishment mostly produces; when did
your works first go into operation; what has
been the annual production, and what the
ruling prices each year since your works were
started. You will please give the State and
county in which your iron mine is situated,
and the distance your fuel is transported. As
it is the intention of the department to furnish
you with the result of the experiments, you
will please name the post-office through which
to address you. If you know ol any one in
tlle iron business who does not receive a copy
of this letter, and forward his address, one
xviii be sent to him. You xviii realize the
value of the information when you reflect upon
the growin~ importance of the iron interest of
the countrya fact attributable, in no small
degree, to the introduction of iron as a substi-
tute for other materials in our public build-
ings.
	The policy of affording encouragement to
this great interest, by promoting its production
and increasing its consumption, has been com-
menced by the government, and I am desirous
of obtaining all the information which can
be had on the subject, with a view to its fur-
ther development.
	It is believed that there xvill be not only a
willingness, hut an anxiety, on the part of
every one to advance the object which the

department has in view.
	I am desirous of obtaining time information
asked for at the earliest practical moment.
Very respectfully,
Your obedient servant,
hOWELL Coimn,

Secretary of the Treasury.	I I
WETMORES NETFJOD OF PROPULSION.</PB>
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~cicntific ~nicrican+
W., of Ohio, $20; A. B. D., of Coun., $30; F. &#38; M., cf
N. Y., $55; N. A. P., of Tenn., $25; L. &#38; B., of Mass.,
$25 J. P., of Wis., $15.
Specifications and drawings belonging to parties with
the following initials have been forwardedto the Patent
Office during the week ending Saturday, Sept. 12, 1057:
F.	P.S., of N.Y.; J.G.ll.,ofN.J.; O.L.C.,of
IlL; S. E. B., of Coun.; C. T., of MiciL; S. B., of Ill.;
D.	H., ofKy.; A. C., of Pa.; G. II., ofN. C.; 11. A., of
Md.; P. A., of Me~ HE ofN.Y.; B.G.P.,of
T. &#38; B. M., of PaThe sale of a patented machine N. c.
docs uot Jvo the purchaser a right to use it, unless un-
der a liceuse from the patentee. Of course the patentec
could recover damages of von, and stop your using the TERMS OF ADYEETISING
machine. it matters not whether the party who sold Twenty-five cents per line each insertion. We re-
the machine was solvent or otherwise; you could re- spectfully request that our patrons will make their
cover nothing from him, because you got all you advertisements as short as possible. Lugravings cannot
bought, which was time machine. Ii was for you to have be admitted into the advertising columns.
found out whether you could use it not, before pur- All advertisements must paid for before in-
chasing. serting.
	A.	M. C., of MoWe think that for many sections of
time country where lunaber is scarce, and the facilities IMPORTANT TO INVENTORS.
for obtaining brick are not good, Fowlers plan for AMERICAN AND FOREWN PATENT
building Imouses may be very good. We would LI. SOLICITORSMessrs. MUNN &#38; CO., Proprie-
advise you to write to Messrs. Fowlers &#38; Wells, of this tors of the ScIENTIFIc AMERICAN, continue to procure
had practical experience patents for inventors in the United States and all for-
city, concerning it. They have	eign countries on the umost liberal terms. Our experi-
in the imiatter. Mr. STehls lives in a house of that kind,	ence is of twelve years standing, and our facilities are
we believe,	unequaled by any other agency in the world. The
	long experience we have had in preparing specifications
 .1. II., of 111.We are glad to hear of your good sue-	and drawings has rendered us perfectly conversant with
coos in introducing Iiallidays wind-mill in the West,	the mode of doing business at the United States Patent
lint regret to learn that our neighbors sacrificed ~o Office, and with most of the inventions which have been
patented. Information concerning time patentability of
nmucim on time wind-null scheme in which they were in- inventions is freely given, without charge, on sending a
tereoted. It does not look very well for Patent Attor- model or drawing and description to this office. Con-
sultation may be had with time firm, between nine and
nice, ohio have other people business intrested to them four oclock daily at their principal office, 128 Fimiton
for prosecution, to be engaged in the sale of patent street, New York. Our branch offices are corner of F
rights; and when we engage In it, we shall relinquish and Seventh streets, Washington, 1). C.; No. 66 Chau-
cery Lane, London; 29 Boulevard Saint Martin, Paris,
our migency for time irocuration of patents for other per- and 3 Rue Tlmerrsienne, Brussels. Circulars of informa-
somis, and mumuke time selling of pmmtents our sole business.	tion concerning the proper course to be pursued in ob-
	taining huatents through our Agency, time requirements
But we do not contemmiplate any such change of business	of time Patent Office, etc., may had gratis upon apphi-
mit hmeesent; wimen we do, you will see it duly announced	cation to the principal office or either of the branches.
	of this paper.	Communications and remittances should be umddressed
In time cohumummus	to	       MUNN &#38; CO.,
 I. D., of hidYou are altogether in error In sup-		No. 128 Fulton st., New York.
posing that the Idea of plowing by steam is a recent The annexed letter from e late Comumisuisner of
Patents we commend to the perusal of all persons in-
suggestion. About timirty years ago, an experiment was terested in obtaining patents

mmmdc iii England, in Lancashire, when six acres of raw MEssEs. MUNN &#38; Co. I take pleasure in stating that
ummoss were Summed imp, as time report emmys, in the most while I held the office of Commissioner of Patents,
MORE THAN ONE-FOURTH OF ALL TilE BUSINESS OF TilE
extruordiumummy style. Sods eighteen inches in breadth oFamex came through your bands. I have no doubt that
and umiume inclines in thickness were cut from the furrow the public confidence thus indicated has b n fully de-
mud comniuletely turned upside down. Time possibility of served, as I have always observed, in all your inter-
course with the office, a marked degree of Iuromptness,
stemmumi-plowimig was then eetabhfshed; but thue machine .skihl, and fidelity to the interests of your employers.
scums too couuuiulex and costly for ordinary lumurposes. Yours, very trimly, CITAS. MASON.
	C.	M., of N. Y.We did not announce that Mr. Bor- August 14, 1857.
dcii was time first iuerson who had succeeded in concen- ~ ONEY.AN INVENTOR, WHO IS iN IN-
tratiuug aumd ~ureierving muuilk. If you had carefully read inst different circumstances, will assign one-third of his
omur article, such an assumption would not have been iuiterest in a new, useful and patentable invention to
huressed upon our attention. Your proposition to evolve any practical man who will sustain the cost of obtaining
a patent. For particulars, address S. F. S., Albany
time gas (usluichi, by the way, is not the primary cause of Post Office, N. Y.
time du.eouimhuositioui,) and suffering it to escape from the
	~ URVEVOUS COMPASSES, MATHEMATI-
muuilk, and inmmnediately afterwards excluding the air is Instruments Sun-eying Chairs, Barometers,
k~ cal
old, aumd practicumhly worthless. As early as 1810, a cc- Microscopes, Ma1ic ~Lanterns, Spy Glasses, Stereo-
port was made to time French gomernment, whuich em- scopes, Philoeophical Apparatus, &#38; c., &#38; c.
		   McALLISTER &#38; BROTHER.
	bouhied oumbotantiahly tIme views you express.	No. 728 Chesnut street, Phihadehluhmia.
	V.	MeN., of Ill. How ummany atmospheres can be MeAhhis rs Priced and Descriptive Catalogue (108
condensed in a given space or cylinder, and the proba- pages, 200 illustrations) furnished gratis on application,
and sent by mail free of charge.
ble hresure en each square inch of surface. rhe nun- __________________
her of mutummoopheres which can be condensed in a given B LILKLEYS PATENT DRY KILNS, BY
sluice entirely depends on the strength of thins niaterial superhmeated steam, will dry gruinin, flour, and umeal
without scorching, at a coat of two cents per barrel;
uviuiclin encloses it, amid tine compressing power at com- will also dry green inch lumber in from 12 to 20 hours.
ummumuud. But it is believed that all gases are cahumuble of Also, Evaporators for Boiling Chinese Sugar Cane, &#38; c.,
coumihurossion hits tIme liquid state, mad we the means of portable and cheahi. Circulars sent free on application.
ii.	G. BULKLEY, Kalamazoo, Mich.
performing tine experiments; tiuis has already been - -

effected whim carbonic acid, while oxygen, hydrogen, 0 CAPITALISTS, ENGINEERS, MANUFAC-
minitrogen, mud some compound gases have refused to .LTU RERS, &#38; e. The J kal (caveat-files) for feed-
in~ and preserving a uniform bight of water in steaum
hiqumify under pressures Iroum 27 to 18 atmospheres, which boilers (foaming or otimerwise) is simple in construction,

lust would give a pressure of 841 lbs. to time	square Inch. durable, reliable, and strictly automatic. Can be seen
timat assign- in operation at the works of Messrs. Welhs &#38; Mihler,
W.	R..,of N. j.Thmc iatent Law requires
	lenguneers, Baltimore, Md., where communications ad-
muents i)e recorded in time Patent Office. They should dressed to the inventor, J. T. BUTTERWOETH, will
tie sent witimin three nuontlus of thucir date of exeen- nueet with attention. Partner wanted, with a capital
of not less than $5,000.
	liii.	___________________________________________________________________________

C.	G., of L. We do muot timink your improvement in ACHINERY.S. C. HILLS, NO. 12 PLATT
time mumamuumfumehmure of smul ammmuoniac and soda from the 1~1 street. New York, dealer in Steam Engines,
waste hiqumer of gas works is patentable, for the method Boilers, Planers, Lathes, Chucks, Drills, Pumps; Mor-
tising, Tenoning, and Sash Machines, Woodworths and
of mumminkimig carbonic acid i)y throwing steam on lime- Daniels Planers; Dicks Punches, Presses and Shears;

stone wimiho red linot, has been known and practised Cob and Corn Mills; Harrisons Grist Mills; Johnsons
Shingle Mills; Belting, Oil, &#38; c.
some time, and is often used where a large supply of _________________________________________________

carbonic acid is wanted, and where fuel is cheap. p ECIPE FOR MAKING ARTIFICIAL HONEY,

F.	I)., of The mehodeon bellows, now greatly -LL As good in hooks and taste as that niade by bees,
and which does not cost over six cents per pomundsent
mused, is of time kind known as the suction or exhaustion for $1. Address N. F. GARDNER, Peace Dale, R. I.

bellows. It consists of two chambers, of which one,

communicating with tine reeds through thue key valves, T0 MMANUFACTURER~~AI~LEN &#38; OS-
is merely a receiver for the wind, and the other is a ONDS Improved Patent Shuttle Loom, hoc
Weaving Checks, Plaids, GinghamS, Handkerchiefs,
puummup. TIme punip mind receiver communicate with each Shawls, &#38; c.The advantage of this Loom over all
otimer by a valve opening into the pump, and the pump others heretofore in use, is, that on it may be woven, al-
	time atmosphiere by a valve	-	most with the facility of plamn print cloth, all kinds of
	communicates within	opening	cross-b. r fancy goods, of any device or pattern, winich
	outwards.		can be woven by hand; the lift and drop motion being
	r. MeN., of 111.For several winters past I have so constructed that it will skip from shuttle to shuttle,
left a tin dumper in a bucket of water at night. In time as may be required, and no shuttle can be made to
operate but the right one; thereby preventing the p05-
morning the water would he frozen in the bucket solid sibihity of mistake (by the weaver) in the pattern.
around tIme dipper, while the water in the dipper would Thuese looms maybe seen in operation in the Franklin
Factory, Wilmington, DeL, wlmere orders for them will
not be frozen. Tell me the reason? Answer.We be received and promptly attended to by A. P.
can scarcely realize the fact set forth, and it will not be OSMOND, Assignee.
	easy fully to explain the pimilosophy. Our opinion is,	-
that the latent heat which kept the whole in a liquid T0h HOUSEIiEEPERS.THE SUBSCRIBER
as discovered a process for making lard as hard
elate was being abstracted by the cold night air, but and good as the best tallow for candles, at a cost of not
inste,md of its being diffused, it was conducted by the over 25 cents per 1011 lbs. The receipt is sent to an~ one
for 25 cents. Address G. XV. FARMIN, Houston, Ions-
metallic surface (tin being a good conductor) to the ton county, Mi Ter.
	water enclosed therein, and thus the enclosed water	-	________
was kept liquid at the expense of the heat abstracted TILE UNiTED STATES MINING JOUR-
	from the surrounding fluid.	AL, Railroad and Financial Advertiser, with the
		fullest reports on Railroads, Mines, Metals and Finance,
		is published every Wednesday, by JOHN HILLYFF, 9
		Spruce street, New York. Three Dollars per annum.
Money received at thue Schentific American Office on _______________________________________________
account of Patent Office business, her the week endang T)ATENT PARALLEL PLIERS, HAND-
	Saturday, September 12, 1857 :	iT vice and Callipers combinedThe right on time
		above named implement for sale. These are the only
	 B. &#38; Ii., of Conn., $27; T. E. L., of Wis., $21; H. T.	parallel pliers ever invented. An engraving of the tool

G., of Mass., $25; XV. S. W., of N. Y., $30; W. K. 5;, of may be seen in No. 51, Vol. XI., SCIENTIFIC AM~ICAN.
Machinery would be taken in exchange for the ri~ht,
l.a., $711 J. McA., of N. Y., $15; L. &#38; H., of Ohio, $50; such as the advertiser is in want of. For information,

(0.	XV. D., of N. Y., $50; N. W. H., of N. Y., $10; J. L &#38; c., address WM. HART, Mayville, Dodge Co., Wis.
F., of Muss., $10; F. B., of La., $111; S. B., sf111., $45 ~1TELCH &#38; GRlFFITHSESTABLISHED

I-I. 0. F., of N. Y., $50; T. B., of Conn., $30; C. F. B.	1810Manufacturers of Improved Patent Ground
of Ohmic, $17; 0. L. C., of ILl, $10; L. S. S., of N and Warranted Extra Fine Cast Steel Saws, of the
various kinds now in use in tIme different sections of the
Y., $21; W. XV., of N. Y., $~5: G. E. S., of N. II., $10 United States and the Canadas, and consisting of the
S. F. B., of Coun., $25; A. S., of N. Y., $30; J. W., ef celebrated Circular Saw, Graduated Cross Cut and
Tenon, Gang, Mill, Pit, Segment, Billet and Fehise
N.	J., $15; L. T., of Ala., $100; N. J. S., of Ala., $30; ~ Saws, &#38; c., &#38; c. For sale at theirwarehouse, No. 48 Con-
II.	P. &#38; Co., of N. Y., $100; F. L. T., of Pa., $30 B. gress street, Bsston, Mass.
ANEW AND SCIENTIFIC INVENTION.
Dr. Cheevers Galvano-Electric RegeneratorPa-
tent issued January 15, 1856. A circular relating to the
muse of this instrument, embracing a general treatise of
atonv of the spermatic organs, the result of wimicim tends
to softening time meduilamy substance of which the brain
is composed, may be mad gratis, and will be sent to any
addreso by mail by their indicating a desire to receive

it.	All letters shuould be directed to Dr. J. CHEEVER,
No. 1 Tremont Temple, Boston.

E NGINEERING.THE UNDERSIGNED IS
	prep red to furnish specifications, estinmates, plans
in general or detail of steamships, steamboats, propel-
lero, high and low pressure enjues, boilers amnd ma-
chinery of every descritution. Broker in eteam vessels,
machinery, boilers, &#38; c. General Agent for Asherofts
Steam and Vacuum Ga5es, Allen &#38; Noves Metailic
Self-adjusting Conical PaOkin5, Fabers Water Gage,
Sewehls Salinomneters, Dudgeons Hydraulic Lifting
Press, Roebhings Patent Wire Rope for hoisting and
steering luorposes, Machinery Oil of the most approved
kind, etc.	  CHARLES XV. CO PELAND,
	Consulting Engineer, 64 Broadway.


t~ ATALOtIUE OF PATENTSNEW EDI-
~-) TIONShowing time subject or title of every pa-
tent ~ranted in this country prior to time present year,
and time number granted under each title. Also, tables
~iving time whole numuber granted, and the nunuber re-
spectively to the residents of each State and country.
Very interesting and useful to the inventor and me-
chanic. Price 25 cents. Address
J.	S. BROXYN, XVasimington, B. C.

W ASIIIN(iTON IRON WORIiSMALLERY,
	RAINS &#38; CO., and HIGHLAND IRON
XVORKSSTANTON, MALLERY, RAINS &#38; CO., of
Newbur., N. Y.Are extensively engaged in manufac-
turing all kinds of Steam Engines, Machinery and Gen-
eral Mill XVork. They are also partners of the finn of
STANTON, SNOW &#38; CO., Car Wheel Manumfacinrers
Newbumrg,N. Y., and are prel)ared to furnish Railroad
Cmurs and C r XVheehs of superior construction. From
the cimeapuess of real estate and reasonable price of
labor, mus u-eli as their great facilities of transportation
by two raihroumds and the Hudson river, they are enabled
to fill orders at time lowest pri and on the most rea-
sonable terms.


M OIJLDER WANTEDONE TIIAT FULLY
	understands green and dry sand moulding, and
is capable of getting up all the necessary fixtures for
casting pipe in the most approved manner. Must be
well recommended. Address Coombs, office of the
Scientific American, New York City.


~t1~~~AN EQUAL HALF INTEREST
544XL.JUtS.in several new and valuable patents,
will be sold cheap to a competent and responsible per-
son, who wihi introduce them to the public. Address
Box 87, Post Office, Brooklyn, N. Y.

I	RONPLANER FOR SALE.A SECOND-
HAND Iron Planing Maclube; has en run but a

short time; will plane ten feet ion, thiree feet wide and
thuree feet Imigh. Cost $868; will be sold for $550 cash.
Address GEORGE S. LINCOLN &#38; CO., Hartford,
Coon.


S AWS.HOE &#38; CO.S PATENT GROUND SAXYS,
	Plastering Trowels, &#38; c., can be had, whuohesale and
retail, at the principal hardware stores at the sales-
resins of the manufacturers, 29 and 11 Gold street, or at
the works corner of Broome, Sheriff and Columbia sis.,
New York. Illustrated catalogues, containing prices
and information interesting to sawyers generally, will
be sent by post on application.


S	CREWBOLTS WITH SQUARE, CAR-
riage or Counter-sunk Heads, Bolt Enos, Square
Head XVood Screws, Set Screws, Machine Screws,
Ratchet and Breast Drills, Standard Steel and Shrinkage
Rules, for sale, by CHAS. MERRILL &#38; SONS, 556
Grand street, New York.


M	ACHINERY.STEAM ENGINES, ENGINE
Lathes, Iron Pluiners, XVoodworth Planers. Saw
hulls, and a variety of other machuinery, for sale very
low for cash, to close consignments, by
A.	L. ACKERMAN,
161 Greenwich it., New York.


I	A. FAY &#38; CO., WORCESTER, MASS.,
.5.	build the best improved Woodworib Planers and
Matchers. Patented Aug. 11, 1857. Wrought iron cut-
ter head and flexible unouth-piece; will plane from 0f to
4 inches thick.


F OR SALETHE ENTIRE MACHINERY AND
	Real Estate of the Diamond Mills Man aeturing
Co., will be sold at public auction on the 20th of Octo r
next, commencing at 10 oclock, A. ill., upon the prem-
ises, Lansingburgh, Rensselaer Co., N. Y., unless pre-
viously sold. For particulars address
	A.	E. POWERS, President,
Lansiughurghm, N. Y.
PECKS PATENT DROP PRESS
best machine in use for stamping jewelry, sin m
ments, tinware, swedging iron, &#38; c. A smmpphy of iii
sizes on baud and made to order by the patentee, XIILO
PECK, New Haven, Coun. State rigiuts for sale


FORBES &#38; BOND, ARTISTS, 89 NASSAU
street, New York, Mechanical and General
Draughmtsmen on wood stone, &#38; c.

~ TEAM ENGINES, STEAM BOILERS
	Steam Pumps. Saw and Grist Mills, Marble Muils,
Rice Milto, Quartz illills for gold quartz, Sugar Mills
Water Wheels, Shafting and Pulleys. The largest as
sortinent of the above in tIme count , kept con tautly
N.Y.	_________
on hand by XVM. JIURDON, 102 Front street, Brooklyn,
_____________________________________________________
TB~S~~i~C COLLEGE OF THE
West Pemmn Square, Phula
doiphiaThe Polytechnic College, incorporated by the
Legislature, 1813, on the plan of time Industrial Colleges
of Paris and Berlin, affords a thoromughi profewional
education in civil engineering, minimug engineering,
mecimanical engineering, industrial, analytical and agrm
cultural chenmistry metallurgy and arelmitecture. Amnphe
facilities are provinied for field arid laboratory practuce
and assistant engineers may perfect themselves mu any
branch of timeir profession. The Fifth Annual Session
will comnnmence on Monday, Sept. 21, 1857. Apply to Dr.
A. L. KENNEDY, President of Faculty, Polytechnic
College. Philadelphia.	 __________	in

WEST PHILADELPHIA CHEMICAL WARE
FactoryAcid and fire-proof ware of all ohm p55
and sizes, up to 200 gallons, made to order; warranted
to resist acids of all kinds, and stand ehan5es of temn-
perature, from extreme heat to cold.
MORO PHILLIPS, 27 Northi Front it.

	ECOND-HAND MACHINISTS TOOI.S
S Consisting sf20 Engine Lumthmu o, 9 Iron Planers, 4
Upright Drills, Hand Luintlues, I bummue Lathue, Gear Cut-
ten and Vices, all in good ecu in, mmii for sale how for
cash. For particulars, addresu EbA N KLIN SKINNER,
14 Whitney avenue, New Ilavmmin. tommmm.

	b AGENTS WANh El)  TO SELL
5 uuu
	three new and unequmulleum inventions, want-
ed and selling everywhere. My ugents have cleared
over $20,000 on them. Diplomas, silver medal and four
patents granted on them. For four stamps youll re-
ceive forty pages particulars. Best agency un the cohn-
	try.	EPHRAI B OXYN
	Lowell, huulass.

C IIANGE OF RESIDENCE.  VERGNES
Lleetro-Chmemical Baths, 778 BroadwayProd
Vergues, the inventor of these baths, celebrumtcd for the

sorption of niereuury, or any other metallic munedicine,
informs the public and his friends that he hiss moved
cure of rheumatism and diseases generated by the ab-
from 710 to 778 Broadway, where line attends to mis batlus
personally, having no connection whatever with any
other establishment in the city. lertable ahuparatus for
sale, with all necessary instructions, inciuudimug a new
process for administering iodine, quinine, etc.



F OR SALE AT FLUSHING LONG ISLAND,
business and mac~minery of John C.

	steam engine, a ten-horse power boiler, lathes, saws,
boring and drilling machines, rounding macimines, saws
	Quartermans estate, consisting of a smx-hmoroe power
for scroll work, and a machine for nuaking shovel, coal-
hod and pail handles, together with all flue tools and
fixtures. The business has been established from time
year 1851, and to an ingenious unechuanic opens a good
isrospect. For particulars apply to JAMES QUARTER-
MAN 114 John street, New York, or to SARAh ANN
QUAIITERMAN, Flushing, L. I., wino resides on thus
place.

UNEQUALLED STRAW
E.	a~a CUSHINGS
	alk CumiterFor finiolined work, or time riglut
of territory, address the inventor, Dryden, Tommmpkins
county, N. Y.


CAST STEEL WiRE DRAWINGAT TIlE
Union XVorks, Paterson, N. J. Orders solicited
and carefully filled by CHAMBERLIN &#38; CO.


W OODWORTHS PATENT PLANING
	HINES, of every kind and all prices. A
large assortment on hand; and I ani prepared to con-
struct any machums to order, from ten days to two
weeks, and guarantee each machine to be perfect in its
construction, and give purchuasecs entice satisfaction.
The patent has expired, and will not be renewed. I
niake this business exclusive, ninanufacturing nothing
but the Woodworth Maclnines, and for that reason can
niake a better article for less nioney; and with my fif-
teen years experience I fully guarantee eaclin mumuchmine
to come up to what I am willing to recommend, that is,
that each machine shall be more than equal to any
other nuanufactured for the samne price. J OHN II.
LESTER, 57 P ci street, Brooklyn, N. Y., thuree blocks
above Fulton Ferry.







B	OILERFLUES-ALL SIZES, AND ANY
length desired, promptly furnishmed by JAMES 0.
MORSE &#38; CO., No. 79 John street, New York.

	iRON PIPEPLAIN AND GAL-
WROUGHT
	IZED, sold at wholesale, by JAMES 0.
MDRSE &#38; CO., No. 79 John street, New York.

	ON WOOD AND MECHANI-
ENcIRAVING
DRAWING, by RIChARD TEN FYCK,
Jr., 128 Fulton street, New York, Engraver to tIme Sci-
entific American.

	CROSBYS PATENT RE-SAWING
pEARSON
	INESThe Crosby patent for resawing
lumber, having been re-issued April 28, 1857, and having
purchased the right to the same for time State of New
York and Northern Pennsylvania. the subserihmer is pre-
pared to sell rights to use the machines in the greater
portion of the above naumed territory, and also to furnish
the public with these machines. Having re-built umy
machine manufactorywhich was destroyed by fire on
the 9th of February lastI continue to manufacture and
have on hand for sale, Woodworths Patent Planing
Machines, from $15010 $1,500, and of a quality unequal-
ed by any other manufacturer. Also the separate parts
of the muachine, namely, planing knives, side tools, side
cutter heads, cylinders, &#38; c., as weil as tIme above named
Crosby Re-sawing Machines. JOHN GIBSON
Planing Mills, Albany, N. V.

INVENTORS AND MANUFACTUR-
lower, for the exhibition of
machinery, can be had in the Depot Buildings, corner
of Elm and Franklin streets, New York. The location
is extrenmehy desirable for its prominence and conve-
nience to the business part of the city. Apply to T.
BENNETT, on the premises.

	BELTING, STEAM PACKING,
~AgIINE
	GINE HOSEThe superiority of timese arti-
ches, manufactured of vulcanized rubber, is established.
Every belt will be warranted superior to heathier, at
one-third less price. The Steam Packing is made in
every variety, and warranted to stand 3t0 degs. of heut
The hose never needs oiling, and is warranted to stand 
any required pressure; together with all varieties of ~
rubber adapted to mechanical purposes. Directions,
prices, &#38; c., can be obtained by maii or otherwise, at oar 0uu.
warehouse. NEW YORK BELTING AND PACKING
COMPANY. JOHN H. CHEEVER, Treasurer, No. 6 ( P
Dey street, New York.



~
uIs
I AP-XVELDED IRON BOILER TUBES. ~ TEAM PUMPS, BOILER FEED PUMPS,
L.A trossers PatentEvery article necessary to drill ~ Stop Valves, Oil Cups Cocks, Steam and Wuiter
time tube-plates and set the tubes in the best manner. Gages, sold by JAMES 0. hIORSE &#38; CO., No. 79 John
TIIOS. PROSSER &#38; SON, 28 Platt st., New York. street, New York.


THE BEST BOOKS TO SELL.BOOKSEL-
LERS, Agents and Newsmen will find a quick
sale for those new hand-books, just published: H OW
TO XVRITEHOXV TO TALKHOW TO BE-
hAVE, and HOW TO DO BUSINESS. Price, free
by mummil, only 1(1 cents each, or the four in paper, $1.
Complete in one large gilt velume, $1 50; now ready.
Try tinemn. Address	FOWLERS &#38; XVELLS,
	 0118 Broadway, New York.


OIL! OIL! OIL !FOR RAILROADS, STEAM-
ERS, mind fec muachuimmery and bmmcning. Peases
Improved Machimmero and ihurnimie Oil will save fifty
per cent., and will not gmunm. This oil possesses quali-
ties vitally esoentimul for lubricating and bumming, and
found in fib ether oil. It is offered to the public upon
the moot cehieble, thoron h mind prsctical test. Our
most skillful engineers and mumachuinists pronounce it
mmpecier and cheaper thuan any other, and tIme only oil
thuat is in ahi cases rehiabie and wilt not gum. The
Scientific Anmerican, alter several teets, pronomunced it
superior to any ottuer thiney lumuve ever used for inns-
chinemy. For sale only by the inventor and manufac-
turer. F. S. PEA SE, 61 Main it., Buffalo, N. Y.
	N.	~.Rehiable orders filled for any part of the United
States and Europe.


NEW HAVEN MANUFACTURiNG CO.
htachinists Teshe, Iron Planers, Engine and hand
Lathes, Drills, Belt Cutters, Gear Cutters, Chucks, &#38; c.,
on hand and finishing. ilnese teols are of superior
~ uslity, and are for sale how for cash or approved paper.
or cuts giving full description and prices, address
New Haven Manufacturing Co., New Haven, Coun.


HARRiSONS 30 INCH GRAIN MILLS
Latest PatentA supply constantly on hand.
Price $200. Address New haven hIanufacturing Co.,
New Haven, Conu.


AGENTS WANTEDTO DISPOSE OF AN
article latefy invented. Sells readily; large pro-
fits. Samples, with terms, &#38; c., sent by mail for 50
cents, in coin or stamps, or partieniars for 3 cents.
XVM. HART, Maysyile, Dodge county, Wis.

LIh~~ARY FORCE AND LIFT
pump for railroads, engines,
wells and cisterns. Warranted to raise water 100 feet
by luand. For drawings and prices address
JAMES M. EDNEY, General Agent,
56 John street, New York.</PB>
<PB REF="IMG00020" SEQ="0020" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="16">






Setting and Sharpening Saws.

	There is great variety in the methods adopted
by sawyers inpreparing saws, even when they
are intended for manufacturing the same
kind of lumber. Nothing can be more palpa-
ble than that all cannot he right, yet it is
likely that no method of shaping and working
saws can ever be proposed which will be ac-
cepted by all, and some degree of diversity
must always be endured.
	Messrs.1 Hoe &#38; Co., of this city, (a firm
which has been long known as comprising
within itself mechanics of no common order,
and as particularly successful in the manufac-
ture of saws,) furnish the following directions
for setting and sharpening circular saws
	Before the saw is set, the side towards the
log should be perfectly fiat, and all the differ-
ence in thickness between the outer edge and
the middle of the saw must be on the side next
to the board, so that the log may pass without
pressing against the body of the saw; there-
fore, the flange that is fast on the mandrel
should be a little concave, nnd the loose flan~e
perfectly flat. If the saw is not in the re-
quired shape when screwed up betwccn the
flanges, it may be adjusted by packing between
the flanges and the saw with writing paper.
	After the saw has been made to run as true
as possible sidewise, turn it backwards slowly
against a file that is held firmly on an im-
movable bearing. This operation will trim
off the longest teeth, and leave the points all
equally distant from the center; then file off
the top of the tooth until the facet made by
the jointing file is hut just perceptible at the
IJoint, and the saw is prepared for setting.
	To set the saw, we use a crotch punch of
hardened steel, and a riveting hammer that
weighs about a pound. The angle of the
punch should he a trifle greater than that of
the point of the tooth, and a little convex
lengthwise of the grooveas denoted by the
curved line in the annexed cuts, Figs. I and 2
being two views of the punchso as to spread
/7Li ~
Fig.2
,jj~iIIJj

the point of the tooth from the center 1)0th
wayc. Hold the punch against the point of
the tooth parallel with the side of the saw, and
with repeated moderate blows of the hammer
np~et the points of the tooth equally on both
sides to the required breadth. To suppurt and
strengthen the cutting edge after the teeth are
upset enough, we may with considerable ad-
vantage draw out the top of the tooth with the
riveting hammer, while a piece of iron fitted
into the space below is held firmly with a
perfect hearing under the hammer.
	The teeth of circular saws for ripping
should be pitched forward as much as they
can he, and leave sufficient strength of tooth
and space for sawdnst; and th~ number of
teeth should he proportioned to the hardness
of the timber to be sawed, say for a 48-inch
saw 30 teeth for hard wood, and 24 for soft.
	For saw of 48 inches diameter and 30
teeth, the pitch (by the pitch of saw teeth we
mean the inclination of the face of the
tooth up which the shaving ascends the
distance from point to point, we call the
space) of the teeth may be determined in the
following manner Describe a circle from the
center of the saw equal to one-half of its di-
ameter, arid a hue drawn from the point of
the tooth across the saw, touching the out-
side of the circle, will give the pitch. For 24
teeth, the circle may he five-eighths of the
diameter of the saw.
	The back or top of the tooth for about an
inch back from the point, should be on a line
~drawn from the point hack to the next tooth,
and as much below the point of that tooth as
each tooth is required to cut. For instance,
if your feed is equal to 1* inches to one revo-
lution of the saw, and the saw has 30 teeth,
each tooth must cut one-twentieth of an inch.
After the saw is set as directed, the teeth must
be filed up sharp, finishing with a fine, single
cut file. The cutting edge of each tooth
should be parallel with the center of the man-
drel, and the front and back of the teeth kept
on the lines as described, and shown in Fig. 3.
	Mill saws, with teeth such as are shown in
Fig. 4, after being straightened on the edge,

fT1. I

L

mu~t he ~et md shiarpeiied in the same man-
ner as circuhars. TIse pitch of the teeth is 60
degrees.
	Fig. 5 is another form of tooth and plan of
setting and sharpening, not so good as No. 3,
bnt a great deal better than the old plan. In
this case, after the saw is straightened on the
ri
I
edge, the teeth are filed sharp at the points,
like a cross-cut saw, alternately highest on
the outside, and then upset with the punch.
	Fig. 6 is the oldest, most in use, and, we
think, the most objectionable plan for setting
a circular or vertical mill saw, and is so well
jI~1





I II
	Fig. 7 is a crotch punch, for widening the
points of saw teeth, and Fig. 8 is a tool made
in three pieces. The parts A and B are made
of steel, nicely fitted and heardened, amad are
Literary Notices.

	Wutmus NATCRAL Psmu.osoa-uv, for the muse of selmools
academies and private students; introducing the latest
results of scientific discovery and research, and arranged
with special reference to the practi 1 application of
physical science to the a a and experiences of every-
day life. By David A. Wells, A. M., author of Science
and Common Things, Annual of Scientific Dis-
covery, etc.; with nearly 41111 Illustrations. New York:
Ivison &#38; Phinney; p p. 4511; $0. In our opinion this
work is better adapted for elemen a inatnuction than
any other now before the public. As It is fully up to
the Ismes as regards modern research, it will also be
found most useful as a beok of reference in private
libraries. A distinguishing characteristic of the work
is the number and beauty of its illustrations. They are
different from the old stereotype figures that have beon
used, for the last fifty years in every educational work,
and most clearly explain the subject-matter, almost in-
dependently of the texi. We believe we do good ser-
vice to the cause of science and edumeation by recom-
mending teachers and others to examine this book.

	Cmm.4aamusrose MimnucAn JousesAL ANIS Rmmvsmnv.C.
Happsldt, M. D., Editor and PublisherThis is the
organ of the allopaihie school of medicine in the South,
and ii an able and learned work. The present nunaber
contains a likeness of Dr. Kane, with a memoir; also
the conclusion of an instructive article on Life and its
Relations, by Dr. Burns. TIme Jsuu,-nal is published
hi-monthly, at $4 per annum. It ppears to have an
international circulation.
Th~ 7











#
O1~ TIW

SCIENTIFIC AMERICAN.
I
VOLUME THIRTEEN.

TO MECHANICS, MANUFACTURERS,
INVENTORS AND FARMERS.

	In announcing the THIRTEENTh Annual Volume
of the SCIENTIFIC AMERICAN, which commenced
en the 12th of September, the ~ditors and Publishers
embrace this opportunity to thank their numerous
friends and so scribers for the encouraging and very
liberal support heretof re extended to their journal, and
they would again re-a sure its patrons of their deter-
inination to render the ScsassTsese AMERICAN mere and
more useful, and more and more worthy of their couu-
tinned confidence and good will. The undersigned
point to the past as a arantee of their disposition to
always deal justly and discriminatingly with all subjects
of a Scientific and Mechanical character which come
within their purview.

	Having entirely discarded the sy~ tem of employing
itinerant agents to obtain subscribers, She Publishers of
the Scussersisse AausssscAN propose to offer

ONE THOUSAND FIVE hUNDRED h)OLLAIIS IN
CASTI PREMIUMS
for the fifteen largest lists of subseribem sent in by the
1st of January, 1558, said premiums to be distributed as
follows
	For time largest List	7(01
For the 2d largest List                 
For the 3d largest List 		-	-	200
For the 4th largest List 	- -		 -	150
For the 5th largest List 		-	-	01)0
For the 6th largest List - -			- -	90
For the 7th largest List		-	-	to
For the 8th largest List - -			- -	70
For tile 9th largest List 		-	-
For this 10th largest List - -			- ZI	~
For the 11th largest List 		-	.~	40
For the 1 h largest List -			-~-. -	35
                                       For the 13th largest List 		-	-	30
___________________________ For the 14th largest List - -			- -	25
 For the 15th largest List 	- -		 -	20

Na ci of subscribers can be sent in at different thues
- ~~~frem different Post Offices. The cash will be paid
to the orders of the successful competitors immediately

after the 1st of Janna , 1858.
Southern. Western and Canadian money will be taken

for subscriptiens. Canadian subscribers will please to
remit twenty-six cents extra on each years subscrip-
tion, to prepay postage.
TERMS OF SUBSCRIPTIONTwo Dollars a Year,
or One Dollar for Six Months.
CLUB RATESFive Copies, for Six Months, $4;
Five Copies, for Twelve Months, $3; Ten Copies, for
Six Months, $0; Ten Copies, for Twelve Months, :15;
Twenty Copies, for Twelve Months, $23.
For all ebbs of Twenty ausd over, time yearly sub-
scription is only $1 43.
	The general character of the SeumNTsmmc AMERIcAN
Is well knows, and, as heretofore, it will be chiefly do-
voted to time promulgation of information relating to
the various MeCsmANmcAa ANI) Cus mcu. Aura, MANe-
s-AcrmTImEs, Aeamcmm-rm~aum, PATENTS, INVENTIONs, EN-
CINSEEsNO, Mmmi. Woar, and all interests which the
light of PRKCTc me Scuexca is calculated to advance.
It is issued wes s-, in forum for binding; it contains
annually from to 650 finely executed Engravings,
and Notices etA inerican and Europeumn Improvements
together with an Official List of American Patent
Claims, published weekly, in advance of all other
papers.
	It is time alum of the Editors of the ScreNavese AMmum-
CAN to present all smibjects discussed In its columns in a
practical and popular term. Timey will also emmdeavor
to maintain a candid fearlessness in combating and ex-
posing false theories and practices in Scientific and, Me-
clmanical matters, and thus preserve the character of tIme
	SCWNTSa-me AMxumCAN as a reliable encychop. die of suso- 
and stated tlmat tlmis service was performed ful and entertaining knowledge.
while lie was Commissioner. It should have ~ Specimen copies will he sent gratis to any past of
read before his appointment as Commis- the Publishers and Patent Ageults,
MUNN &#38; CO.,
smoner. 	No. 128 Fumlton street, New York.
bound together with the iron band, C. It is
used to widen the points of saw teeth when
they have become worn and blunted on the
corners, and may be used without the neces-
sity of filing the saw afterwards.
	Figs. 1 and 2 represent a punch somewhat
similar to the last, made in one piece. It is
stronger, and on that account better adapted
to upsetting heavy saws.
	If those rules are strictly observed, tIme saw
will always balance, and there will he imo oc-
casion for using a gumming machine.

The Itighst of Expatriation.

	It not unfrequemetly happens that natives of
tIme ITsmited States remove to the adjoining
provinces, and remain there witlsout taking
any legal measures to dissever their former
political connection. Sometimes inventors
Isave applied to us to know what rights they
possess under such circumstances. Time fol-
lowing opinion from the United States Attor-
ney (3eneral will enable all to decide for them-
selves how far removal hess effected their
citizenship. He says
	There is imo statute or other law of the
United States which prevents either a native
or a naturalized citizen from severing his poli-
tical connection with the governmrent, if he
see proper to do so, in time of peace, and for
a purpose not directly injurious to the inter-
ests of the country. There is no mode of re-
nunciation prescrihed. In my opinion, if he
emigrates, carries Isis family and effects with
him, manifests a plain intention not to return,
takes up his permanent residence abroad, and
assumes the obligation of a subject to a foreign
government, thais would imply a dissolution of
his previous relations wills the Ussited States,
and I do not think we could or would after-
ward claim from hum any of the duties of a
citizen.

Parlor Laboratory.

	Astoniskissg ExperissuesitInto a small re-
tort place an ounce of strong liquor of potash
that is, pure potash dissolved in water, to-
gether with about a drachsm of phosphorus.
Let the neck or beak of tlse retort dip into a
saucer of water, say half an inels deep; now
very gently heat the liquid in the retort within
a spirit-lamp until it boils. In a few minutes
the retort will be filled with a white cloud,
then the gas generated will begin to bubble at
the end of the retort; a minute more, each
bubble as it issues from the boiling fluid will
spontaneously take fire as it comes into the
air, forming at the same time the philoso-
phers ring of phosphoric acid. Care is re-
quired in handling phosphorus; but our young
chemical readers will, we think, not forego
this wonderful experiment for the want of due
attention, for, without proper care on their
part, we must give up showing them wonders,
even greater than these. $. Pinsaw..


The Late Commissioner of Patents.

	In our notice of Judge Mason, ox-Com-
missioner of Patents, last week, we alluded to
understood among sawyers as to require no his preparation of a code of laws for Iowa,
description from us. In this case, after tIme
tooth is worn off so as to be thinner at the
point, it may be spread out to its original
thickness with the crotch punch.
10

II
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	-	5,






























TILE ADVOCATE OF INDUSTRY, AND JOURNAL OF SCIENTIFIC, MECHANICAL AND OTHER IMPROVEMENTS.
VOL. XIII.	NEW YORK, SEPTEMBER 26, 1857.	NO. 3.
TILE


SCIENTIFIC AMERICAN,
PUBLISHED WEEKLY

At No. 128 Fulton street, (Sun Buildings,) New York,

BY MUNN &#38; Co.

0. D. MUNE, S. II. WALES, A. E. BEACH.

	Ileoponsible Agents usay also be found in all the
princii)al cities and towns in the United States.

	Sampson Low, Son &#38; Co., the American Booksellers,
47 Ludgate Hill, London, Eng., are the British Agents
to receive subscriptions for the SCIENTIFIC AMERICAN.

	Single copies of the paper are on sale at the office of
publication and at all the periodical stores in this city,
Brooklyn and Jersey City.

	TERMSTwo Dollars per annnm.One Dollar in
advance, and the remainder in six months.

	See Prospectus on last page. No Traveling
Agents employed.



Coal Gas.

	The Now York Gas-light Company have in
operation three retort houses, Containing 504
retorts, and over 160 furnaces. There are
also purifying and condensing houses, to-
gether with the usual numher of workshops
and offices. They have two large chimneys
over 150 feet high, with six telescope gasome-
ters, exclusive of six distributing gasometers,
at different parts of their district, which hold
over 1,500,000 cubic feet of gas The total
cost of these works amounts to over $500,000.
	The company employs about 400 men, and
manufactures 150,000,000 cubic feet of gas
per year, consuming about 40,000 tuns of coal,
from which over 25,000 tuns of coke are pro-
duced. Before 1849, the company manufac-
tured their gas from oil and rosin, but now
they use two-thirds of Cannel and one-third
of Newcastle coal, and when the gasometers
are not large enough to contain what is manu-
factured, the Cannel coal is exclusively used,
as it is purer and makes more gas, although
its market price is somewhat higher thaa New-
castle.
	The process of manufacturing gas is as fol-
lows :A panful of coal is put into aa iron
retort, under which is a furnace that heats the
retort red hot, turning the coal partly into
gas and partly into coke. The latter remains
in the retort, while the gas passes out through
a pipe half filled with water, called the hy-
draulic main, the force in the retort being
sufficient to drive it through the water and
over the surface; but it cannot pass back, as
the water acts as a seal to secure it. Thence
it is conducted into a condensing pipe to the
condensing house, where its heat and volume
are reduced. It is then transmitted to the
purifying house, where it passes through three
distinct beds of dry lime, which extract the
sulphurous particles from it. There are test
cocks attached to the purifiers, by which its
purity is tested. The cock is turned to let
gas out, and a piece of paper saturated in a
solution of sugar of lead held over it, and if it
stains the paper, it is impure. It is said that
sugar of lead will detect one impure part in
40,000 cubic feet. The gas, when purified, is
conveyed to the gasometer, from which it is
distributed into the pipes throughout the city.
	The company have over 125 miles of pipe
laid, covering the whole of their district,
which consists of all that part of the city south
of Grand street.

	Tile lecture hall of the Smithsonian Institu-
tion at Washington, D. C., is built in the form
of a speaking trumpet ; the lecturer stands,
as it were, in the smaller end, and the slightest
whisper can be heard all over the room. It
was colistructed under the direction of Profes-
sors Henry and Bache, and is a triumph of
acoustical science applied to public buildings.
	Chain-making is an important manufacture, a chain of any length that may be desired. It
and on the strength and compactness of may be driven by any convenient power,
chains often depends a cargo of ~ecious mer- either steam, water or horse. The arrows in
chandize, the success of some great engineer- Fig. 2 indicate the direction of the pressure in
ing undertaking, or, in fact, any of the the cutting process.
thousand articles of worth that are daily being For further information and particulars, ad-
pulled, transported, or raised by this means, dress the inventor and patentee, Christian
For all purposes where chains are employed, Sleppy, Wilkesbarre, Pa.
it is desirable to have them strong and cheap,
therefore, wherever we can introduce ma- Bank Note Paper.
chinery into their manufacture, we secure A Bank of England note has some peculiar
both. The ordinary process of forging a chain and interesting characteristics of manufacture,
of any dimension is a tedious one. The bar the paper being distinguished by its color,
of metal is heated to welding heat, and then which is a peculiar white, such as is neither
the end bent in the form sf a hook, which is sold in the shops nor used for any other pur-
cut off and welded into round or oval form; pose; by its thinness and transparency, quahi-
another piece of the bar is then taken and ties which prevent any of the printed part of
bent, cut and passed through the already the note being washed out by turpentine, or
formed link, and in its turn welded together, removed by the knife, unless a hole is made in
and so on to whatever length is desired, the place thus practiced on; by its character-
	The machine which is shown in our en- istic feel, a peculiar crispness and toughness,
graving is one which cuts a perfect chain out by which those accustomed to handle it dis-
of a bar of metal. In Fig. 1, A is the frame. tinguish the true notes instantly; the wire or
B B are the axles which are connected with the water mark, which is produced on the paper
gearing wheels, B B. C C are two solid iron when in the state of pulp, and which is easily
wheels, working in boxes, A, at right angles distinguished from a mark stamped on after
to D D. These four wheels, D D and C C, turn the paper is completed; the three deckle
one another by means of cogs, and revolving edgesthe mold contains two notes placed
the same way, meet in the center. On their lengthwise, which are separated by a knife at
edges are cut a series of grooves or dies, each a future stage of the process, this deckle or
forming one quarter of a link; thus when wooden frame of the paper mold producing the
dies, 1 1 1 1, meet at the center, in turning peculiar effect seen on the edges of uncut pa-
round, any plastic material interposed would per, and this edging being caused when the
be cut by them into a link of a chain as would paper is in a state of pulp, precludes any suc-
2 2 2 2 or 3 3 3 3. cessful imitation after the paper is made; also
	The operation is as follows :A bar of iron by the strength of the paper, which is made
or other metal heated to the welding heat, from new linen and cotton. In its water
having the section shown in Fig. 2 is passed long or unsized condition, a bank note will
through the center of the wheels, D D and support thirty-six pounds; and when one
C C, which in revolving carry the bar down- grain of size has been diffused through it, it
wards with them. In consequence of the will lift half a hundred weight.
dies or impressions on the periphery, however, If a little more care was taken by our State
it is cut; and as each die is the quarter of a governments in regard to what sort of paper
link when it is met by the foi~r dies, the bar is should be used in the printiun of bank notes,
cut into a perfect link, and this link cutting goes the people would suffer much less from the
on as long as the bar is fed, thus turning out spurious stuff now in circulation. In some
respects we are a heedless people, and have yet
something to learn from the old nations~o~
Europe.

Brooklyn Water Works.

	Water-works to supply the neighboring city
of Brooklyn, Long Island, with water have
been under contract for upwards of a year, but
they appear at this date to be progressing
very slowly. The plan is to obtain the water
by collectiun together several mill streams on
the lower side of the island, and to lead them
either in an open canal or closed conduit to a
low point near the city, from which the water
is to be forced up by steam pumping to the
top of the highest ground in the vicinity, froni
whence pipes are to supply the city. The
reservoir on this hill is partly finished, the
canal partly excavated, and any quantity of
designs and estimates have been received for
the pumping apparatus, but nothing further
has transpired, and we hear it reported that
the extreme low level at which the canal will
have to run has been found to involve such
serious difficulties that it is contemplated to
change the plan, and at an expense of a
million dollars more, to substitute a canal
running at a level higher than the streams,
with. a pumping engine at each stream, to ele-
vate the water into it.

What Is it?

	One of the saveiss at the late convention of
scientific men at Montreal insisted that coal
was not of vegetable origin. All geologists at
the present time say that it is, and we should
like to know how he accounts for the gigantic
ferns and monster pine trees which are found
in nearly all coal formations, and seem to
point directly to its vegetable origin. Soft
coal is full of these, while anthracite contains
comparatively few. This may be accounted
for by the compact and hard nature of the
latter, which would indicate that it has been
subjected to greater pressure and changes in
other ways sufficient to remove all traces of
fossils either of animals or plants. There is,
however, nothing like differing from the rest
of the world, if you wish to be thought pro-
found. We wish this wise one had given us
his idea of what coal did originate from, for it
is not good policy to pull down one system
without you have another build up in its
place.

Science among the Japanese.

	1\l. Von Siebold, the distinguished scientific
author, states that the knowledge of the
natural sciences amongst the Japanese is
much more extensive and profound than is
generally supposed. They possess a great
many learned treatises thereupon, and an ad-
mirable geological map of their island by
Buntsjo. They are well acquainted with the
systems of European naturalists, and have
translations of the more important of their
works. They have also a botanical diction-
ary, in which an account is given of not fewer
than 5,300 objects, and is embellished with
numerous fine engravings.


	Mr. J. K. Baird, of Vincennes, lad., has
sent us a specimen of his daughters
workwosnaisship  one of the most skillful
and ingenious pieces of ladys work we
have ever seen. It consists in four stockings,
knitted at one operation, on only four needles.
The stockings are one inside the other, and
each distinct and separate. It is now on ex-
hibition at the Crystal Palace.
I
SLEPPYS CHAIN-MAKING MACHINE.

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\	5	J
	18




	HuLe,eeou RiceWilson A.er, of Rhorsbur~ Pa I
claim removing the rice huok by preosurs in direction
of the length of the grain effected by the action of a
shell and burr, dressed and operating substantially as
set forth.

	CLEANING ttujeWilson Ager, of ilhorsburg, P I
claim the method of cleansing rice by submietin, the
mixture of grain and husk resulting from the hulling
process, to an alternate packiug and loosening action,
produced by surfaces dressed and operating substantial-
ly as set forth.

	GanoeuN(o MILLAaron Arnold, of Troy, N. Y.: I
claim the combination of the rotatin, disk or plate, 1,
and nit or sectional cone, J, with tile interior ot cbs con-
rave, G, and flange, F, for the purpose of feeding in to
tile ulill, and grinding large substances, such as corn on
tile cob, an(l so set foith.
	I also dunn securing tile cone and disk, or plate, I,
to the shaft, through tile intervention of tise fllce plate.
H, substantially as set forth, so that said cone and disk
may at any tilne be removed and replaced by others
wilen tiley becoiuo dull or worn away.

	Feone BOLTN. Ilcuinan, of Elmore. Ill.: lam aware
that beaters placed both parallel and spirally with their
shaft issive been used for similar purposes. I tilerefore
do not claim said beaters separately.
	tint I clams the silell or case, B, carved or formed as
shown, in combination wills tise rotating beaters, K, and
frame, e, with bolting cloths, f, attsschssd, the whole be-
ing arranged as sisown, for the purpose set forth.

	[This invention consists in tile employment of a 5ta-
tisnary shell or case, wisicis is formed of metal or wood,
and of a poesiliar shape. It has a frame covered with
bolting cloth fastened to one elsie. Within tise case
rotating silaft is placed, isas-ing beaters attacised, and
the whole so arranged that tise beaters rotating in con-
junction Witil the form of the shell, will cause the flour
and bran to be thoroughly separated.]

	KNEADING DononIliram Borden, of New York
City: I chains tise eissploynsent in a kneading machine
of a flopper, B, applied and operated in any manner,
substantially- as set forth.

	[A flopper or rigid bar is so arranged tisat it is made
to rotate tilrough tise dough and to mix tile flour, water,
and yeast, or other ferment, tilorougilly together; after
wisich it cslts the dough uis in stripo, and tisen re-unites
it, all the wisile working it l5~ Cmli doss-n. so as to ssfford
a light and pleasant bread.]

	HAmuseNINes IIAT BoomesJosephs Booths, of Newark,
N. J. : I claim a isardening machine operating suisetan-
tially as set forth, ansi consisting ssmhutssntisshly of a cra-
dle and of a rospishly revisiviug spindle, upon wllich tile
cradle is supported eccentrically.

	SU5TAININO WINnOW SAsIIEsiward P. Briggo, of
Salons, Mass. : I cissim fslrmsishing use ossohs wills this
usetal strip, g, in colubination witis tile sisgular gessovod
ssspport, h, aisfi spriuc, c, in use umanner slllsi for use
pSldpOsO set fortis.

	5NI5IA lUIIIIEP. t-A5NTsVihhissmss &#38; Vs ihliamos A. Bsmtchser,
of Philadelplsiss, Pa. : I cissills tise conspositioms prepared
and csusposed of time usosterissis as descrihesh, for the psir-
pose of nsakimsg water-pm-oof paint.

	Gus GcesceAxoasIohn Iluther, of Brooklyn, N. Y.
I ens aware tlmsst a psstent Imas iseen granted for tise use
of fussed metals, by passing the products of tise distihiss-
tion of cossi ansI other substances yieldimsg cssrhuretted
Isydrogen (gas) thlroughs said usetals. I therefore sims-
claim the use of fusesi usetals, fusible at a low stats of
temperature, for time purpose of pasoissg the prodsscts of
time destructive distillation of cossi end other substances,
tisrosigis said metals.
	Nor do I claim ossid metals for brimmging distihioul car-
bon-hsvshrous vapors in imommueslioste contact withs tise sur-
face of the same.
	Nor do I cissins fomoed metal for tise psmrpoce of floatino
time cssrboneceosms nuatter usually depositesi in retorts.
	I chaimsa generating ihlnnsinsstimsg gas in a retort ovem-
Cisc surfisce of mssehteel leash, or otimer fumoible usetal, in the
manner sot fssrtls.

	ExcuvAToasZO Butt, of Lincointown, N. C.: I chains
tile attacising use posts. G (I, ill comsshmmsation withs time
crusoe busr, p resti:ug sipon tise freusse to lime scoop itself
by pivots or othsemvise, for time purpose of iseariug and
supporting it wimihot ~ imsg ssmssl regusiating tise depths it
is to enter me roumn~amsd for taki:sg time strain oftise
ch ins ansi os-indices.
	Again. I chaimss is my invention time elevation of time
loadesh 5ecusvsstor by Imorse loss-ed, in time usanner de-
scribed, or silly otlser usetisosi ousbotantiushly time same.
	I hskusursoc chsssmss time arrangemssent and comubination of
tise gate catchs rod and lever, so timat thins gate can be
opemsed and closed by the driver without his heavin, his
seat, substantially sins sisown and described.

	MAsTIC IiOOsomNo~Wmu. II. Cssrver, of Covington.
Ky., and J. Beckley, of Cincinnati1 Ohsio: We are aware
thmst near all, if not all the ingrefisents, cousposing our
cement isave iseen used, and therefore do not us-isis to be
understood mine claiming any of thsemn wisen taken sep-
arately, nor time whinole of tisem ms-hen mised togetiser.
	But we cissiun the precise manner employed of mixing
ansi coumpoumuding tise ingredients consposiug time cement,
whinems comubinesh withs the proportions of ingredients, as
specified by wisicis process of usixing and compounding
and combinatioms of ingredients, and applying the ce-
muent to msss, we are emisibled to ulecompussus or destroy the
ammonia contained in time coal tar, to preveist it fromus
destroying time cemsscnt and suIting time canvuss on whicis
it is spreaul, and at time sanse timese prosisses a cement tisat
is not brittle and subject to cin-acking, bsmt isard enough
to resist forces tisat roofs are genem-ahly subject to, and at
the same time elastic enosugis tus expand and comltract to
suit all conditions of Iseat and cold, and sminake the ce-
ment water-proof.

MOwING MAcmuuxs-sA. II. Cary-l, of Sandusky, Ohio:
	I chains time comubmisatmon of the remind portion of time tongume
or isounds, B B, wintlin time main or wised fmume, A, amsd
seat, G, said psinrts being arranged fssr joint operation,
in the snanner and for time psmm-posss set forth.

	ItAICINO ATTAChMENT COlt IiEAPEe5A. II. Caryl, of
Sendusky, 0mb: I claimn first, liaising thus rake in time
plane in os-isich it is inclined by means of tine devices
described, for the puirpose specified.
	Second, I claim opersinting the raking attachment back
and forth over the phathuorm by means of time snechanisna
substantially as set forth.
	Third, Inclining tine rake frons a vertical plane to
3~ correspond with time lengths of the grain hem, cut, by
se~ mmaeansof tine devices described.

COOLeRs FOR BeeweamesAdoiph hammer, of Read-
ing, Pa. : I chains time appiscatmon thereto of Chine move-
bie partitions, B B, rendered statiommary in the manner
substantially as described, and for the purpose set forth.
	INvALID DensGeorge H. Clark, of Pontaic, Mich.
I claim the construction and arrangement of parts de-
scribed, by which the head end of the foot portion of the
bed is made capable of being lowered ass-ay from the
patient, substantially as and for the purpose set forth.
	I also chains combining with said arrangensent the
slide, M, attacised to the frame to support tise vessel, as
~et fortii

	MAKING PAPER PULP FROM Ivoax-Wihliam N. Clark,
of Chinester, Coun. : I claim the using of ivory as stock
to musks pulp for the manufacture of paper.

	hANGING MiLL SToNesEdwin Clark, of Lancaster,
Pa. : I do not claim hanging the upper stone mu a bal-
anced rises or gimbal joint, as this has heretofore been
done.
	tisit I claim so uniting the rim which supports the up-
per stone to the frame of the mill by sliding blocks or
followers as to allow an upward play or automatic ad-
justment of the upper stone, and at the same tinse admit
the mssu. 1 Isand adjustment by set screws if desired, sub-
stantially as described.

	Sums s PUMisAbraham Coates, of New York City,
and Samussel M. Perry, of Brooklyn, N. Y. : We claim
time pecumliar usecisanusas by whicis we obtain rediproca-
timing muotion, between the pump and piston from each
move of a lever, isavimig a combined horizontal and lon-
gitudinal nuotion, the same consisting of the shaft,
time cross, tlsrou,hs which it passes, the universally
moving lever attacised by journals to the cross, at right
angles to thins sisaft, usud the two bevel gears or section of
gearsthe one attached to the lever, the otiser to the
shinaftor any other arrangement substantially the same
and for the purpose specified.

	SOCKET FOE BoLTsH. W. Cohlender, of New York
City: I claim imaving a disk or follower. d, placed with-
in time socket, and connected with a spring, B, arranged
in any proper uvay, so that as the bolt, A, is withdrawn
from the socket, fuse spring will press the disk orfohlow-
er against the upper or outer end of the socket, and
close the orifice tisereof, for the purpose specified.

	[The sockets of bolts often become so choked up with
sand or dust that time bolt cannot be pushed in. Tunis
may hue hindered by time above device, wisich consists in
a light spring and plate in the socket, os that when the
bolt is withdrams-n, time plate is pushed up, and closes the
orifice of the socket, tisereby keeping it clean.]

	EXPANDING SPECTACLE BomvsGeorge N. Cummings,
of hartford, Coun. : I claim the spectacle eye-former,
made in two parts, as described, the circumference of
time tms-o parts us-linen closed beine smaller than the eye,
a~d being expsnded by tise double former to the requir-
ed size, in the manner and for the purpose as herein set
forth.

	STREET-SWEEPING MACuIINE5John Criteluerson, of
Boston, Mass. : I claim the improvement in street-
sweeping nuachines us-hich consists in the combination of
tine asijustabie sliding bars traveling in the arc of a cir-
cle within the universai joints for dsbvin, the diverging
sisafts upon wimich the brusises are arranged. mvhereby
tise sweeping apparatus is adapted to streets of various
widths.

	BRunoxsCharies hi. Earle, of Green Bay, Wis. : I
do not cheim snaking a bridge in sections.
	Nor do 1 claim the attachment of sections of bridges
to their abutments by knuckle joints or hinges, as I am
ems-are that draw-bridges have been constructed os-ith
sumein attachments.
	Bust I chaises time supporting of those ends of the several
sections, B B, of the bridge wisich are not connected
uhirectly witin time abutmemsts, by attachning tisem to cap
pieces, c, or timeir equivalents, fitted to rise and descend
oms piers, in comubination with the attachment of the sec-
tions next the abutments, with knuckles or hinges
whereby time bridge is rendered self-adjusting, and ire-
vented being caiTied away by accumulations of ice,
floods, or otiser causes leading to lift the bridge from its
place.

	twiseoc brisuges are designed to supersede time ordinary
oneo in places ms-lucre tisey are liable to hue carried ams-ay
tsy flooslo or ice accumesulating round time piers, time ms-mole
of time bridge being capable of hem, lifted withs the flood
and again falling into its proper place withoist injury.]

	OPERATING VALVES OF STEAM ENGINeshlobert II.
Fletcher, of Brookiyu, N. Y. : I claisms tine arramingement
of tine slide u-aive, B, within time pistons P and K, and
valves. Z and K, with tiseir respective steam ways op-
ersintin~ togetiser in thine manner and for the piurposes de-
scribed.

	PAINTERS EAsELsGeorge Gillett, of Little York,
N. Y. : I chaimes the cosesbination of the three motions
obtained by time two semi-circles and the rotary motion
of time standard, togetiser us-iths this latches and not cues
in the semi-circles, to retain tIne position, and aloe as an
application to the easel or painting stand.

	SAFETY Fuse COSIPosITIONsEdwin Gomez and Win.
Mills, of Ness- Yos-k City: We claim the explosive com-
posunsi for safety trusins, fuses and similar purposes, form-
ed of thins ingredients and sumbotantially as specified.

	OPeRaruNse Wlxmuow SAsuJohsn C. Grant, of Salem,
Moses. : I uho usot dissius Imalancin, tlme sash by means of a
ejuring, as tisat is not ness-.
	Bust I dissimins combining with thus window frame and
easim, tise rack, a, geosro, b b, pulleys, c c, and spring,
ii, all arrusn,ed and operating susbst~ntiahiy as above set
fortis.

	FEAThERING PAesnm.E WGEELSLewis T. Howard, of
Snuiths Mihis, Miss. : I clams contracting the isuib of time
pedulis wheel, so as to dispense us-ith an outside bearing,
for tine pumrpose of enabling me to place the foetisering
us-mesh outside of the paddle wheel, and use any leneth
of connecting armess betoveen said feathering us-ineel and
the bumekete tisat may be deemed inset effective and as
set fortis and explained.

	TREATING COTTON AND LINER WASTEKiWIs Norton
Iloreford, of Cambridge, Mass. : I do not claim the use
of acid for the purpose of removing any of the mordents
or aetive resinous or coloring metters frons raw textile
or fibrous materials.
	But I claim the uoe of acid to dissolve metallic parti-
cles in cotton and linen factory waste, substanthaily as
described.

	TREATING Finusous AND TExTILSS SmzuuSTxNCesjuhius
A. Jiiison, of Pouuhkeepsie, N. Y. and Henry Whin-
field, of Ness- YorkCity: We claim the process of treat-
ing fibrous and textile substances in a permanent Va-
esussues for extracting coloring, grease, or other foreign
matters, susbstantieiiy as set fortiL

	Poucex-ING WIREC. Jilison, of Worcester, Mass. : I
clams causoimug time ms-ire tisat is being pointed to force the
cutter ams-ay hrom thue point that is being cut, but forcing
it covey, controlled imy a pattern os-hicis reguuiates the
focus and time tusper given to the ms-ire, the ms-hole being
acconaphisised by useans substantially such as herein set
forth.

	BELT TOOLDavid A. J. Lamson, of Clinerry Valley
Mass. : I do not ciains broadly the cousbination of a
noimber of lusupisments together, so as to form a compiex
or universal tooi, irrespective of the constrsmctisn and ar-
rmsngeument of tine parts forming suds a tool.
	Bsmt I chaimes tine comubination of the several tools speci-
fied in one instruiment, us-linen constructed and operating
substantially as described.

	VALVE GEAR FOR OSCILLATING STEAM ENGINEs
Johmu C. Pennington, of Paterson, N. J.: I claim a valve
gear for an oscii~ating oteans engine, composed of an ec-
cemstric set sumbotantially as described, and a slotted arc,
tise curve in ms-bids is concave toms-ards tine shaft, and
provided within a sliding pin, which is connected with the
vaive, or the equuivalents thereof, and this I chaim
ms-hsether the slot be long enough for reversal, or of such
length as usay be sufficient for running the engine in one
direction only.
	SPOKE ~LsCmmINeSamuel Lord, of Perry, Ga. I do
not claim, separately and apart from the arrangement
shown, any of the parts described.
	But I claim the vibrating frame H, operated as shown,
and arranged with the carriage, B, and saw, C, specifi-
cally as described, so as to operate conjointly as and for
the purpose set forth.

	[This usachine has the stuff which is to be cut centered
in a vibrating frame, the axis of which is oblique, rela-
tively within the stuff, and then by employing a traveling
saw and other contrivances, the spokes are turned out
direct from the stuff at one operation.]

	HARNESS FOE LOOMSGeorge Matson, of Chicopee
Fahis, Mass.: I do not claim making a harness with a
knot at the top as well as one at the bottom of each eye
thereof, as this has been done before. Whsen the eye is
knotted at the top and bottom there is double the fric.
tion and wear on the warps that takes place when the
bye is knotted only either at top or bottom.
	I claim the improved mesode of making a harness so
that its lease and knot shall be behous- its eye, and the
tlsreads of each hoop be caused to pass against one side
of their shaft or bar instead of being caused to embrace
opposite sides of it, namely, first knitting the harneso
with a lease at top and one at bottom, or one above as
us-eli as one below each eye, and subsequently dlsanging
thine upper shaft so as to pass it between the several loop
threads of the upper side of the harness in such manner
as to make both threads of each loop pass against one
side of the shaft.

	PREPARING TRACING MUsLINJesse K. Park, of Marl-
borough, N. Y. : I claim the employment of the oil of
the palma christi, or castor oil, alone or as an ingredient
in the composition for increasing the transparency of
tracing muslin, as specified.

	REGULATING TImE VELOCITY OF WIsuxs-WsuseELsFran-
dis Peabody, of Salens, Mass.: I claim as an improvement
in regumiating the action of wind-wheels, the sectional
disk operating in the manner substantially as set forth.

	TENOIGNG MACinsuREPerry Putnam and John B.
Crone, of Loss-eli, Mass. : We do not claim the parts of
our ninachins separately.
	But I claim their arrangement and operation spedifi.
cahly as shown, for the purposes set forth.

	WATCHMAKERS LATmLERoswell H. St. John, of
Behiefonteine, Ohio: 1 claim the construction of the
chuck formed of the jamb disk, fi d. the tubular clutch
collar or ward brush, e e, with the centering plate, ii,
and adjustable jaws, J K L, together and combinedwith
a keying mandrel, a 2 b c, substantially as shown and
described.

	PRESERVING ALKALIESGeorge Thompson, of East
Tarentum, Pa.: I claim the use of metallic boxes, con-
structed as described, and united with infusible cement,
for the purpose of putting up the caustic alkalies of soda
and potassa in small quantities, as described.

	DRmP POTS FOR SUGAR-HOUSESjohn TurI, of New
York City: I claim constructing tine pot of los-s metal
parts or halves, A A, formed or struck up in proper
sisape by any proper useauss, and connected together by
rivets, a, by brazing, or in any suitabie way, substan-
tially as described.

	[Tine ordinary di-ip pots in a sugar-house are either
earthenos-are or cast and sheet iron combined. The for-
mer have to be made very heavy, to prevent breakage,
and even then they are liable to fractusre, and the others
are liable to leak, from Chine diversity of their halves. The
subject of tisis patent is, boos-ever, made in two halves of
sheet metal, and brazed together, thus securing lightness
and durability.]

	ILLUMINATING GAS APPIEATUSCharles B. Warring
of Pouughkeepsie, N. Y.: I claimn first, The eye-piece and
Itulne in combination, substantially as described
	Second, I claim the peculiar apparatus described, for
conveying the gas Into che gas holder.

	BALL CARTEIDGeSLemuel Wells, of Astoria, N. Y.:
I claim Chine attachusent of a linard metal shinehi of a ball
cartridge to tIme bullet, substantially as described, by
muaking it smaller than the builet, and driving it into a
cavity in the rear of the bullet.

	[Tisis inventi~ consists in making the shell of the
cartridge of mesetal tube, fitting into a seat, and swaged
or otherwise to receive the bullet.]

	DIAPHRAGMS FOR PnoToeRAPmmtC CAMERASJ. B.
Werner1 of Neus- York City: I chaim the application of
an elastic dsaphragm sn photographic cameras for the
purpose and in the manner specified.

	BREWEES CooLastsAdam Wood, of Pittsbur~, Pa.:
I do not claim in the abstract, or separately considered,
the corrugated sheet metah bottoms, viewed only as a
usneano to compensate for the expansion and contraction
of the metal, for this is a well-known mode of obviating
this difficuuhty, and is employed in metal pieCes for
roofing and other purposes.
	Neither do I claim the cooling of the liquor by means
of cold water tubes with which the liquor is brousghmt in
contact, irrespective of the arrangement shinomun, for
such means have been previouSly employed.
	But I clalmes consCruc~ing the coolers in Curs parts,
A B, corrugated and placed in contact as shown, so that
cold ureter or air passages, e f, are fomund betuveen eald
bottomess, and the bottoms alious-ed to expand and con-
tract freely without injury, by which the bottom of the
liqumor within the cooler mesay be cooled as quickly as the
top, or the heat rapidly absorbed from both sutfaces,
and the cooling of the ms-hole mass or quantity therefore
greathy expedited.

	[Malt liquor has to be cooled very quickly after the
mops have been boiled os-ith it, or it would become acid,
and be rendered useless. This coshing has usually been
effected by pomuring the liquor into large, shallow
wooden vesseis, but even though this process was very
quick, acidification often set in before the whole was
cooled. The inventor of these coolers obviates this by
hinaving a double bottom of corrugated iron to the cooler
through which cold water is continually running.]

	RAKING ATTACHMENT FOR REAPING MACmumNesChris-
tian Yost, of Leacock, Pa. : I claim operating the rake,
A, by means of the device, D, the regulator C, in com-
bination with the semi-cog wheels, K L, and pins, N N,
arranged and connected substantially as set forthin

	Ts-m.e SETTING AND DISTRIBUTING MACmuINETinsoilsy
Alden, of Neur York City: I chains, first, The metlinod
esbotantiahiy as described for conveying the type to and
frons thse type cases, and the composing and setting
tables, conomoting of a type carrier in comes mination within
a series of conveysro, us-isich are capabie of receiving any
type indiscriminately, and also of receiving an indica-
tion representing the type so received, or that required,
whereby that type may be deposited into or taken from
use type cases, substantially as set fo IL
	Second, The described or any equivalent ninethinod of
attaching the conveyors to Chine carrier, by which they are
permitted to stop while deliversng or receinving type
uvithout arresting the motion of said carrier, subst n-
tiahly as set forth.
	Third, Giving to the conveyor or vibratory or tilting
motion mupon its central pin, whereby its gripping end is
made Co closely approach the place at which the con-
veyor is Co receive or deposit a type for the purposes,
and in Chine manner substantially as described.
	Fourths, In combination with the deviccs or nacciman-
ism for receiving and for delivering the types into and
from the type cases as described, or their equivalents, I
claim arranging the types edgewise in said cases, where-
by, for ail the types of a font, an uniform throms- or action
may be given to sab~mechanism.
	Fifth, In combination with the type clsennels, the
mechanism for pushing out the type, consisting of the
reck, pendulum lever, end propelling rod, and the
pusher upon the conveyers, or any equivalents thereof
as described.
	Sixth, In combination with the type channels, time
mechanism for preventing time stopping of a setting con-
veyer at a type channel when it is empty, or a distri-
buting conveyor at a cimannel us-linen Pull oftype, consist-
ing of the tilting bar, 5 7. time penduluam lever and rack
or equivalents as described.
	Seventh, The methosl of diochau-5in, the type from a
distributing conveyor muto Cbs type elsaunels, or of
causing it to bc reseived from suds channel into a setting
conveyor, consisting of thse dames, fi e, sn-i the puolser
plate, b 7, or equivalents Cisereof as described.
	Esghths, TIme useclsaniom los setting tine gripping bolt
upon the conveyors, and fom meheasun the same, consist-
ing of the otationary cans u 5 and er k lever, i, for
the settin, of said bolt, nd for tine rh - iumg tisereof, of
the latch, v 5, and cam or pun, y 6, ae describeul.
	Ninth, The method osubotautmaily as described of
effecting or ensuring the depesmt of e.nchs type into or time
taking thereof from an appuepumate case, eonsisting of
the excavated ring, m I, on any equism-uslent Ilsereof
which slmklh have upon it at om us in e scss Ippe case, a de-
vice indicative of the denommnatson of thins type contain-
ed in said case, and whinch device ohs ill casuse, at tine
proper place, an action of tIme conu eyom to receive or to
deposit a type, as the case may be sn accordance us-ith
any given set upon the conveyor, as set forth.
	Tenth, The stationary imindhined pieces, g 7, in combi-
nation with the grooves of time ring, us I, for restoring
the indicating points upon time conveyor to a zero or
starting point as described.
	Eleventh, The nuovable indicators, e 7, or Clineir equi-
valents, in combination with the grooves in the ring,
m 5, and with the shifting bars of time distributing me-
chanism, as described.
	Tweifib, Tine method of setting the distributing indi-
cators bymeans of the system of levers, B I, or equivus-
lent mechanism, so constructed and operated as to be
acted upon by a system of nieks uton the type, by
us-hich certain parts are allowed to be bronlst into
operation to move the indicators, in accorda~scs with
tIme plan or combination of nicko, and us-hereby time ap-
propriate case or piece of deposit of type is indicated
uponthe conveyors as described.
	Thirteenth, The graduated stop, c 4, in combination
urith the indmcating levers, B I, for regulating time feed
of the line of type, as described, end also in combina-
tion therewith me meuechaniens described under s 4, i 4,
and 1 4, for restoring said levers into position wimen
about to return for enemy setline, and for setting the
frame, y I, against its guide plate. ins described.
	Fourteenth, Thse arrangement of msuecbanism for
transmitting the movements produced upon time levers,
B 5, by time nicks in tIme type, and for effecting the
proper combinations upon the indicators, e 7, consisting
of tb6 detaining hevers, n 4, the bars, p 4, bar, 1 4, baro,
v 4, bar, y 4, and the connecting levers, g 4, together
with the operating cems umpon tIne shaft, j 4, or any
equivalent combination, uvisereimy the same results will
be produmced, as described.
	Fifteenth, Time mechanism for feeding up tIne column
of type, end for elevating the successive lines thereof
into the channel or equivalent devices as described.
	Sixteenth, The method of enga,ing and disengaging
the feeding paus-ho. consistin, of luanging lever, a I, in
combination with the frame, X, os-itis tIne means for de-
pressing the bolt, d I. and wills the ratchet h. ving time
engaging and disengegin, wedges as described.
	Seventeenth, I claim, in combination os-ith tine keys,
tIme arrangement of mechanism, us-inereby time separate
different signals represented by eacln of a great number
of keys may be produced by chess niumuber of indicators
as described.
	Eighteenth, The radially revolving registering levers,
in combination within the register wlseel, amud with tine
keys as described, or time equsivaleuts tisereef.
	Nineteenth, The independent registering apparatus
constructed as described, or its equivalent apparatus,
which will effect the recording of tins letters or signs, as
indicated by the keys, indeisendently of tine type carry-
ing apparatus sulustautmaily as set fortis.
	Twentieth, rime sesechcnismn for transnuitting tine indi-
cations from this register, consisting of tlse detaining
levers, K. o, or equivalents, in counbination wills time
setting mndmcators, and wills time register, as described.
	Tmventy-flrst, So combining the register amind time
setting indicators, f 0, uvith time type carrier that the
hatter shell effect tho movements of the register, to set
tine indicators in time to act upon the setting comsveyors,
and immediately tinereafter, effect tIme retreat of the
said indicators previous to the passage of a distributing
conveyor ss described.


	REEFING AND FUELuNG SAn.sG. XV. La Dew, of
Jersey City, N. J., assignor to lsimself mund Cisas. A.
Durgun, of Neus- York City: I do not iimit nuyself to any
particular medlinanism for operating time vertical rollers
around which the sails mo-md, as such mechanisus mesay be
varied.
	I claim the arrangemesent of vertical rollers in front or
rear of time mast, amid operated by mnechanism frons thus
deck of tIne vessel, and whereby I am enabled to operate
separately or together time sails on each mast froum time
deck, suibstantially as described and set forth, irrespec-
tive of the umechanisisa employed for working the verti-
cal rollers.

	SAW FILERJ. J. Near, of Oneida, N. V., asoignor to
Eli Near and Levi Vandasen, of Madison cousuty, N. V.:
I claim a dhaump to gripe the saw, osubetantially as de-
scribed, and camying hinged vibrating arms provided
us-ith springs for hinohohin, and operatin, Chine file, snubotan-
tially sn the ninanner described.

	ARRANGEMENT OP PASSAGES AND MEANS FOE WORKING
STEAd VALVES BY THE DIReCT ACTION OF STEASmIhar-
nabums Rusberts and Amex. Cruimubis (assignors to tlmens-
selves and Johmn Benson), of Brooklyn, N. P. : We are
ass-are tiset time valves of steam engines actuated by
steames pressure applied to pistons other tisan tine umain
working pistons have been umossi, and tiserefore uve dis-
dhaimes such ulSe. We are also ass-sure of thins patent of
Norman W. Wheeler, July 11, isiS, and we Clinerefore
claim no part. devies, or thining patented to hums.
	But we claim time arrusugeument of the steam ciscuneis,
a, b, c, whicls are opened and closed imy tins travel of time
nucin piston, conuectin0 the stemnues chest and cylinder as
described, mu conabination within tine pistons, J J, of equal
areas or Cimeir equivalents, substanthaily as described
and set forth.

	CONTROLLING COG Geta SAsuu DALANUrJolun Mac-
Murtry, of Lexington, Ky., assignor to Dani Wiehul, of
Fayette county, Ky. : I claim arran,ing time co, gemuro,
F ii, of the lower sash C, on the ohuaft, G, us-bids is
capable of turning vertically, and shishing isorizontally,
amind wimich lines crianged on its back emsd a loeking phuote,
I, wlinich slides with it, but wisicis cumunot tusrins us-iths it,
said plate Isaving a bar or cog, f, on its edge, us-bids
serves as a stop to hold boths or either of tine sastues ims
amy desired position us-hen geared to0etlser or separsuted,
subotentially as and for time purposes set fortim.

	BRICK MAcuuxesG. J. Waslsbusrn, (suosignor to
lsimoelf and Anson L. hobart,) of Worcester, Mass.; I
claim the combination of the umolds, K, of time frausme, A,
and mopper, D, constructed, arranged and operated to-
gether, substantially in time ninanner and for tIne purpose
described.

	hMPROVED BOOT AND SinGE SOLE CUTTERParker
XVelis, of Middletown, Mass., assignor to Sami. Moss-er,
of Boston, Mass. : I chinins the counshination of a esEter
or custters witim a yiehshing slide, substantially as set forthn
for the purpose specified.

	LOCmOSH. W. Covert, of Roxhury, N. V. : I chains
tIne combination of Chine dmsks, B B, ms-ills time cenes,
cylinders or disks, V V, in tine manner end for tins pur-
pose subst ntially as described.

	MANUFACTURING Suna-GLEsJ. B. Youung, of Auuguusta,
Me.; I claina vibrating tine sisingle bolt aboust en axis
hying in or near time plane of tins cut, and equally dis-
tant from each end of tine bolt.
	Second, I claim the sliding rod, K, and wed,es 0,
constructed and operating in the manner substantially
as set I ortls.
RE-ISSUES.
	EuAsTIC Goae CLOTIIChas. Winslow, of Lynn,
Mass. Patented Aug. 4, 1857: I am aware thuat an elas-
tic cloth has been made as a sisirred fabric. This, how-
~citntific ~ntctican+
Issued from the United States Patent Office
YOR THE WEEK ENDiNG SEPTEMBER 11, 1817.


[Rcpsrtcd ssllcuehly tsr tins Scieutmtlc Amcrmcems.]
(</PB>
<PB REF="IMG00023" SEQ="0023" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="19">



scientific ~n~e~rican+
ever, differs essentially from the elastic gore cloth,
made in accordance with my invention, as the edge of
the former is turned over parallel to the warp.
	I (10 not clahn the paculiar elastic cloth as made with
its filling arranged at an acute angle with its warp; nor
(10 I elaim the elastic as made of two layers of such cloth
combine(l.
	But I claim as an improved manufacture an elastic
hand or gore cloth, when made not only of a fabric com-
posed of a cement of India rubber or gutta percha and
two pieces of cloth, in wisicim the warp amid welt of each
piece are made to cross one another diagonally or at
ac(ste angles, but smith the edges of the cloth cut and
overlapl(ed, an(l cem~nted down in a line or lines out of
Isarallelism with either time warp or weft threads the
line of maximusms elasticity in the binding, making that
angle with time wart) as well as time weft, which is the
comuplinment of half the angle which they make with
earls other.

	AmmomimNam. SuccomersamJulia 51. Milligan, of New
Albany, hid. Patented Feb. 10, 1857: I claim the
bandage, a, substantially as described, provided with a
series of corns, g, and laces, b, or their equivalent ap
plied amid operated substantially in the manner an~ for
limO P051)0005 set forth.

	LooMsWon. V. Gee, of New Haven. Conn., assignor
to rise Atwater and Bristol Manufacturing Company,
messignors to rise Nashwannock Manufacturing Cons-
pany, of Last hampton, Ma~s. Patented Feb. 27, 1811
I wish it to be distinctly smuderstood that I do not limit
myself to the specimmi construction of parts, or their ar-
raugmimmeist, as these may be greatly varied by the sub-
otitmition of onecbanicmd equivalents.
	But I claim time privilege of varying them, so long as
I attaimi the same curls by substantially the same means.
	I claim, first, Mounting a loom with two distinct sets
of harness, each governing all the warp threads, for the
weaving of a web on one side of an intended button
hole or slit, mind capable of being thrown out of action
earls isy itself while time other set is in action, during tIme
process of weimving button holes, substantially in time
umaniser mini for time purposes before specified.
	Seconui, I claim connecting each set of harness cops-
ble of hieing tlmrown in and out of action, and governing
all time warp threads on either side as described, with a
bar or slide govered by a cam or catch or the equivalents
thereof, to throw one or tIme other of the said sets of har-
ness omit of action when necessary, substantially as de-
scribed.
	Third, I claim time combination of the mechanism be-
foci described for causing one set of hmarucas to cease its
idioms, or any equivalent timerefor, within another mech-
anions simbomantially such as is before described for deter-
usinimig the period dmmring which one set of harness shall
rensaimi out of action or lay dormant, or the time or mo-
ment mit which such harness shall cease to act or any
qiuivalent therefor; time combination acting substan-
timuhly as and for the purposes set forth.
	Fourths, I cimmium time combination of a slow moving
coon, or cams, or its or their equivalents for determin-
big tIme timmie and period or time or ~ during which
a set of Imarness shall be out of action as before set forth,
with harness substantially such as is before described,
osoimnt(d in ceP, each set governin all the warp threads
on one side of ii button hole, so thmal different sets of bar-
nese sissy ho in action or laying dormant at proper times
ansI for proper periods, tsr purposes substantially such
as are desermhsemi.
	Fittim, I cimmius a contrivance substantially suich as is
speciliesi for throwing lime take-np motion out of gear or
any equivalent therefor, for stopping time take-up, in
comubination smiths tsvo sets of hiarneos, each governimig
srarp threads, susbotantiahly in time manner and for the
purpooe described.
	And lastly, I claimim the combination of a slow moving
cain, sumbotantially such as is op cifled, or any equiva-
heist tlmerefor, with a mechanism for stopping or otmirt-
lug a tuske-mip motion, substantially as described, or any
eqsuivmilemst tiserefor, whereby thie time and period, or
tiuse or periosi of the stoppage or cessation, from action
of mm tak-sup unotiomi flimsy tie determined autonmatically
for time Ihuirhimes substantially as set ferth.

	SToxummmNu WuNOsOW SmuAsmes~Daniel Lloyd, (mis-
signor to C. I~. Kelly mind D. M. Ferguson,) of New
York City. Patented .7mm. 19, 11511 I claim first, Pro-
dumcing patterns on smindow shades in whmicim long or
contiummoums hues forims a pronminent feature, by means of
a lair or hut rs of stencils of time full size of the design,
prepmsred substantially in the manner set forth.
	Second, rho muodeof registering this stencils by the
muse of time plates, E, and pins, C, for the purpose of ad-
justing and readily adapting this stencil to shades, as
specified.

	Covrueo WATEU PorcoJonathan Ball, of Elmira,
N. Y. Patentesh December 11, 1841: I claim lining
mmmetahhic pipes smiths hydraulic cement, by means of a
cone, or ito eqimivalent, guIded through the pipe so as to
immy osm tIme cemiment of equmal thmickness, and with great
certainty and economy, substantially as described.



LFor the Scientific Ammierican.]

The Aquarium or Aqua-Vlvariurn.

	We have requested time gentleman whose
name appears at time emmul of this description to
write it for no, believing that it will prove of
interest to our readers
	I will commence by giving a brief account
of the history and theory of time Aquarium.
The first hint on this subject is found in a
book published at Leyden, in 1778, svherein
it is stated that plants immersed in water, and
exposed to time action of light, emit oxygen
gas. In 1833, a Mr. Danbnry, and in 1837 a
Mr. Ward, again promulgated the practica-
bility of supporting animal life by oxygen
furumislmed by vegetmubie growth. In 1852, a
Mr. Warrington and a Mr. Gorse almost tim-
ultaneonsly made experiments, which imave
resulted in time succeseful sustenance of animal
life in connection with vegetable existence.
	Time Aquarium, or Aqua Vivarium, is founded
upon time principle that aquatic plants, while
growing, emit sufficient oxygen gas for the
support of animal life to a limited extent; the
plausts, in their turn, forming their solid struc-
ture by means of time carbonic acid thrown off
by the animals in time process of breathing.
This is time theory; the application is as fol-
lows :A clean, tight vessel, witla glass sides,
is employed for a tank. The bottom is first
covereul an inch deep witla clean, coarse sand,
upon which I have found it best to put a thin
	covering of dark gravel. A rude rock-work
adds muds to time beauty of time tank and to
time comfort of its inimabitants. Over time
~	surface there should be scattered a few aquatic
~ plamitsif umarine, attacised to stones or shells;
if fresh water, having their roots buried in the
sand; and water is then added, and the whole
left for a week or more, until the plants are
acclimatized and are growing nicely. When
thus ready, the stock~~ may be added by de-
grees, until the proper balance of animal and
vegetable life is effected. In both marine and
fresh water Aquaria, a mucous or fungous
growth is soon developed, which may be kept
down by pond snails, or by the buccinum or
salt water snail.
	My first attempt was with gold fish (Cypri-
aus); but not being able to obtain the proper
plants, I stocked a confectioners glass jar
with a few other plants from the sea, and there
soon appeared a large number of small ani-
mals, which, viewed by lamp-light, were very
interesting. I have found that very deep and
narroav tanks, of various shapes, have not
succeeded so well as those having a much
greater breadth than depth. The tank which
I successfmally stocked avas of an octagonal
form, of thirty inches in diameter and about
eight in depth. Excepting the great difficulty
of rendering it tigist, this tault has succeeded
admirably. After being in use for a long
time, the rock-work is still covered svith vege-
tation, and crabs, minnows, eels and mollusca
still sport and wrangle in the home which
they have so long occupied.
	The aninmals which I isave found to thrive
most easily, and to accommodate themselves
most readily to their new home, are the
minnows or killy fish, the stickleback
(Casterosteus ts~achmuos), the shrimp, small
specumens of lobsters, hermit crabs, serpuli-
dans, small common crabs, eels, and star-fishes.
I have been told that time small sheeps-head
(sSarges ens) is also very good. Time patella,
the buccinum or sea-snail, the purpara or
whelk, and several varieties of crepidulas, have
also succeeded nicely. The scallop, one of
the most beautiful of aninmals, wimose iridescent
hues are marvelous in their brilliancy, I have
not been able to keep for any length of time.
The barnacle, also so interesting in its mode
of breathing and of catching its prey, Imas not
lived long. The spider crab, which the anci-
emits held emblematic of wisdom, and which is
noted for his fondness of dress and misehieg
has been found altogether too reckless of the
consequences of his pranks, and has beems
banished to a tank kept for unruly offenders.
No animal in a tank, however, has behaved
	The study (for study it is) of Aquaria is but does not seem-n as if there was any connection
yet in its infancy in this country; and we may between the tsvo.
reasonably hope that when those who are
close observers of Nature become interested in
this matter, we shall learn much more of the
private life of the inhabitants of the ocean
than we have ever hitherto known. Probably
no such facilities for the study of natural his-
tory have ever been offered as are now pre-
sented by the Aquarium. We have in ussr
rooms, where we s-nay examine it at our
leisure, a sort of section of the oceasm, avhoee
inhabitants may be exansined in their natural
abode, and under most favorable circumstances.
With suciu facilities it will be easy to learn
more in a few montims observation than we
have heretofore been able to learn by years of
examination of dead or dying specinsens.
	Tanks may be made of various forms. Time
simplest are made of confectioners jars or
any open-mouthed glass vessels. These will
answer very avell for small specimens; but the
best kind, most proper for the fish, and well
suited for observation, are those made in a
rectangular form, with four glass sides. It
has been found very difficult to make these
permanently tight, and at the same time free
from the taint of cement. This isas, how-
ever, been remedied, I believe, by some of the
dealers in tanks, so that they a-nay now be
purchased so constructed as to be put into use
without fear of leakage.
	In a fresh water tank we have no anenmones
nor hermit crabs; but ave have newts, the
stickleback which builds its nest beneath time
waters, time water-beetles, the tadpoles, and
numberless others, which fully compensate for
the absence of those that are found only in
sea-avatar.
	The speedy popularity of this piscatorial
and botanical institution the Aquariummm
is undoubted. All that is needed is to exer-
cise patient perseverance, regular attention,
and, above all, perfect cleanliness. No decay~
ad matter, animal or vegetable, naust be per-
mitted in the tank. A strict care to not over-
stock or erowd tha asihomals ,um,d s. lotorm-u-umna.

tion to overcome obstacles, will insure success;
and the Aquarium mviii becomesyhat it has
already become to thousands imi Europe-a
new pleasure.
CleAs. E. HAMMETT, Jui.

	Newport, II. I., Sept. 21, 1857.
[At the polite invitation of our correspon
within more propriety and been productive of dent, we were permitted, avhihe spending some
more amusement than the small species of time at Neavport this sunamer, to examine the
hermuit or soldier crab. Timey are am-er active,
and constantly ready to change their shells
for their own gratification or that of beholders.
They seldom pass each other without dis-
puting the right of avay, and yet never injure
cads other at all. A little incident will shosv
the pleasure that may be found in observing
them. While watching my tank, I saw a
hermit crab cogitating upon the expediency
of vacating his shall for an empty one lying
near Imim. After mature deliberation, ise con-
cluded upon the exchange, and suddenly pop-
ping his tail into the vacant shell, he croavdad
out a cloud of particles, probably of decayed
animal matter; this attracted the attention of
a shoal of minnows, avhich immediately at-
tacked the poor hermit, endeavoring to draav
him from his shell. But a new claimant im-
mediately appeared in the person of a common
crab, who clasped the imermit in his claavs and
attempted to carry him off by force of arms.
The minnows, unwilling to be thus defrauded,
noav beset the robber, avhile the hermit, taking
advantage of this diversion, crept quickly away
from the scene of strife; doubtless convinced
that there is hO place like home.
	Praavns and shrimps are also objects worthy
of admiration. No bird sails through th~ air
with more gentleness than these fish float
through the avatar. Star-fishes, hikeavise, are
very pleasing; they live long in confinement,
but are, however, quite greedy, and the larger
ones will soon destroy a stock of bucciusums.
Time small sheeps-head is said by those avho
have kept it to be very hardy. Many other
aquatic animals will doubtless be found to be
as suitable as those already named.
specimens to which he alludes; and ave baa-e
seldom spent an hour more pleasantly. Those
avho may feel a desire to behold the wonders
of the deep, in miniature, are referred to time
Aquarium-n of our correspondent, or to Bar-
nums Museum, in this city, avhere some good
specimens are on exhibition. Mr. Hammett~s
modesty forbids his imitimating in the above
article that he is prepared to furnish Aquaria
tanks of superior construction (an improve-
moist of his oavn) to smach parsons as may de-
sire to try their sitihl in raising the pisces,
molluscs, and articulates of the nsighmty ocean,
and to derive instru tion fronm oh serving the
life and habits of those curious creatures.ED.

The Teeth and the Beard.

	MEssas. EDITORsTime remarks of Den-
tist on the best useans of securing a healthy
denture have induced me to suggest avis ether
wearing the beard might not promote that de-
sirable result? hair is among the best non-
conductors; and to deprive the face of that
natural protection to the delicate nerves of the
maxillary region, must, it seems to me, expose
the teethm to the deleterious action of atismos
pimeric vicissitude.	S. Y. A. L.

	[We thinho that the growtlm or avant of
beard can onhy affect the teeth by protecting
them or otherwise from external cold, as the
teeth are formed and grow from the jaav avhicim
is separate and distinct from the surface of the
skin, in which are the juices that afford nutri-
triment to the hair. We know many persons
having naturally excellent teeth, avho are very
far from hirsute, and also persons avith
large flume beards and very bad teetim so it
Ahiminusus.

	A neav method of making this metal lmas
recently been patented in England by F. W.
Gerhmard. It consists ims placing fluoride
of aluminum in an iroum oven, mvhicii may be
heated in various invays. This oven is first
strongly heated, and on time floor thereof is
placed a number of shallow dishes. A number
of these dishes are filled with dry and well
poavdered fluoride of ahuminmam, and time re-
maindsr avith iron filings. Tisey are so ar-
ranged that all of those dishes ashichm contain
the fluoride are on all sides surrounded by
dishes containing the iron filings. The oven
is then closed and luted, and the iseat in-
creased to redness, after which a stream of dry
hydrogen gas is introduced. The effect pro-
duced is, that the hydrogan gas combines with
the fluorine, and forms hydrofluoric acid,
which acid is takemm up by the iron, and is
thereby converted into fluoride of iron, avhilst
the resulting alunminum reissains in the immetal-
lic state in the bottom of the trays contaisming
the fluoride.

The Electric Telegraphs.

	Time first overhead telegraph in Lolidon has
just been successfully put up by an enterpris-
ing firm in that city, to connect their two
places of business. The distance betaveen the
tavo estabhishmeists is about one-third of a
mile, and time avimusle space is traversed by a
single avire, suspended from pole to pole, at a
great elevation above the interusediate houses.
It is understood that another avill shortly be
erected by thine authorities, to connect the
police courts, time police stations, an dtheflre
brigade stations throughmout the metropolis, by
an economical system of overhead telegraph,
devoting orme wire to detective police purposes,
and one to fire purposes. The telegraph has
been used for nil thseee purposes in thmis country
for some time. Uncle Joima is, tiserefore, be-
mind Uncle Sam-n by some years in the domes-
tic odaptation of ehectricity.

Bronze Powder.

	The London Bsmildei says that Herr Konig
huas made a series of experiments to ascertain
time sminetlmod of prepariomg timis substance, hitimer
to a secret. From the result, it appears that
the several varieties of bronze powdered leaf
are eacim composed of nearly tIme same propor-
tioums of copper, zinc, and tin, amud that the
variation of color is owing to different degrees
of oxydation, which have been produced by
heating the alloy at different temperatures.

salt.

	An improvenment in the manufacture of rock
and ssa salt isas beeum patented in England,
avhich consists in fusing the rainy salt, and
keeping it for some tinme in a state of tranquil
fusion, decanting it into hot molds, or letting
it cool slowly; in this manner all tIme impuri-
ties are separated from the minsass in fusion, and
are elinsinated by crystallization by the dry
process, ax-bids corresponds with crystallization
by the avet one.

Tin Plates.

	Tin platesthat is, tin plates of iron dipped
into molten tin, avhich covers the iron com-
pletelyare manufactured in South Wales
and Staffordshire, to the extent nosy of about
900,000 boxes annually, equal to 56,000 tans,
and valued at over five millions of dollars.
In England, alminmos t every article of tin-
ware is formed from these plates. Nearly
two-thirds of the total manufacture are ex-
ported, principally froum Liverpool to the LTnited
States

Telegraphs in Brazil.

	A proposition has been an ade to the Brazilian
governammemat for the construction of a sub-
marine telegraph from Pernambuco to San
Pedro de Sul, communicating avith various in-
termediate places along the coast.

	Tlme longest railroad us time avorld is time
Gramad Trunk of Canada, 856 miles of avimich
are opals. When finishsed it will be 1,112 miles



lets.~~</PB>
<PB REF="IMG00024" SEQ="0024" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="20">~tji~ntif~c ~nwtican+
~j1du ~frbcnti~n~+
How to Make Tea Properly.

	The proper way to make a cup of good tea
is a matter of some importance. The plan
which I have practised twelve months is this:
The tea-pot is at once filled up with hoiling
water, then the I ea is put into the pot, and is
allowed to stand for five minutes before it is
used; the leaves gradually ahsorb the water,
and as gradually &#38; nk to the bott~m; the re-
sult is that the leaves are not scalded as they
are when boiling water is poured over them,
and you get all the true flavor of the tea. In
truth much less tea is required in this way
than under the old and common practice.
Exchange.

(4alvanized Iron.

	Iron is galvanized by the following process,
which is a purely metallurgic operation, and
has no connectio1~ with galvanism, as the
name would imply: it simply means iron
covered with zinc. The zinc is kept. melted
in an iron pan, and covered with sal ammoniac.
The iron, after having been thoroughly
cleansed hy muans of dilute acid and friction,
is immersed into the batis of melted zinc, and
stirred ahout until the surface has received a
coating of that metal. When cool, it is nearly
white, and may be exposed to the action of
the air or water without fear of rusting. It
is becoming almost universal in its applica-
tion, and is very suitable for the roofing of
warehouses and rough shanties on wharves.

How to obtain the True Meridian, or
Twelve OClock Mark.

	On a smooth, level surface, draw several
concentric circles. In the center erect a per-
pendicular, three or four inches high. Any
time in the forenoon when the end of the
shadow touches any one of the circles, mark
the place; in the afternoon when the shadow
touches the same circle, make another mark
--~h~u d~ lh~o fi-om these points thus oh-
tamed; at right angles with this line, draw a
line to the renter, which will be the true meri-
dian.
	As the sun is on the meridian at 12 oclock
only four times a year, viz., April 15, June 15,
Sept. 1, and Dec. 24, it will he necessary to
add or subtract as the sun is either fast or
slow in coming to the noon-mark. In this
manner the true time may be obtained almost
to the second. A table (this table may also
be found in the Americcsss Almanac and most
probably some others) for this purpose, and
sufficiently correct for all practical use, may
be found in the Family 6hristian Almanac,
published by the American Tract Society.
	Many persons think that a north and south
line traced by a surveyors compass is a true
meridian, hut this is a mistake, for a line
found as above indicated will vary from one
given by the compass. That this line is cor-
rect may be demonstrated thus :when a per-
pendicular four inches high casts a shadow
six inches long, the sun being on the east side
of the meridian, and when on the west side
it casts a shadow the same length, midway be-
tween the t~vo extremes will be the true men
	dian.	C. F. W.

	Ashwood, Tenn., Sept., 1857.

Improved Corn Husker.

	In countries like this, where Indian corn is
one of our staple commodities, any apparatus or
improvement on former apparatus designed to
facilitate the preparation of it for the market
must necessarily be valuable, and a knowledge
of this fact has caused much inventive genius
and adaptive faculty to be expended on a few
machines of the same class as that shown in
our engraving. Yet there are comparatively
few corn huskers, and in most places corn
husking is yet done by hand.
	The accompanying engraving gives a per-
spective view of the whole machine. D is a
S. The motion is received by a crank, C, short stout teeth are placed. This platform is
and a driving pulley, C, and by means of the moved backwards and forwards under the
belt, B, it is conveyed to B, on whose axle is rake, H, (which also moves up and down) on
fixed the deeply grooved cylinder, A. F is a the guides, T, and both platform and rake
concave knife, and E are spring wimes. G is obtain their opposite motion from the cranks,
a trough, wlsich casries the coin on to the C J and K K.
platform, I, over the uhole of whose surface The operation is as follows :The corn is

BACHiVIANS CORN HUSKER.

placed in the groove of A, with the butt to- This is a simple and seemingly effective
wards the knife, F, and projecting just suf- machine, which is not very liable to get out
ficient to be cut off; it is held in its place by of order, hut should it do so, its parts are
the springs, IE. It then passes into G, which easily accessible for repair. It may be mount-
delivers it on the platform, I, where the husk ed in a frame of wood or iron, as may be most
is torn off by the combined action of the sharp convenient. Patented July 14th, this year.
rake teeth and the motions of the platform and For further information and particulars, ap-
rake, and the corn turned out ready for ply to G. W. Bachman, the inventor and pat-
shelling. entee, Clifton Springs, N. Y.


LEFFERTS CARRIAGE STOVE.
F&#38; 2
	John \V. Lefferts, of Brooklyn, N. Y., is
the inventor of the simple means here repre-
sented for providing a source of heat, by
which the feet may be warmed in sleighs or
other vehicles. This stove, as it may he very
properly termed, is inserted in the bottom of
the vehicle, a principal portion being below
the ordinary floor. Fig. 1 is a perspective
view, and Fig. 2 a vertical section.
	A represents a case, which may be of wood.
B is an iron grate, which may be either plain
or ornamental. C is what may be termed a
treddle, by which motion is given to the ma- a smoke flue, to convey away the products of
rehine, or it can be done by the balance wheel, combustion. D is a bottom box, or casing
of metal, which projects through the floor. E
is a bar or adjustable stop, extending across
the bottom of D. F are annular vessels,
which serve as lamps, and will contain a
sufficient quantity of alcohol to support the
combustion for the length of journey desired.
F are wick tubes, and G a perforated plate,
which is mounted above, to distribute the
heated gas rising from the lamp. H is a cir-
cular plate mounted above G, and which is
continuous at its central portion, but has
large apertures near its periphery, so that the
heated gases ascending through the perfora-
tions in G are compelled to spread themselves
C













5
over the whole surface of the stove before they
can rise through H. It will be observed that
there is still another plate entirely continuous,
extending quite across beneath the grate, B,
and which prevents the possibility of any
flame or extremely heated gas rising to that
level, and ensures a just sufficiently intense
radiant heat rising through B to warm t.hse
feet placed thereon.
	The demand for such a device is very severely
felt, especially by those in whom the circula-
tiorm of blood is feeble, and by those who
start on long or cold journeys inadequately
dressed. Many cumbrous and troublesome
expedients are now resorted to, in the shape
of heated bricks, and the like, to supply an
evanescent heat. This device provides for an
an almost unlimited supply, if necessary, and
whatever the quantity of heat the lamp
is prepared to furnish, will remain continuous
throughout the journey, or until the fuel is
exhausted.
	For further particulars address J. W. Lef-
ferts, 120 Sands street, Brooklyn, N. Y., or
194 Bleecker street, this city.


Useful Information about Boilers.

	MEssas. EnmToRs.We run our works with
a high pressure steam engine; the water is
supplied by a well. For years the boiler re-
mained clean insideno incrustations what-
ever. A while since we made a change in our
mode of heating the water to be pumped into
the boiler, and caused the escape pipe to open
into the heater instead of passing through it,
as before. In a few months we found the
boiler-plates were giving away over the fire.
On examining the boiler, we found that the
oil from the valve chest and cylinder which
had passed through the exhaust pipe into the
heater, thence into the boiler, hind formed a
black carbonaceous crust upon the bottom of
the boiler in spots, to the thickness of three-
eighths of an inch or moreone spot being
just where the boiler gave way. Upon throw-
ing a piece of this scale on hot coals it burned
with a smoky flame, and with the odor of
fresh pork being fried. The oil we were using
was lard oil. We immediately altered ann
heater, and the boiler is as clean as before. I
write this for the benefit of others similarly
situated, and to prevent accidents.
M.	C. BeRLmcsGms.
	Great Falls, N. II., 1857.
	[The above communication was received
during the summer, and by accident mislaid.
We now publish it with pleasure, as it con-
tains information which will be valuable to
manyEDs.


The Money Panic.

	Owing to the difficulty experienced by per-
sons residin,, in many parts of the country in
obtaining bills of exchange on New Yorlc, the
usual enthusiasm in regard to competing for
our annual prizes does not seem to he evimiced
this year. There was never a better time than
the present for our friends to strive to cans a
prize of three hundred dollars, on smaller
sums, according to individual industry and
perseverance; and from the foreshadows of
coming events, we predict it will be found that
there has not often been a winter in which
one or two hundred dollars would have done a
person in moderate circumstances more good
than in the approaching one. It is an easy
matter for almost any one to obtain fifty or
more subscribers to the Scw~vlFmc AasmcaseAic,
at $1 40 per annum each; and last year one
of the prizes was awarded to a person who hind
procured only about that number.
	Remember, reader, that Fifteen Ilsosdred
Dollars will be distributed, on the 1st of Janu-
ary next, to those industrious competitors who
may have sent us the fifteen largest lists of
subscribers. Thin hard cash to pay these
prizes is already in bank, and no matter how
bad the times may become, we intend to be
sure in making our promises good, as we have
heretofore done.
	For inducements to clubs and for list of
prizes, see the last page.
20</PB>
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ii










NEW YORK, SEPTEMBER 26, 1857.

Poison and Adulteration.

	Happily for us, the day has gone by when
human life was of so little value that poison-
ers werc to be found in all classes or ranks of
society, and their deeds of villany were done
in the open day without the smallest fear of
detection. In the olden time, if one person
wished another out of the way, all he had
to do was to signify his wish to some one of
the numerous learned villains, who would do
it for a consideration. Chairs, clothing, food,
beverages, all were capable of being poisoned,
and persons knowing of no other means used
to wear amulets and charms to protect them
from the effects of the poisoners art. This
refined method of murder had hecome a study,
and was practiced as an art, as we know from
the notorious examples of Brinvilliers and
Borgia. We say, happily these days have
passed away, for the light of pure and glorious
science has broken in upon us, and now, as
sure as the most subtle poison is administered,
either by the microscopists minute vision or
the chemists magic test, will that same poison
again he brought to light, and made to con-
front the poisoner face to face. As a natural
consequence, direct and intentional poisoning
has diminished, but indirect and unintentional
poisoning has increased, and all from the want
of a little more knowledge generally diflused.
Take an example: not long ago in Scotland,
a party sat down to dinner and ate some
horse-radish, as they thought, and all died in
the greatest agony, for they had eaten aconite,
a most deadly poison, instead. Now these
two plants are much alike, and surely we
ought to learn their distinctive features, that
we may know for ourselves, and not trust our
lives to an ignorant cook.
	There are so many substances nearly alike
the one a deadly poison, the other perfectly
harmless, or perhaps beneficialthat we hope
in time to see some means adopted in every
city whereby all these bodies may be placed
in such a manner that all their individual
peculiarities shall be pointed out. Thus now-
a-days, from want of knowledge comes unin-
tentional poisoning, but from an evil applica-
tion of knowledge comes indirect poisoning,
and this is carried on through every branch of
trade, under the name of adulteration. The
London Larscet first directed the attention of
the public to this subject, by publishing analy-
ses of various articles of consumption bought
promiscuously in small and large quantities.
The exasniner-in-clmief was Dr. Hassall, who
has since published a very valuable work on
this subject, and from its pates we learn that
almost every article that we eat, drink, or
inhale, is more or less adulterated. Thus
coffee is mixed with chicory; tea with sloe
and tea leaves which have been previously
used; bread with alum, potatoes, and all sorts
of things; and cayenne pepper with red lead.
Pickles are made green by sulphate of copper
(verdigris); red lead and tumeric are com-
mon in preserved meats, tobacco and segars
are made up of cabbage leaves, apple parings,
and all kinds of rubbishs; but what is worse
than all is that many medicines are also mixed
with articles perfectly contrary to them in ef-
fect, although perhaps having some resem-
blance in outward appearance. If a physician
writes a prescription, and that, being made up
by a druggist of adulterated drugs, does not
act as the medical man expects, hut injures
the patient, is not the druggist or adulterator to
be held responsible? In England this question
has excited so much attention that there is an
agitation on foot to appoint local inspectors of
articles of commerce, who shall have the power
of indicting any one who sells an impure for a
pure article, and thus sending out not only an
acted lie, hut also great injury to the public
health. We may be asked, how does this
question affect us? We are not in England.
SOur storekeepers may be honest, while theirs
~cicntific ~nttrican+
are not. There is no doubt they rney be hon-	pended so singularly on one side of the up-
est but we must recollect that it is not mere	right, from the fact that the resistance of the
dishonesty that induces adulteration, but that	centrifugal force of the wheel to any alteration
principle of trade which prevails equally on	in the plane of its motion is greater than the
both sides of the Atlantic, namely, competi-	force exerted by gravity towards making it
tionthe desire to obtain custom by under-	alter that plane. And as to the ring revolving
selling, and the folly of the public in patroniz-	round the point of the upright, in a direction
ing the low-priced stores simply because they	contrary to that of the rotation of the wheel,
are low-priced.	he asserts that a wheel in motion does not
  We hope to see the people of this country	impinge on the same point of the axis that it
arousing themselves to this inquiry, and	rests on when in a state of repose.
making up their minds not to take poison in	  For instance, he observes, when averti-
any shape or form whatever.	cal wheel is set in motion, one-half of the body
	is acting in opposition to the laws of gravity,
	and the other half, so to speak, in the line of
	gravitationhence the unequal discharge of
	forces on the axis. On one we have gravity
	minus velocity. In so far, then, as the end
	on the axis is to be considered, the point of
	the heaviest impingement will be found on the
	 plus side of the wheel. This being the case,
	 the ring, which is free to obey any impulse
	 given in its own plane, must necessarily retire
	 before an excess of force exerted on the plus
	 side of the axis of the wheel.

	The centrifugal force theory is not new, and
Mr. MeCarroll is not entitled to the credit of
suggesting it; as to the revolving ring, the
explanation wants proog as there is no law in
nature which will enable us to say that the
ring which is free to obey any impulse given
in its own plane must necessarily retire before
an excess of force exerted on the plus side of
the axis of the wheel.
The Iron Age.

	Poets have given to each age of this worlds
history a typical metal, one which has charac-
terized and typified the leading features of civi-
lization at the time, and which, so to speak,
by its own physical properties and uses, has
reflected the manners, customs and habits of
the people then living. Following the idea of
the poets, we call this the Iron Age; for if
any period deserved such a name, it is that
portion of time which we call to-day
Iron is our strength and stay; without it,
the onward march of civilization must stop,
and the word Progress be cancelled from
our language. By a providential arrange-
ment Iron is universal in its occurrence in na-
ture, and by human ingenuity and talent it is
universal in its application. Let us look,
first, at its universal occurrence, and think
how vast must be the quantity in the world.
It is found in all the rocks that form the crust
of our globe, in greater or less quantity, as may
be seen from the prevalence of red and reddish
brown in their colors ; in all animals, for it
is I ron that colors the blood; in all fishes,
for it exists in the waters of the sea. Go
where you will, and turn in any direction you
may, Iron meets you at every step. There is,
however, another consideration, and that is
that we seldom find it in a metallic state, but
usually combined with some other element,
and this is providential also, for it stands as a
kind of mi0hty tempter, persn ding and urg-
ing man to exercise his talents, and to exert
his genius, so that that dirty-looking lump of
red earth called Iron ore may, by the work-
ings of a mans talents, ingenuity and genius,
become the steel pen with which we write;
and we say with truth that no one substance
on the face of the earth has done so much in
the development of mans latent powers, in
rendering our lives comfortable and luxurious,
and in advancing harmonious feelings, and
free intercourse among the nations of the
world, as Iron.
	Let us now turn to the universality of its
applications. We cannot turn our eyes or
thoughts in any direction without finding some
purpose of use or ornament to which this metal
has been successfully applied, and its peculiar
characteristics render it peculiarly adapted to
fill tIme wants of man. It is easily melted, so
that we can run it into molds of whatever de-
vice or pattern we wish; and when cold it is so
strong and firm that it seems to be a work of
nature rather than one of art. It is easily
welded, and by this process can be readily
joined in any part that is fractured, or it can
be bent while hot to any curve or shape. It
is tough, and will resist the strongest crush-
ing strain; is not easily acted upon by the at-
mosphere; so it is just suited for the position
we have given it in this nineteenth century,
in which, amongst our necessities and luxu-
ries, our real and imaginary wants, it holds
the place of the King of Metals.

The Gyroscope Paradox.

	On page 200, Vol. 11, ScIENTIFIc AsmEam-
CAN, we published, for the first time in this
country, an engraving of the above curious
toy. Since that time it has been discussed by
all classes and shades of thinkers, and as a
natural result, all sorts of theories and expla-
nations of it have appeared. Considerable
flourish has been given by some of our cotem-
poraries to a theory of Mr. MeCarroll, of
Canada, as probably the correct one. Re
shows that the ring and wheel remain sus
Time American InstiLute Fair.

	On Tuesday, the 15th, the twenty-ninth
Annual Fair of the above well known institute
was opened at the Crystal Palace. Although
the day was fine, the visiters in the morning
did not seem to be very numerous, but in the
eveningthere was a tolerably large assemblage
collected to hear the opening address by the
ilba. Mr. Meigs, whose annual appearance in
this character is as steady as the motion of
the planets. It was a plain, but common-
sense review of the progress of industrial
science during the past year. He made many
valuable suggestions with reference to agri-
culture and the mechanic arts, and expatiated
on the power of Great Britain to whip half the
world with her immense engineering power,
etc. After which a panorama of the Rhine
was unwound before the admiring eyes of the
juveniles, evidently much to their delight. A
band (which played lustily during the speech)
enlivened the evening with airsnational and
general; and so concluded the opening cere-
monies. We cannot help remembering the
old proverb, that if a thing is worth doing
at all, it is worth doing well, as it applies
with great force to the opening ceremonies of
the American Institute. Surely a speech
however gooddelivered at the end of a long,
narrow and inconvenient picture gallery, with
music playing and noises being made in all
parts of the building, could scarcely be appre-
ciated by the auditory; besides, the oration
came off half an hour behind time. We would
have it understood that this was no fault of
Mr. Meigs, as he was there in time, patiently
waiting for the Committee of Management to
make their appearance and hear him. When
the committee did arrive, (each with a scarlet
rosette in his coat to denote his membership,)
and gravely sat down, the proceedings com-
menced and ended with little or no edification
to any one. If the Institute intends to con-
tinue these official openings, should they not
be something worthy a great society, and not
the hurried, unsatisfactory things that they
are? We would advise them, in future, to
discontinue the opening farce altogether.

	Now for the Fair itself. From the present
appearances we think it will be one of the best
that has been had, although at first, from in-
ventors not sending in their objects of exhibi-
tion early enough, much space remains to be
filled up, which we have no doubt will be
speedily done. There is much in the way of
machinery, some unpacked and not set up,
and some little not yet unpacked; so that, this
week, it is impossible to give anything like a
detailed report, as very few departments, if
any, were completed at the time of our going
to press.
	There seems to be about the average num-
her of novelties in all departments, each
of which will be noticed in due time. As a
sign of the growing importance of this exhibi-
tion, we hail with pleasure the presence of a
six-cylinder printing press, manufactured by
Messrs. Hoe &#38; Co. for a German newspaper, the
N. Y. Stunts Zeitung. These famous presses en-
joy the hinhest repute, not only here, but also
in England, where the Morning Star, a
London daily newspaper, and that mammoth
of the press, the London Times, are, we believe,
shortly to be printed by its aid. When these
large manufacturers come in and show the
products of their genius and capital, we can-
not refrain from thinking that it is a very
healthy and prosperous sign.
	We observe, also, a new cotton gin which
is intended to gin the cotton in the field and
scud it out, not in the shape of raw cotton in
the bale, but as yarn from the plantation.
Should this be worth anything, it must be
worth a great deal; but even should it be
successful, and cheapen yarn at the South, wo
doubt not the active inventor would contrive
some method whereby he could successfully
compete with it. The machine was motion-
less, and, as no omme appeared to offer any ex-
planation of its operation, we are obliged to
defer our notice until another time.

	We also notice a case of saws and other
hardware goods from Messrs. Hoe &#38; Co., at
the end of the north transept. It is arran0ed
with taste and elegance, and the goods them-
selves are of the first quality.
	The motive power for the machinery is to
be supplied by three boilers, each about three
feet in diameter and thirty feet in length, and
ought to furnish a sufficient supply of steam
for all the purposes of the exhibition. Already,
on a pipe provided for the purpose, about a
dozen steam and pressure gages are put into
use, and more will probably he added. TIme
engines that are to effect the transformation
of steam into power are three in number, all
with horizontal cylinders. One is complete
and in action, and works beautifully, with a
motion as steady and true as the upfiowing of
the tide. It is sixty horse-power, and made
by Messrs. J. S. Bunce &#38; Co., of this city.
Of the others, one is made by Messrs. Hiuck-
lay &#38; Egrey, of Bangor, Me., and is now ready
for use. Its cylinder is twelve inches in diam-
eter and three feet stroke. TIme third (made
by Messrs. Corhiss &#38; Co., of Providence, R. I.)
is not yet put up. These engines will convey
the power to the shafting by belting in the
usual way.
	It is with feelings of pride that we look
around on the spectacle presented to us at thin
Crystal Palace: the merry face of the visiter
as he passes up and down; the anxious look
of the inventor, as a small crowd gathers
around his invention to hear him explain its
merits, and his look ofjoy when they signify
their approval of his effort ; everywhere, all
around, has the genius of man seemingly run
riot; and you cannot ask for anything of ordi-
nary use or popular appliance, for which there
cannot be found an improvement to supply
your want. In times of old, this fairy scene
of busy life and useful purpose would have
been regarded as the work of fairies and genii;
hut now, not having these beings at command,
we have raised another, which we call the
Genius of American Industry, and this we use.
It is this that nerves the strouc, man~ s arm in
labor, that supports the weaker woman in the
factory, that cheers and encourages the in-
ventor in his closet, and our sailors on every
sea; and greater than all this is the spirit of
genius which appears to rule in the opening
Fair. We shall gladly chronicle its pro-
gress since the gathering and dispersion of its
curiosities last year.
	Among other novelties, Robinsons Patent
Spring Stairs seems to attract general
attention, if we may judge from the numbers
we have seen running up and down them to
try their effect, and they are certainly a very	I
novel application of a spring. On the middle
21</PB>
<PB REF="IMG00026" SEQ="0026" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="22">


22
stringer of a flight of stairs, a spring is placed
under the top of each, and on this lies the stair
top, being divided and hinged on the sides, so
that when a person ascends the stairs lie has
the force of the spring to aid him in rising to
the next, and in descending, the elasticity of
the spring prevents the whole weight of the
body from comin~ forcibly on the one foot,
thins rendering gitting up stairs not snch a
fatiguing affair as in the ordinary solid stairs.
	II.	Getty, of Brooklyn, exhibits an Adjust-
able hammock Berth. This invention con-
sists in a convenient and comfortable mode of
arranodno the berths of ships. In the day
time, it folds away and gives more room in
the cabin; and at ni0ht, as it swings from two
pivots, one at either end, however much the
ship may roll, the occupier is perfectly quiet.
	On a table in the south transept there are
four models, each intended as an improvement
on the usual form of ships paddle-wheels; but
we are sorry to say they are not of much prac-
tical use, as the nautical public do not seem
to have suflicient confidence in them to
ever udopt such contrivances. The first
is composed of six floats, which, by means of
an eccentric, feather themselves when leaving
the water; and so large are the floats that
they nearly form a perfect drum. The second
is on the same general principle, having a
greater number of smaller floats and a larger
wheel. The third is a large wheel, having a
number of small solid floats; their section is
trian~ular, with slightly concave faces, and
they are placed on an axis, so that each can
rotate by itself when in the water. It is prac-
tically of no use ; the friction is not so great,
truly, but the floats would simply revolve
through the water, and exert very little pro-
pelling action on a ship. The last is a model
of a method of arranging paddles without em-
ploying a wheel, and although the model is
very small, it is almost as much as one person
can do to turn it; what power it would take
to turn a large one capable of propelling a
vessel, it is beyond our arithmetical capa-
city to calculate. On the axle are fixed
three eccentrics, arranged the same as a
three-throw crank; round these nre coup-
ling joints, in the lower half of which are
four paddles, radially placed, and the top
of the couplings are fixed by means of levers.
When the axle is turned, these paddles describe
an elliptical arc, one-half in the water, the
other out, and as four are always moving
through the water, the inventor evidently
thinks tIme ship would be propelled. It might
be; hut we should not like to pay the coal
bills which an engine would naturally consume
in its laborious efforts to drive the beat.
	Every succeeding Fair of the Institute brings
out a greater or less variety of devices which
have not the merit of novelty, to say nothing
of utility, to recommend them ; and what is
the more strange is that nearly all these old
traps originate in, or very near to, New York
city, the supposed centre of information. The
four wheels above mentioned appear to have
been born in this city within the past year.
Arguing from this fact, and from our observa-
tions in the past, we believe that, in general,
the mechanics and inventors of the country
are better acquainted with the progress ef in-
vention than tIme same class in the city. We
have reference to those who toil in the shop
and at the lathe. Our city mechanics usually
read story papers, and do not pay sufficient
attention to the current progress of mechanical
science.

~Crychnine.

This poison, which has of late become so
notorious in its abuse, (we cannot say use,) is
the most uncertain in its action on the human
frame; in sonic producing instant death; the
same dose in others only bringing on tetanic
convulsions, and in a lucky few no effect at
all; and this does not appear to have any re-
lation to the physical strength of the patient.
It is a whitish crystalline substance, and is
xtracted from the nut of a tree called strych-
iiie nux voseica. This tree grows in Ceylon,
is of a moderate size, and has thick shining

leaves, with a short, crooked stem. In the
fruit season, it is readily recognized by its
rich, orange-colored berries, about as large as
golden pippins. The rind is smooth and hard,
and contains a white pulp, of which many
varieties of birds are very fond; within this
are flat, round seeds, not an inch in diameter
covered with very beautiful silky hairs, and
of an ash-grey color. The nut is the deadly
poison which was well known and its medici-
nal properties well understood by Oriental
doctors long before Europe or America had
heard its miame. Dog-killer and fish-
scale are translations of two of its Arabic
names. The natives of Ihindostan often eat it
for months, and it becomes a habit, like opium-
eating, with the same disastrous results.
They commence with taking the eighth of a
nut a day, and gradually increase their allow-
ance to an entire nut, which would be about
twenty grains. If they oat directly before or
after food, no unpleasant effects are produced;
but if they ncglect this precaution spasms re-
sult. The chemical tests for it are numerous,
but only one or two can be relied upon as
thoroughly accurate.

Tue British and American Patent Offices.

	The London Engineer has the followine ar-
ticle, comparing the English and American
Patent Offices
We had no idea of the cribbed, cabined,
and confined nature of our own little nest, in
comparison with the vast aviary in which we
have been accustomed to be fleeced by our
Transatlantic friends, before we had the plans
drawn out on the same scale, or we think we
should have hesitated to make such an exposd
of our deficiencies; but the plans being pre-
pared and promised to our readers, we feel
bound to bring them to the light, let the con-
sequences be damaging as they may. We
had read of the sizes of the various rooms of
the American office, as stated in the published
description of it, and we had seen the plan;
and, further, we knew well the ins and outs of
our own Patent Office, but never, until the
plans were placed side by side, did the com-
parison appear so ridiculous. We do not say
that some of the closets of the American office
are as large as our patent library, but really
the space occupied by the entire building is so
vastly greater than our own little jewel in
Chancery lane, that we are at a loss to know
what use can possibly be made of it. It is
true that the plan of the American office, as
we have given it, is not yet completedone
portion having to be built, and other portions
being occupied by different departments of
state; yet for all this, the building was de-
signed for the Patent Office alone, and to the
purposes of this office alone will it very shortly
be devoted, so that we may justly conclude,
from the size of the entire building, what
views the Americans entertain of the im-
portance of the patent business of their coun-
try. In one of oni departments the space is so
confined that we have recommended the at-
tendants to wear spring shoes, so that they
would, after a little practice, be able to jump
over each others heads ; there being no room
to pass between the shelves and the backs of the
chairs of those sitting at the central table.
With respect to the store department, there is
only sufficient room in the corrugated iron
out-house to contain a few copies of each of
the printed specifications, which space will be
wholly inadequate when the specifications of
the patents granted under the old law are all
printed. As to a museum of models, it does
not exist, except in one of the boilers at Ken-
sington; and as recent events, to which we
referred last week, give signs of an explosion
in that quarter, no safety-valve having as yet
been discoveredit is not impossible that the
models may again have to be placed in their
respective cases, and consigned to the cellars
from which they were taken. Now, this is all
too bad, especially when we consider that the
patent fund, notwithstanding the excessive
fees of the law officers, has accumulated to the
extent of about 100,000. Patentees will
never, as was at one time suggested, have any
part of this fund returned to them, and why,
we want to know, would it not be as well em-
ployed in building a respectable office as in re-
maining in the Treasury? The business done
in our Patent Office is not less important than
that of the United States office; then what
makes the difference in the views entertained
as to the amount of space required for the
proper transaction of that business? The
real fact, we suspect, is that no difference of
opinion exists as to the space required, but
there are some undefined uses to which it is
supposed the accumulated fund may be here-
after applied, and which time has not yet re-
vealed. We beg to suggest that this expected
revelation, when it is made, should be nothing
more than that the whole fund, if necessary,
should be expended in building a new Patent
Office, containing ample space for every de-
partment, including a museum for models;
and we venture to hope, further, that the re-
velation will show that a situation near Chan-
cery lane is in every respect the best for such
a building.

tarbon.

Carbon is surely a kind of sylph, or sprite,
and that, too, of no ordinary sort. The cater-
pillar changes its coat, and becomes the gor-
geous butterfly, and this astonishing transfor-
mation is the theme of the fabuhists. Far
more wonderful, however, is the change which
takes place in a piece of charcoal. From a
black, opaque, and almost worthless material,
it changes to a brilliant gemthe diamond,
which even the stars are likened to. It cer-
tainly appears incredible that the diamond, so
transcendently beautiful, sparkling with more
brilliancy than the dew-drop at sunrise, should
be nothing else than a bit of charcoal, hut so
it is. Not here, however, does the chameleon
power of carbon rest, for by another change it
becomes invisible. In such a state it exists
in tIme brightest, purest air. By another
change it becomes the thick, heavy flakes of
smoke which we see roll out of ill-constructed
fluesthe blacks of London and Birming-
ham. Coal is but impure carbon, hence it is
often spoken of as the black diamond, sig-
nifying, however, as much the intrinsic value
of coal to man as its chemical relationship to
the sparkling gem. How the world would
fare without carbon it would be difficult to
say, for it forms the major part of the vegeta-
ble and animal creation. Tallow is white, but
it is composed of nearly all charcoal (that is,
carbon,) and the elements of water. So also
with starch, sugar, spirit, gas, chalk, shells,
bonesall contain carbon; they would, in
fact cease to exist without it. If we make a
mixture of sulphuric acid and sugar, a vol-
canic commotion ensues. When all is over,
and the black residue washed, it is found to
consist of nearly pure charcoal (or clmarbon, as
the chemists in France call it,) or carbon, as
the English write ithaving a dislike to thelm.
The purest carbon or charcoal with which
the chemists are acquainted is the diamond;
but even this valuable stone, when burned,
shows by its ashes that it is of vegetable
origin. Looking at carbon, therefore, either
in its black or white condition, and knowing
that it exists in the atmosphere around us in
an invisible state, we need not any knowledge
of chemistry or physics to enable us to come
to the conclusion that few substances exhibit
	the infinite power	of the Creator more than
	carbon.	    SEirminus PiEssE.

The Action of the Sea.

	That ever restless mass of water, called the
sea, or ocean, is the great agent iii producing
the physical changes of the globe. It is the
only workman who never restsalways work-
ing, always toiling, for the good of man.
It is continually wearing away the rocks and
beaches of portions of our coasts, and carry-
ing the matter onward in its currents, to form
islands or to add to continents in other places.
waves in wearing a coast by rememberimig that
in a hurricane the force of the waves are equal
to a pressure of forty tuns to the square foot
of coast surface. What ~an withstand this?
We feel that all our breakwaters and stone
walls must give way in time, how ver long
that time may be. The buildings of man
must fall before the forces of Nature.

Matheniatics.

	Mathematics is the most noble and ele-
vated sciemmee the human mind can investi-
gate or study. Each question that the stu-
dent undertakes to solve, when accomplished,
but leads to another and a higher, and thins
leads the intellect to consider and grapple with
the grandest realizations of triath in our uni-
verse. All other sciences (e acept those rela-
ting to living beings) are based upon it. As-
tronomy, its eldest child, and Mechanics, its
mcst useful servant, are but practical mathe-
matics. How grand and noble to calculate
the distances of stars, the motions of the
planets, and to prophecy tIme appearance of a
meteor! and how useful and glorious, as ad-
vancing true civilization to calculate the
horse-power of a steam engine, to estimate
the extent of a bed of coal, or to determine
the practical strength of iron ! All these re
done by the aid of this science, and the world
teems with objects for its investigation.

Loss of the Central America.

	This steamship left Havana for New York
on the 8th inst., having on board about six
hundred passengers, chiefly returning Califor-
nians, and $1,600,000 in specie, which was
lost beyond recovery. Up to Saturday, the
12th, they had a storm, which increased in
violence, and on that night the ship foundered,
when five hundred passengers, it is supposed,
were lost; the remainder were saved by vari-
ous vessels sailing in the vicinity. No more
particulars had been received up to the hour
of our going to press. This calamity will
sadden the circle round many a household
fire, and in place of the look of pleasure and
cry of joy which would accompany the ~vel-
come home of every one who had been toiling
for years in the land of gold, we shall only
see the look of anguish and hear the wail of
grief.

Time ~reat Eastern.

	At a late meeting of the Eastern Steamship
Company, it was announced that the vessel
may be launched in September, but that the
trial trip to Portlamid, Illaine, will be deferred
to the April following. Her total cost will
amount, including all contingencies, to about
three millions of dollars, of which, nearly one
remains to be met. Of this, $160,000 will
be provided by calls at present in arrear, and
to supply the balance o $490,000 the direc-
tort are empowered to borrow $500,000 upon
debentures.

Vesitilation of Cars.

	In traveling by railroad, the unfortunate
individual who chances to be in the cars all
night must either catch a severe cold, by hav-
ing one or more windows open, and in dry
weather nearly choked with dust, or else
poisoned with the malaria arising from the
burning of lamps and breathing of passengers.
Surely this can be remedied. It would cost
the railway companies but little to adopt some
of the known systems of ventilation which
would answer all the purposes required, and
they woEld be amply repaid by the increased
comfort of their patrons.
	The Parisian newspaper, Galignani, says
M. Babinet, the astronomer, has just an-
nounced to the Institute that, in consequence
of a favorable change in the currents of the
ocean, a series of years of heat has been en-
tered on, of which the present is the com-
mencement. We can only say that, if this is
The motion of the waves produces a sifting the first year of M. Babinets series of years of
action, and only the heavy matter falls to the warmth, it is the coldest that has been known
bottom, while light alluvial soil and small in the United States for a long time. How- ~
sand is held suspended in the upper strata of ever true this fact may be as regards Paris, it
the water. We can realize the force of the certainly has not affected New York.
~cicnIific ~nu~vican+</PB>
<PB REF="IMG00027" SEQ="0027" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="23">



c~C~tflt~fit ~rna~jcnn4
$30; E. P. B., of N. Y., 0; M. J. F., of N.Y., $200;
B.	F. S., efYt., $25; W. S., of 0., $30; E. B., ofWis.,
$33; U 11. D., of, $25: T. M. S., of Ga., $55; S. &#38; 
T., cf Conn.. $35; W. H. T., of IlL, $25; W. &#38; B.., of
Vt., $30; D. II. &#38; Ii., ofN. Y.. $250; H. S. B., of N.
Y.. $30; C. &#38; W., of N. Y., $00; J. P., of L. I., $20; T.
D.. of Csnn., $25; G. &#38; Co., of IlL, $25; B.. G., of Mass.,
$25; J. U, of La., $20; A. B. B., of Conn., $25; G. T.,
of N. Y., $20.

NoTeoc TO OUR CORRESVONDENTS.NO communication Specifications and drawings belonging to parties with
can receive our attention unless it is signed in full the following initials have been fos~varded to the Patent
with the name of the writer. Our friends are particu- Office during the week ending Saturday, Sept. 19, 1857:
larly requested to bear this rule in mind when writing D. W., of 0.; N. A. P., of Teun.; C. 0. L., of Vt.
to us. 11. 0. A., of La.; J. A. W., of Iowa; A. B. D., of Conn.;
	If our Magic Lantern friend will send us his ad J. P., of Wis.; L. &#38; B., of Mass.; J. W., of N. J.; L. T.,
dress, he will be answered in our next number, of Ky. ; U G., of Mass.; T. D., of Coun.; S. &#38; T., of
	H.	P., of MoYour plau fsr removiu~ the waste and Coun.; W. H. T., of Ill. C. F. B., ot 0.; B. F. S., ci
nightsoil of a city, without throwing it into the rivers, Vt.; Ii. T., of Ill.; G.T.,ofN.Y.; P.C., of Conn.
by having it carried in boxes to souse place outside and _________________________________________________
there left to decompose, to prevent the loisoning of the
water, is comparatively old, and was iractised in New TERMS OF ADVERTISING.
York some years ago. There is one very serious oh- Twenty-five cents per line each insertion. We re-
jection to such a plan, and it is this, that when the wind spectfully request that our patrons will make their
blows from the direction of the place of deposit towards advertisements as short as possible. Engravings cannot
the city, it is very apt to bring along with it odors the be admitted into the advertising columns.
reverse of pleasant, and pestilential in their nature. All advertisements must be paid for before in-
B.. C. L., of St. LouisThere are several patent sorting.
looms for weaving wire. The only one to which we can
refer you for a description is that of G. W. Smith, huts- IMPORTANT TO INVENTORS.
trated on page 170, Vol XI., Sos. As. AMERICAN AND FOREIGN PATENT
L B. II., of .Let your friend Mr. A. open a cones- A. SOLICPrORS.Mesors. MUNN &#38; CO., Proprie-
pondence with us in regard to his rejected case. We tors of the SCIENTIFIC AseaecAse, continue to procure
	patents for inventors in the United States and all for-
will do all we can for him. T hank you for those sub- eign countries on the moot literal terms. Our experi-
scribers,	cues is of twelve years standing, and our facilities are
S.	A. Arnold, of I3eloit, Wis., wishes to obtain the ad- unequaled by any other agency in the world. The
		long experience we have had in preparing specifications
	dress of Thomas Ling, who patented a pimp ill 1855.	and drawings has rendered us perfectly conversant with

	M.	J. ii., of N. YYour pile-driving apparatus seems lie mode of doing business at the United States Patent
to possess novelty, and we are of the opinion that you Office, and with most of tIcs inventions which have been
	patented. Information concerning the patentability of
had better send sic a sketch and description of it for cx- inveiitions is freely given. without charge, on sending a
	amination.	or drawing and description to this office. Con-
		  may be had with the firm, between nine and

	ii.	ii., of PaThe best material for polishing cast four oclock daily, at their principal office, 128 Fulton
iron is flour emery, first used with oil, and then dry. street, New York. Or branch offices are corner of F
	ansi Seventh streets, Washington, D. C.; No. 66 Chan-
The ordinary mode of proving a steam boiler is by Icy- cery Lane, London; 20 Boulevard Saint Martin, Paris,
	draulic pressure. Bsiler makers have pumps specially	and 3 Rue Therrsienne, Brussels. Circulars of informa-
		tion concerning the proper course to be pursued in oh-
	constructed for tics purpose.	taming patents through our Agency, the requirements

	George Tatwilor, of I)ayton, Ohio, wishes to get in- of the Patent Office, etc., may be had gratis upon appli-
formation in regard to this proper tince to cut Isis to- cation to the principal office or either of the branches.
	Communications and remittances should be addressed
	bacco crop. We have no peresual experience on this to	MUNN &#38; CO.,
	subject. No doubt some of our readers can inform bins.	No. 128 Fulton si., New York.
C.	J. S., of CounProbably the reason why you did Thie annexed letter from the late Commissioner of
Patents we commend to the perusal of all persons in-
not get our answer to your letter was because you failed terested in obtaining patents
	to sign your name to the communication. We require	 MessRs. MUNE &#38; Co. I take pleasure in stating theat
		while I held the office of Commissioner of Patents,
	this to be observed by all our correepsudents.	MORE THAN ONE-FOORTum OF AIR TilE iiU5INE55 OF TuE

S.	D. C., of WisWe do not now know of any epa. OFFICE came through your hands. I have no doubt that
cial encouragencent at present to attempt to bring out the public confidence thcus indicated has been fully de-
served as I have always observed, in all your inter-
new modes of signaling for railroads. There does not coursewith tics office, a marked degree of promptness,
seesca to be much interest on this subject among rail- skill, and fidelity to this interests of yoecr employers.
road men at the present time. Yours, very truly, CIIAS. MASON.
	J.	MeY., of C. W.Thank you. We will look out for August 34, 1857.
that catching fiche business leereafter. We consider ~~Chfl PREMIUMTHIMBLES FOR HUSK-
	humbug.	~4ptiUU lug Corn. Over 73,000 sold the first year.
	it a	The attention of this public is invited to GOULDS
	 Joshua Beal, Baton Rouge, La., wishes to procure the	Premium IIuskiiu~ Ticimble, hateicted May 13, 1856. Il-
best known machine for making large hominy; also, uc lustreted and described on page 3(12, Vol. 31, Scientific
Ancerican. These Thimubls~s have already guuined great
	power mill for crushing and grinding corn and cob for renown. We will give the above premium to any per-
feed.	son wico will produce their equal for the purpose for

A.	J. D., of CalWe do not discover anything pat which they are designed. Cireniars and saneohes sent
7 by mail on the receipt of 24 cents in stamps. Address
entable in your crusher. Springs having been applied	J. ii. GOULD &#38; CO., Alliance, 0.
to tics stamps, the substitution of a different kind of

spring cannot be considered an invention, and we die- 500 A~4 ENT$ WAN TED TO SELL TilE
reference Yankee Notion Sewing Macbins to every fain-
cover no ether esmentiahly novel feisture. In	ihy in time United States: refills with stand and treddle
to an artificial leg, wrets to Palucer &#38; Co., of this city. t $4. Sews tice tambour stitch with ease and precision,

We have not time to attend to your sutuicle commission, and ms .juist what every hoemoekeeper wants. A deposit
of $100 secures a coumuty. Address
L. B.. 0., of N. Y. I hops you will not denounce	B.. GODDAI~~ &#38; CO., New York City.
me as visionary for asking whether there is not a stand- __ _____________________________________
lug offer by this British Government for a macbins ~~T~IW CUMBERLAND &#38; CO. RESPECT
which will propel itself? Would our own government ~Vl3milycahl the attention of those interested in the
be likely to give anything for a machine of thus kind? rimnuing of railroads, steaucers, and machine works, to
their superior Patent Metallic Oil and Grease, as being
What would the concern be worth if it coumid lee mmsed as time best, and frouc its great dumrabiiity and consequent

a motive pow~r? My theory of the perpetuuah motion is economy, the chceapest oil for imubricating machinery of
	absslmstely iemfeilible. We answer firot, timat flue Jiritish	all kindswhich can be readily seen by a reference to
		ilceir circulars and their guarantee that it shall give
	Government is made up of too ucamey scientific men to	satisfaction in all cases. Thus genuine Patent Metallic
	permit it to act thee foohisim part of stimuicuting atteucpts	Oil can be had only of WM. W. CUMBERLAND &#38; 
to producs perpetual motion by offering a merize for its CO., New York Cumnberland Metallic Oil Works, foot
ol East 24th ot., sole manufacturers of I. &#38; Win. XV.
discovery. Second, the United States Government leas Cuumberlands Improved Patent Metallic Oil, under flue
	never proposed to get an impossibility, therefore it	peroomual superintendence of the inventor, wheose brand
		sluonhi be on every package. This higis clearacter which
	cannot probably be induced to take an interest in ouch	tide oil leas acquired in respect to its freeness from 5um,
	an invention. Third, it would be worth millions of	scuperior intl-friction properties, and durabihity, with
dollars if capable of being applied as a motive , theose who have used it, has caused a number of spiurioums
powur. imitations to be attempted, against which the public
Your theory may be all very nice, but thee only difficumhty are camutioned.
in it we deem to be that it cannot be redmuced to prac-
tics. Ittmovs this obstacle, and you ars sure of seine- NTOW OPEN AT THE CRYSTAL PALACE
	ce~s. Citizen,	.L~ Day and Evening, from 9 A. M., until 30 P. M.
		this Twentv-ninthu Auennah Fair of the American Insti-
	A	of Worcester, Mass., is iniormed theat thus tote. Thfs mmnequuaiiefi disphcuy of the products of our
laws are adequate to lurotect an inventor in his legah National Skill and Industry is now permuanenthy open.
Dodworties Cornet Band will be in attendance every
rights. 1t however, he misplaces confidence, and as- evening, and on Tuesday and Friday evenines of each
signs his right to irresponsible parties, it is an act of week will perform a jand Instrumental Concert by
his own, and this law cannot intervene. We are sorry programme. Champneys moving Panorama of the
Rhuine will be exheibited eache day at noon, at 4 P. M.,
to lesar of the case you mention. If ties patentee has and on Monday and Saturday evenings at 8 oclock.
been defrauded, be has his remedy by invoking thee pro- Members can procure their tic~kets at this Palace.
tectiomi of this courts.
T.	MeG., Jr., of OhioWe are unable to say pre- TO INVENTORSA GENTLEMAN WHO HAS
to whuat extent tic desirable to hi this i .Lhuadconsiderable experience and sumecess in thus
	cisely	u aow	ens eion- management and lisle of patent rights, offers leis services
hug of the steam line the cylinder; but great care mn2t to inc entoms on eqnitabhe teruns, or he wihh bumy a gsod
be taken in not allowing the principle of operation to patent, or an interest in one. References exchanged;
on those of flue advertiser are of thee highest standing in
	be carried too far, or flue hose of effect of the deane	coicuunercial and scientific circles. Address L. M. XV.,
	this other side of this pistomi will lee serioums.	Box 170, Tribumne office, New York.
	S.	A., of C. XV.Ws lucuve often known condensers	_____
to be applied witimout air pumunpo to high pressure engines P OWER MORTISING MACHINES OF OUR
manufacture are tics only ones capable of neortis-
to condense all sr time greater part of thus exhaust steam. lug hard wood with ease to the operator, and in which
We have also known of many substitutes for force hue has a perfect control of thee motion of thee chisel.
for supplying boilers. Your application of the Seven different sizes for sale. LANE &#38; BODLEY,
	pumps	manufacturers of wood-working machinery, Cincinnati,
	condenser is not patentable. XVe can give no opinion	Ohio.

of thee means by which you dispense with the force pump
  till you inform us what those means arc.	~ ECOND-HAND STEAM ENGINE AND
	K~ Boiler for Sale. One s-horse Upright Steam En-
	gine, Boiher 30 inches diameter, 24 feet long, nearly
	new, and in good running order. For particulars ad-
 Money received at the Scientific Anaerican Offics on	dress II. 5. MATHER, XYest Norwalk, Fairfield Cs.,
account of Patent Office business, tsr thee week ending	Coun.

Saturday, September 39, 1857

II.	0. E. f N. Y $30 G C. of N. Y $20 XV. B.- IMPROVED WREN CU  XVITHERELLS
I Pat eatState and Cosunty Ihighets for sale, and
of N. J., $30; P. C. C. Jr., of N. II., $55; G. B., of wrenches furnished to purchasers at the lowest mann-
Ark., $50; J. II., of Ind., $30; II. 0. A., of La., $2. ; ficturers prices. For engraving and description of this
of Vt., $25; J. A. XV., of Iowa, $25; J. D. 5, Wrench see Scientific American, No. 2, Vol. 12. Ad-
C.	0. L.,	dress	0. 0. WITITERELL,
~of N. Y., $55; A. A. N., of Ill., $33; B.. L. G.,ofConn.,	Danvihle, N. Y.
A NEW AND SCIENTIFIC INVENTION.
Dr. Cheevers Galvano-Electric RegeneratorPa-
tent issuced January 35, 385th. A circular relating to the
use of thus instrument, embracing a general treatise of
atony of the spermatic organs, the result of which tends
to softening the mneduhlary stubstance of which the brain
is composed, may be had gratis, and will be sent to any
address by mail bythesir indicating a desire to receive
it. All letters should be directed to Dr. J. CHEEVER,
No. 1 Tremont Temple, Boston.

E NGINEERING.THE UNDERSIGNED IS
	prepared to fuernish specifications, estimates, plans
in general or detail of steanesheipo, steamboats, propel-
lers, luigh and how pressure engines, boilers and ma-
chinery of every descriptuon. Broker mu steam vessels,
machinery, boilers, &#38; c. General Agent for Asheroft
Steam and Vacuum Ga~es, Allen &#38; Noyes Metallic
Self-adjusting Conical Packina, Fabers Water Gage,
Sewehis Salinometers, Dudgeons 1-lydrauhic Lifting
Press, Roeblings Patent Wire Rope for hoisting and
steering purposes, Machinery Oil of the ucost approved
kind, etc.	 CHARLES W. COPE LAND
	Consulting En5ineer, 64 Broad~vay.


lIT ASHINGTON IRON WORKSMALLERY,
TV RAINS &#38; CO., and HIGHLAND IRON
WORKSSTANTON, MALLERY, RAINS &#38; CO., of
Newburg, N. VAre extensively eu5aged in manufac-
turing all kinds of Steam En5ines, Machinery and Gen-
eral Mill Work. They are also partners of the firm of
STANTON, SNOXY &#38; CO., Car XVheeh Manufacturers
Newburg, N. Y., and are prepared to furnish Ijiaiiroad
Cars and Car XVheels of superior construction. From
thee cheapness of real estate and reasonable price of
labor, as well as their great facilities of transportation
by two railroads and the Hudson river, they are enabled
to fill orders at the lowest prices and on the most rea-
sonable terms.


M OI7LDER WANTEDONE THAT FULLY
	understands green and dry sand moulding, and
is capable of getting up all the necessary fixtures for
casting pipe in thus most approved manner. Must be
well recommended. Address Coombe, office of the
Scientific American, New York City.


I	RON PLANER FOR SALE.A SECOND-
hA ND Iron Planing Machems; icas been run but a
short time; will phane ten feet long, three feet cvide and
three feet 10gb. Cost $860; cviii be sold for $550 cash.
Address GEORG S. LINCOLN &#38; CO., Hartlbrd,
Coun.


	CREW BOLTS WITH SQUARE, CAR-
5I nags or Coucuter-snuk I-leads, Bolt Ends, Squmare
Head Wood Screcvs, Set Screws, Machine Scrscvs,
Ratchet and Breast Drills, Standard Steel and Shrinkage
Rules, for sale, by CHAS. MERRILL &#38; SONS, 556
Grand street, New York.


li/F ACHINERY.STEAM ENGINES, ENGINE
IVI	Lathes, Iron Planers, XVoodworth Planers. Sacv
Mills, and a variety of other machinery, for sale very
low for cash, to close consinmnents, by
A.	L. ACKERMAN,
103 Greenwich ut., New York.


I	A. FAY &#38; CO., WORCESTER, MASS.,
.1.	buuihd thus best ineproved XVoodworth Planers and
Mateleers. Patented Aug. 33, 1857. Wrouughut iron cut-
ter hesud and flexible nesuth-piece; will plane from /A to
4 inches theick.


FOR SALETHE ENTIRE MACHINERY AND
	Real Estate of thee Diamond Mills Manufacturing
Co., will sold at icubhic auction on the 20th of October
next, commencing at 30 oclock, A. NI., upon the prema-
ises, Lansingbuurgh, Rensselaer Co., N. Y., unless pre-
viously sold. For particulars address
A.	E. POXVERS, President,
Lansingburglu, N. Y.


L	AP-WELDEDlRON BOILER TUBES.
Pressers PatentEvery article necessary to drill
the tube-plates and set the tubes in the best manner.
THOS. PROSSER &#38; SON, 28 PlaIt ut., New York.


(~ IL! OIL OIL !FOR RAILROADS, STEAM-
.J ERS, and for machuinery and burning. Peases
Improved Machinery and Burning Oil will save fifty
per cent., and cviii not gune. This oil possesses qualm.
ties vitally essential for lubricating and burning, and
found in no other oil. It is offered to the public upon
the nuost reliable, thorough and practical test. Our
most skillful engineers and machinists pronounce it
superior and cheaper than any other, and the only oil
that is in all cases reliable and will not gum. The
Scientific American, after several tests, pronounced it
superior to any other they heave ever used for ma-
chinery. For sale only by the inventor and manufac-
turer F. S. PEASE, 61 Main ut., Buffalo, N. Y.
N. kReliable orders filled for any part office United
States and Europe.


NI EW HAVEN MANUFACTURING CO.
.l.~ Machinists Tools, Iron Planers, Engine and hand
Lathes, Drills, Bolt Cutters, Gear Csmtters, Chuecks, &#38; e.,
on hand and fimelehuing. These tools are of superior
qucelity, and are for sale how for cash or approved paper.
For cuts giving full description and prices, address
New Haven Manufacturing Co., Necv Ilaven, Coun.

HAt~S~SONIS 30 INCH GRAIN MILLS
PatentA supply constantly on hand.
Price $200. Address New Haven Manufacturing Co.,
Necv Haven, Coun.

LINDSEYIS ROTARY FORCE AND LIFT
	UMPThie best ~uump for railroads, engines,
wells and cisterns. XVarranted to raise cvater 100 feet
by hand. For dracrings and prices address
JAMES M. EDNEY, General Agent,
56 John street, New York.


li/I ONEY.AN INVENTOR, XVHO IS iN IN-
LVI different circumstances, will assigmin one-third of his
interest in a new, useful and patentable invention to
any practicah man cvho cviii sustain the cost of obtaining
a pat euL For particulars, address S. F. S., Albany
Poot Office, N. Y.


ULIiLEYS PATENT DRY KILNS, BY
B superheated steam, will drT grain, flour, and meal
without scorching, at a cost o two cents per barrel;
will also dry green inch lumber isa from 32 to 20 homurs.
Also, Evaporators for Boiling Chinese Sugar Cane, &#38; c.,
portable and cheap. Circuhars sent fr e on application.
H.	G. BULKLEY, Kalamazoo, Miche.

RE2&#38; E FOR MAKING ARTIFICIAL HONEY,
	good hooks and taste as that made by bees,
and cvbich does not cost over six cents per poundseat
for $3. Address N. U GARDNER, Peace Dale, B.. L


11~~MRISONS GRIST MILLS20, 30,16 AND
	48 inches diameter, at $100, $200, $300 and $490,
with all the modern improvements. Also, Portable
and Stationary Steam Enines of all sizes, suitable for
said Mills. Also, Bolters, Elevators, Belting, &#38; c:, &#38; c.
Apply to S. C. HILLS, 12 Phaft of., Necv York.


INSTRUMENTS.NEW CATALOGUE, THIRD
	Edition, with 250 lilmustrations of Matheematical,
Optiesh and Philosophical Instruments, furnished gratis
and sent by mail, free of charge, to all parts of the
United States.
C.	T. AMSLER, (formerly Amoler &#38; Wirz,)
635 Chestnut st., Phihadeidhia, Pa.


~ WISS DRAWING INSTRUMENTS.A
5-I fuhi stock of these cehebrated instrumneents always
on hand. Catahogne gratis. C. T. AMSLER, (formerly
Amnoler &#38; Wirz,) Philadelphia, P
PECKS PATENT DROP PRESSTHE
	best machine in use for stamping jewelry, orna-
ments, tinware, swedging iron, &#38; c. A supply of all
sizes on hand and made to order by the patentee, MILO
PECK, New Haven, Csnn. State righets for sale.


ORBES &#38; BOND, ARTISTS, 89 NASSAU
F street, New York, Mecluanical and General
Draughtsmen on wood stone, &#38; c.


~ TEAM ENGINES, STEAM BOILERS,
~J Steane Pumps. Sacs- ameul Grist Mills, Marble Mihis,
Rice Mills, Qumartz Mills for gold quartz, Su5ar Mills,
Water Wheels, Shaftin and Pulleys. The harcot as-
sortment of this above in thee conutmy, kept constantly
on heand by WM. BUIIDON, 102 Front street, Brooklyn,
N.Y.


WEST PHILADIOLPUIA CHEMICAL WARE
	Factory.4cid and fire-proof cs-are of all shapes
and sizes, up to 200 gallons, made to order; warranted
to resist acids of all kinds, and stand cheanges of tene-
perature, frona extrebee beat to cold.
	MORO PHILLIPS, 27 North Front st.


S	ECOND-HANDMACHINISTS TOOI.S-
Consisting sf28 Engine Lathes, 9 Iron Planers, 4
Upright Drills, Hand Lathes, Ciunek Lathes, Gear Cut-
tere and Vices, all in good order, and for sale low for
cash. For particulars, address FRANKLIN SKINNER,
14 Whitney avenue, Necv Haven, Coun.


5 OOO AGENTS WANTEDTO SELL
	fierce new and unequalled inventions, want-
ed and selling everywhere. My agents have cleared
over $20,000 on theene. Diplomas, silver medal and four
patents granted on them. For fosur stamps youll re-
ceive forty paees particulars. Best agency in flue coun-
try.	EPHRAIM BROXVN
	Locs-ehi, 7siass.

CAST STEEL WIRE DRAWINGAT TIlE
	Union Works, Paterson, N. J. Orders solicited
and carefully filled by ChAMBERLIN &#38; CO.


W OODWORTHS PATENT PLANING
VT MACHINES, of every kind and all prices. A
large assortucent on hand; and 1 am prepared to con-
struct any macheine to order, from ten days to tcs-o
weeks, and guarantee eacim machine to be perfect in its
construction, and give pureleasers entire satisfeuction.
The patent has expired, and cviii not be renecs-ed. I
make this business exclusive, manmufacturing nothing
but the XVoodcs-orthu Machuines, and for theat reason can
make a better article for less nuoncy; and within my fif-
teen years experience I fully guarantee cache machine
to come up to what I sun cvihhing to reconumnend, that is,
that each machine shall be more than equal to any
other manufactured for the canine price. JOHN H.
LESTER, 57 Pearl street, Brooklyn, N. V., three blocks
above Fuiton Ferry.


TEAM PUMPS, BOILER FEED PUMPS,
kIStop Valves, Oil Cups Cocks, Steaun and Water
Gages, sold by JAMES 0. ~1ORSE &#38; CO. No. 79 John
street, New York.

~ AWS.HOE &#38; CO.S PATENT GROUND SAWS,
5-J Plastering Trocs-els, &#38; c., can be head, wheolceahe and
retail, at tbs principal hardcs-are stores, at the sales-
rosucs of the manufacturers, 29 ansI 31 Gold street, or at
the works corner of Broonce, Sheriff and Coiuinebia ets.,
New York. Illustrated custahogues, contaimuing Irices
and information interesting to seuwvers generally, will
be sent by post on application.


	OF PATENTSNEW EI)I-
ATALOfIUE
	wing thus subiect or title of cc-cry p. -
tent granted in this country pi-lor to flue present year,
and flue number granted under each title. Also, tables
giving the whole nuneber granted, and thee number re-
spectively to the residents of cache State and country.
Very interesting and useful to the inventor and me-
chanic. Price 25 cents. Address
J.	S. BROXVN, XVashin0ton, D. C.

P OILER FLUES -ALL SIZES, AND ANY
191 eugth desired, promeuthy furnieheed by JAMES 0.
MORSE &#38; CO., No. 79 John street, New York.



T0 M~SImmd~t~u~ L~n for
Weaving Checks, Plaids, Gin5luams, Handkerchiefs,
Shawls, &#38; c.The advantage of this Loom over all
others heretofore in use, is, that on it may be woven, al-
most with the facility of plain print clotim, all kinds of
cross-bar fancy goods, of isny device or pattern, cehuich
can be woven by hand; the lift and drop motion being
so constructed that it cs-ill skip from shinuettic to shuttle
as may be required, and no ~lmuttis can be n7uadue to
operate but the right one; thereby preventing the 100-
sibility of mistake (by the weaver) in the pattern.
	These looms may be seen in operation in the Franklin
Facto , Wilmington, Del., whiners orders for them cs-ill
be received and promptly attended to by A. P.
OSMOND, Assignee.


W	ROUGHTIRON PIPEPLAIN AND GAL-
VANIZED, sold at wholesale, by JAMES 0.
MORSE &#38; CO., No. 79 John street, Necs- York.


E N(IRAVING ON WOOD AND MECHANI-
WiNG, by RICHARD TEN EVUK,
Jr., 328 Fulton street, New York, Engraver to flue Sci-
entific American.

PATENT RE-SAlVING
p EARSON CROSBYS
	5.Tue Crosby patent for resawing
lumber, having been re-issued April 28, 1817, and having
purchased the right to thee same for thus State of New
York and Northern Pennsylvania. the subscriber is pre-
pared to sell rights to use thee mkchmiues in the greater
portion of the above named territory, and also to furnish
the public with these macluines. Having re-built my
machine manufactorywheicle was destroyed by fire on
the 9th of Februuau-y lastI continue to manumfacture and
have on hand for sale, XVoodworths Pmtent Planing
Machines, from $150 to $3,501), and of a quality unequal-
ed by any other manufacturer. Also the separate parts
of the machine, namnehy, planing knives, side tools, side
cutter heads, cylinders, &#38; c., as well as thee above named
Crosby Re-sawing Machines. JOHN GIBSON
Planing Mills, Aibsuny, N. Y.

TO INVENTORS AND MANUFACTUR-
I ERS. I ~ooms as-ithe lower, for thus exhibition of
machinery, can be had in time Depot Buihdin~s, corner
of Elm and Franklin streets, New York. Thus location
is extreneely desirable for its proncimuence and conve-
nience to thee business part of flue city. Apply to T.
BENNETT, on flue premises.


STEAM PACKING,
~Ag~j~BELTING.
	HOSEThus sumperionity of thuese arti-
cles, manufactured of vulcanized rubber, is established.
Every belt will be crarranted superior to heather, at
one-third less price. Thee Steane Packing is made in
eve - variety, and warrantsd to stand 300 degs. of heat,
The hose never needs siiine, and is warrameted to stand
any required pressure; together with all varieties of
rubber adapted to meeb anical purpeses. Directions
prices,&#38; c., can be obtained by innail or otimeras-ise, ~st oar
	NEW YORK BELTING ANI) PACKING
COMPANY. JOIIN II. CHEEXEII, Treasurer, No. 6
Dey street, New York.~



W2i~iaA~ GRIFFITH~ESTABLISHED
and Warranted Extra Fine Cast Steel Saws, of the
various kinds now in use in the different sections of the
United States and the Canadas, and consisting of the
celebrated Circular Sacs-, Graduated Cross Cuif and
Temeon, Gang, Still, Pit, Segneent, Billet and Felloc
Saws, &#38; c., &#38; e. For sale at their warehouse, No. 48 Con-
gress street, Boston, Mass.</PB>
<PB REF="IMG00028" SEQ="0028" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="24">4.-


/




~cicwtific ~meri~an+

~citi~cc an~ xL.
A New Planet.

	The forty-fonrth of the minor planets was
discovered by M. Goldschmidt, at Paris, on
the 27th of May. The planet resembles a
star of the 10.11th magnitude. A new star
has been discovered in the nebula of Orion,
by M. Porro, at Paris. It was first seen by
him when trying an object-a lass of 20.5
inches in diameter, the eye-piece magnifyin,,
1200. lIe has again scen it twice, and his
observations have been since confirmed.

Steam Fire Emigines.

	We notice from the proceedings of the City
Council of Chicago, as reported in the Press,
that after a careful examination into the rela-
tive merits of the various steam fire engines,
an order has been given to Silsby, Mynderse
&#38; Co., of Seneca Falls, for one of Hollys en-
gines, which leas been recently tested with
satisfitetion in that city. A beautiful ilinstra
tion of it will be found in No. 10, Vol. XII.,
of the SCIENTIFIC A~IEuIcAN. We are decid-
edly in favor of the steam fire engine; and a
city true to its interests will never tolerate the
rcckless system so generally prevalent, espe-
cially in large cities. With good steam fire
engines, well manned, and a strong body of
mounted police, we believe millions of pro-
perty might be saved, which is now either
stolen by running thieves, or suffered to be
destroyed tlsrough the careless neglect of un-
disciplined fire companies.

Improved Device for Upsetting Tires.

	The accompanying en,,ravings represent
two views of the machine, Fig. 1 being a
longitudinal vertical section, and Fig. 2 a
plan or top view; the same letters refer to
similar parts in both. A represents a fiat bed
or plate, which may be of cast iron, and sup-
ported at a suitable bight by pedestals, a. On
the upper surface of the platen, A, guides
B are placed, between which ledges on the
underside of blocks, C D, are fitted and allow-
ed to slide freely. To the hack sides of the
blocks, C D, inclined oblique projecting
ledges, C D, are formed. These ledges ex-
tend from the top to the bottom of the blocks,
and are fitted in oblique grooves which are
made in a sliding plate, E, which is moved up
and down by means of a screw, U. The
upper part of tIme screw passes through
the center of a curved bar, F, which has a
thread cut in in it, in which the screw works.
IL represents a plate permanently fixed to the
bed, A. This plate has a slot made longitu-
dinally in it, and a head, I, is placed on it,
the lower part having a tenon on it that fits
into the slot in II. The head is allowed to
slide freely on the plate, H, and is moved
hackwards and forwards by a screw, K, which
passes throu~h an npright, 11, fixed to the
plate. The inner side of the head, I, has a
dovetail projection, J, in it, and a curved
plate, J, is secured to the head by ledges, J,
formed on the back of it, the dovetail projec-
tion being fitted between the ledges which
form a dovetail recess. To the ends of the
plate, H, and directly between the two blocks,
C I), an upright, Ii, is secured by being
dovetailed into the plate, L, which is curved
to correspond with J. The blocks, C D, are
attached to thee horizontal plates, M N, which
are in the same placie as H, these plates are
slotted longitudinally as shown at 0. Three
slots are shown, but more or less can be used
as desired. In the outermost slot of each
plate there are two heads, N, N, and M
i\l, The inner sides of these lseads are
grooved, and wedges, R 5, are fitted into the
grooves. Time innermost heads, M and N
have a slsarp edged jaw, M and N, at-
tached, and corresponding jaws, C D, are
placed on the blocks, C D, near their outer end.
	The operation is as follows :Suppose a tire
is to be upset, the thinnest portion of the tire,
W, Fig. 2, is heated and placed between the
~two curved plates, L J, the heated portion
being in the center of the plates. The plate, tire. These jaws serve as clamps, as they are
J, is then moved up to the tire by turnin,, the only beveled on their outer sides. The blocks,
screw, K; the wed,, es, II 5, are then driven C D, previous to clamping the tire, are dis-
downwards, and the jaws are driven into the tended or forced outward by depressing the

HAZEN &#38; GIBBS DEVICE FOR UPSETTING TIRES.

plate, E, and turning the screw, G; when the well as curved ones, by simply removing the
tire is clamped, the screw is turned in the op- curved bars, L and J, and placing straight
posite direction, and raising the block, E, ones in their place. Machines have been used
forces together thee blocks, C D, thus com- before for npsetting the tires of wheels, bnt in
pressin~ the tire, or as it is technically called them the blocks, C D, or their representatives,
upsetting it. Straight bars can be upset, as were brought to~ether by right and left screws,

Eig.2

and as these had to be cut very fine to econo- 1 scre~v can be placed either forward or behind
mize power, they soon stripped and became 1 the inclined ledges as may be most desirable.
useless in this hevention; however, when the For further information and particulars, ad-
power of the screw is used through the dress the inventors and patentees, Messrs.
medium of thee sliding plate, there is little Ilazen &#38; Gibbs, Homer, Michi,,an. The ma-
danger of this accident, and moreover the chine was patented July 7, 1857.


BRYANTS PATENT GAGE.
	Omer engravin~ shows a carpenters gage,
made under tIme patent Dranted April 11, 1857,
to Joel Bryant, of No. 8 Clinton street, Brook-
lyn, N. Y. The novelty consists in attaching
the points or markers, a, to holders, b, which
are provided within screw threads; by turning
thee buttons, c, the markers, a, may be either
projected or withdrawn from thee face of the
gage at pleasure. It matters not whether
thee markers, a, heave round points or knife
edges. One or more of the mnarkers, a, and
holders, b, may be rendered laterally adjust-
able by attaclement to a slide, D, as shown in
the drawing. This slide is moved by the
screw, B, the thread of which enters a suitable
nut at thee extremity of the ga0e.
This is a simple improvement, but it is one
of much utility. A gage thus neade presents
a threefold advantage. When two of the
markers is projected, it serves as a mortise
gage; when they are withdrawn it is a single
gage; and by removing the roused points and
substituting cutting edges (whiche may be
readily done) the instrument becomes a cutting
gage. The depth of cut given to the markers
may be regulated at will. Address the
patentee, as above, for further information.

	According to a calculation recently made
by M. Ponillet, it is fonnd that the quantity
of heat which this earth receives from the sun
in a year is equal to the combustion of a strata
of coal the diameter of the earth and seven-
teen inches th:ck.
Literary Notices.

	HALLS JOUENAL Os HEALTH, FOE SarTmeemmmmea, ceo-
tains, as usual, some good common-sense advice on sub-
jects connected with health. The editor says his sine ma
to show how disease nesy be avoided and that it is best
when sickness comes to take no medicine without con-
sulting an educated physician. We have a friend in
tiels city who has been for some time past apparentQ~
afflicted with a deranged liver. He lisa been very
friendly to the  fmmmily physician, and less gracefully
swallowed his potions, under the belief that the diseased
liver would soon be restored to its original soenduess
again. While laboring under a fit of low-aterica, we in-
vited 1dm to take a trip to the West in our com-
pany, and on .iourmmeyiimg to time land of corn and wine,
he accidentally fell into the society of an intelligent
Eastern physician, who had practised the healing art
for twenty-five years. Our friend made known his
complaint, and the physicisn at once informed him that,
after a long experience in suds cases, lee could give a
prescription which be thought would greatly benefit
him. Eager for relief; lee seized the paper upon
which time talismeesnic Imieroglypims were supposed to
be written, which, when carefiully manipulated by
tiec apothecary, were to restore the liver drive away
the sallow countenance, and once more refresh the ani-
mal spirits. To his surprise lee found time slip to contain
only these words Take no snore medicine 1 lie
took the hint and his experience less made him a wiser
man, and he less, we believe, a better liver. This pre-
scription may be of some service to other of our friends,
who watch witie iuterest for some newly-discovered
nostrum, which will at once, as if by neagic, restore
dilapidated Nature. To such we can recomunmend Hells
Jsmmrsmel of Heafflm.

	A NEW PisAss SN THE Isoes MANUFACTURE lS tiec title
of an illustrated pamphlet, of 84 quarto pages, contain-
ing valuable statistics and other useful and interesting
information concerning the growth and present condi-
tion of time iron trade, both here and abroad; togetleer
with 2CC engravings and descriptions (with prices) of
ties snumitifariommo manufectueres of time New York Wire
Railing Co., wicose agent, J. B. Wickersham, of 112
Liroadway, this city, forwards copies of the above valum-
able work, postage free, on receipt of four tieree-cent
stamps.

TO	MECHANICS, MANUFACTURERS,
INVENTORS AND FARMERS.

	In announcing the THIRTEENTH Annual Volume
of the SCIENTIFIC AMERICAN, which commenced
on thO 12th of September, the Editors and Publishers
embrace this epluortunsty to thank timeir numerous
friends and subscribers for time encouraging and very
ii cal support heretofore extended to their journal, and
they would again re-assure its patrons of their deter-
neination to render the SceReuTIrIe AemosecAN more and
mere useful, and neore and snore worthy of their con-
tinued confidence and good will. Time undersigned
point to time past as a guarantee of their disposition to
always deal justly and discrimiustingiy with eli subjects
of a Scientific and Mechanical character which come
within their purview.
	Having entirely discarded the system of employing
itinerant agents to obtain subscribers, time Publishers of
the SCIENTIFIC AMERICAN propose to offer

ONE THOUSAND FIVE IIUNDRED DOLLARS IN
CASH PREMIUMS

for the fifteen largest lists of subscribers sent in by the
1st of January, 1153, said prenmiums to be distributed as
follows
   For the largest List				$300
For time 2d largest List -	 -	-	.	250
For the 3d largest List	- -	-	-	250
For the 4th largest List	- - - -			150
For the Ciii largest List	- -	-	-	100
For the 6th largest List	 -	-	-	- 90
For time 7th largest List	- -	-	-	80
For ties file largest List	 -	-	-	- 75
For the 9th largest List	- -	-	-	60
For time lOtie largest List	 -	-	-	- CO
For the lithe largest List	- -	-	-	40
For time l2tle largest List	 -	-	-	- IC
For the 13th largest List	- -	-	-	10
For time 14th largest List	 -	-	-	- 25
 For thee 15th largest List	- -	- -		20
	Names of subscribers can be sent in at different times
and fromee different Post Offices. The cash will be paid
to the orders of the successful competitors immediately
after the 1st of January, 1858.
	Southern. Western and Canadian money will be taken
for subscripiisns. Canadian subscribers will please to
remit twenty-aix cents extra on each years subscrip-
thou, to preiuay postage.
	TERMS OF SUBSCRIPTIONTwo Dollars a Year,
or One Dollar for Six Months.
	CLUB RATESFive Copies, for Six Months, $4;
Five Copies, for Twelve Months, $5; Ten Comuies, for
Six Months, $8; Ten Copies, for Twelve Monthes, $15;
Twenty Coluies, for Twelve Months, $28.
	For all clubs of Twenty and over, the yearhy sub-
scription is only $1 40.
	The general chesracier of the ScIENTIFiC AMERICAN
is well knows, and, as heretofore, it will be chiefly de-
voted to the proneulgation of information relating to
the various MECHANICAL ASS) CmumusmcAu. ARTS, MANU-
FACTUREs, AGamcce.Tcasu, PATENTS, INvENTIONs, EN-
GINEERING, MILL XVORE, and all interests wimich the
hi.ht of PRACTiCAL Scesuscie is calculated to advance.
Itis issued weekly, in forum for binding; it contains
annually from COO to 005 finely executed Engravings,
and Notices of Aneerican and European Imiurovements,
together with an Official List of American Patent
Claims, pubhisheed weekly, in advance of all other
papers.
	lila thee aim of the Editors of the Scm STIFIC Amuzac-
CAN to present all subjects discussed in its columns in a
practical and popular form. Tisey will also endeavor
to nesintain a candid fearlessness in conebuetiug and ex-
posing false timeories and practices in Scientific and Me-
chanical snatiers, and thus preserve time character of the -
SCHSNTIiIC ACIERicAN as a reliable encyclopsedia of use-
ful and entertaining knowledge.
	~ Specimen copies will he sent gratis to any part of
the country.

MUNN	&#38; CO., Publishers and Patent Agents, 7
No. 128 Fuhton street, Now York.


p
OF TILE

SCIENTIFIC AMERICAN.
VOLUME THIRTEEN.</PB></P>
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TIlE ADVOCATE OF INDUS1IRY, AND JOURNAL OF SCIENTIFIC, MECHANICAL AND OTHER IMPROVEMENTS.
VOL. XIII.	NEW YORK, OCTOBER 3, 1857.
THE


SCIENTIFIC AMERICAN,
PUBLISHED WEEKLY

At No. 125 Fislton street, (Sun Buildings,) New York,

BY MIJNN &#38; Co.


0. D. MUEN, S. II. WALES~ A. E. BEACH.


	Reoponoible Agents may also be found in all the
principal cities and towns in the United States.

	Sampson Low, Son &#38; Co., the American Booksellers,
47 Lmmdgate lull, London. Eng., are time British Agents
to receive subscriptions for the SoseNviric AMOEiCAN,

	Single copies of the paper are on sale at the office of
publication and at all time periodical stores in this city,
Brooklyn aol Jersey City.

	TERMSTwo Dollars per annumOne Dollar in.
advance, and the remainder in six months.

	~2O~ See Prospectus on last page. No Traveling
Agents employed.



Improved Bank Lock.

	Tho art of constructing locks, and particu-
larly those designed for the protection of ex-
tremely valuable property, as the locks of
hanks and safes, has advanced rapidly, and is
yet advancing with very rapid strides. Al-
most every new invention in this line is, after
a few years or months, proved to be vulnera-
ble either to delicately sensitive and accom-
plished fi m~ ers, or to the more violent action
of drills and gunpowder. The lock now about
to be presented is claimed to be absolutely
proof to all the yet known means of opening,
except hy the proper key. The lock is per-
mutating or changeable, as is the case with
all good locks at the present day, so that by a
change of the position of the bits in the key
(which can no effOctOd by the owner on a ros~
seconds), the lock is rendered proof against
even tho mechanic who manufactured and af-
fixed it.
	The inventor is Dr. H. Isliam, of New Bri-
tain, Coun. lie loas studied the subject some
twelve years as an amateur, and is familiar
with all the locks now in use, either in this
country or Europe. The lock as here repre-
sented contains eight tnmhlers, and is of
about the ordinary size of the most approved
locks.
	The key hole is round. The bits, eight in
number, are each portions of gear wheels, and
are mounted in a pod which is so attached to
the stout shank of the key, that it is readily
separable. The bits alone are ordinarily car-
ried in the pocket of the cashier, while the
stump or stout handle may be left in any con-
venient place near the lock.
	In the process either of locking or unlock-
ing, the pod of hits is disconnected from the
stump, arid a stout plate of chilled iron or
steel cuts off all communication therewith
from the exterior. The hits are rotated by
the aid of a train of gearing whicla gearing is
worked by revolving the stump in the front
part of the lock. The bolt is also thrown by
the same agency. Tlaere are features in this
lock which differ materially from any other,
one of which is the fact that all the tumblers
are traversed to the full extent every time the
parts are locked or unlocked, so that the ordi-
nary means of smoking and the like are in-
effectual in furnishing indications of the form
of bits required. This arrangement consti-
tutes a feature of no ordinary merit, and gives
this lock immense advantages over any other.
	It is stated by the invesitor that there is
not a lock in use that will not show the shape
of its key worn distinctly upon the moving
parts of the lock, especially if the same form
of key is used for a considerable time; so that
a person having access to the lock when it is
unlocked, can determine the shape of the key
from the marks inside. If locks were correct
in principle, such would not be the case, and tumblers that moved inches instead of eighths
this fact makes it necessary that locks now in of inches, they could he picked; or if they
popular use, should be made light and deli- were made to move more easily, and made
cate, and of inferior capacity; for if they had strong and large, they could not he protected

ISHAMS BANK LOCK.
Fu~]
against pressure or marking. In other words He claims also, that his gear and pinion
when they are not light and of small capacity lock cannot receive upon its moving parts any
they are liable to be pickedwhen they are particular impressionthat the same form or
conmparitively safe, they get out of order. arrangement of the bits of the key can be
These facts can be demonstrated, used for ten years, without giving the slight-
2
est indication of the shape of the key, in the other key hole locks. The key does not pass
wear of the lock inside. Not a mark appears through the front plate of the lock, but the
different from what it would have been, if the key hole is partitioned from the inside, by a
key had been changed a thousand tunes, wall of solid metal thicker than the plate of
He claims that the lock is not hollow, like the lock, shutting out all communication with
the interior, beyond the middle partition.	secure against picking, instead of being less
The key hole, which is cylindrical, opens secure, like other locks.
into the safe or vault, and is thus secure from He claims it is safe against picking by press-
the operation of gunpowder. If this key hole ure or feeling, for two reasons. First, any at-
was six feet in diameter and the work made tempt made to move the bolt locks the tum-
strong in proportion, the lock would be more blers so that they cannot be adjusted to racaive
NO. 4.

the bolt; and any attempt to move the tumblers
when the bolt is fastened, is to no purpose.
Second, neither the tumblers nor the bolt can
be moved except when the key hole is covered
and all communication with the interior cut
off. It is safe froin marking or measuring, for
two reasons also. First, the moving parts of
the lock move to the same extent, whatever
the form of the key, so that not one of tlse nu-
merous changes of which the key is suscepti-
ble, leaves any mark or impression upon the
inside of tIme lock, corresponding to the shape
of the key. Second, when the key hole is open
there is no part of the lock that can be moved
in any way. The interior of the lock cannot
be reached by picks, as there is no access to
or communication with it through the key
hole.
	The moving parts are strong, and move
more by actual contact, without springs or de-
pendence upon friction, than any other lock.
	Being correct in principle, it can be made
large or small witla the same security arid
practicability. This covers the whole ground,
and makes it absolutely necessary to employ
the same key in unlocking that was used in
locking it.
	The front of the lock consists of two plates
the innermost of which is cast with the frame,
and the outermost is affixed by screws. Be-
tween these exists a space of sufficient thick-
ness to allow for the stout cut-off disc and
gear referred to. The movement of the tuna-
blers in the interior of the lock, is effected en-
tirely by rotating the hits.
	Fig. 1 is a front view of thu look, with the
outer plate removed. Figs. 2 and 3 are rear
views, with the back plate removed; Fig. 2
showing the bolt thrown out, and Fig.3 the
same with the bolt drawn in. Fig. 4 isa
transverse section of the lock, and Fig. 5 a
side view of the key and bits sliglotly separa-
ted. Fig. 6 gives an end view of one of the
bits, and also a similar view of the end of the
core on which the bits are mounted.
	A is the case or frame, A the front plate,
and A the back plate. B is the bolt, and B
stout plates screwed on 13, which form an exten-
sion of the same. B is a split or deep notcla
in the end of the extensions B, made in the
form represented. is b are notches on the un-
der side of B, and is is a vertical groove
across the face of B. C is a stout crossbar
between the two plates B B, and fixed to
each. This is is what is termed, by lock
makers, tke fence, and which, by meeting
the circular tumblers D, forms one of the
chief difficulties in forcing back the bolt B by
any improper means. D represents a nest of
circular tumblers capable of revolving sepa-
rately on the bolt which forms their center.
D represents a deep notch in theform repre-
sented, and d represent smaller gear wheels,
one of which is attached to each of the tum-
blers D. E is a slotted support for the shaft
of D, and which allows the shaft, and conse-
quently all the tumblers D, witla the gears d,
to rise and fall to a limited extent, by the con-
tact of the edges of tIme crooked notch B, as
the bolt B is thrown out or in. F is the stump
or shank of the key. F is a stout horn or
projection thereon, by the aid of which all the
mechanism of the lock is worked. G is the
core of the bits, G is a horn or projection on
G, and G the bits which are changeable in
position. I-I is a small gear wheel mounted
in the lock to receive the end of G, with its
horn G. This gear wheel H does not, as
might at first be supposed, seceice motion from
the pod of bits, but on the contrary serves to
convey motion thereto.</PB>
<PB REF="IMG00030" SEQ="0030" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="26">




~cicn~if~t ~vmcvican+
	Ii is the first gear wheel, which is mount-
ed in such manner as to surround the key
hole, and receives motion from the revolution
of the stump of the key. K is the second
gear wheel, which receives motion from K,
and conveys it to K This third gear wheel
K, is fixed on the shaft j, which passes
through the inner front plate of the lock, and
conveys the motion to the mechanism within.
J is a cam or heart-shaped wheel, fixed on],
and which, in addition to the fence C and
fence tumblers ID, prevents the bolt from he-
ing moved in either direction except at the
right moment. J is a stout pin projecting
from J, and which, hy catching in the groove
	b as it rotates, is the medium hy which the
bolt is thrown. K is a stout disc or wheel of
chilled iron or hardened steel fixed on the
same shaft j, so that it revolves therewith.
There is one hole only in K, and this coincides
with the key hole when the holt is folly
thrown in either direction, and in that condi-
tion of the lock allows the key to he inserted
or removed, but in all intermediate conditions
it completely stops the passage, isolating the
pod of hits from the stump F.
	L is a lever mounted on the center L. It
receives motion from K through the agency of
the pin L, Fig. 4, which projects through
from L to a curved slot in A. It is so opera-
ted on hy a stop or projection on K, that when
the wheel K is revolved in one direction to
throw the bolt B outward, it compels the lever

Fi25f. 7

or dog L to assume the position shown in Fig.
2 and when revolved in the opposite direction
compels it to assume that shown in Fig. 3.
This prevents any motion of the tumblers M
except while K is partly revolved, and conse-
quently the key hole is entirely stopped. M
are thin racks corresponding in thickness with
the gear wheels d. They are fixed to the
racked tumhlers or sliders M as represented,
which latter receive motion from the rotation
of the key hits C. M are simply the heat
extremities of M. Their office is to receive
the dog L and prevent the motion of M ex-
cept at the proper time. N is a knife stop
operated hy the inclined upper and lower
edges of B, as represented, and which, by
catching in the teeth of M, prevents the parts
from moving by any force while the bolt B is
being thrown.
	OperationThe hits G are all firmly se-
cured by simple means on the core G. The
whole is fitted by a spring catch to the stump
F in such manner that it can he readily dis-
connected by giving a quarter revolution
thereto. In locking, the key is inserted freely
into the key hole to the full depth, so that the
bits G are each over one of the sliders M,
	and the horn G is inserted in a corresponding
qr~ cavity in the small gear wheel H. The stump
 	 is now turned a quarter revolution, which
	 sconnects it from the hits, and allows it to
	he drawn outwards sufficiently to be entirely
clear of the cut-off plate K. The stump K is
now rotated, thereby giving motion by means
of the gear wheels K, K, K, to the shaft
j with all its attachments. The plate J re-
volves idly until the key hole is covered or for
about a quarter of a revolution, and then com-
mences to rotate the gear wheel II, which re-
ceives or has received the G or C end of the
pod of bits, and commences to turn the bits
C, and to move the sliders Ill; but as the
hits C are each carried only a half of a revo-
lution, and the gears do not coincide each
with the other, it follows that the said sliders
NJ are moved to unequal extents. After the
gear wheel II, and consequently the bits G
have performed half a revolution, their motion
ceases for a time, and the wheel J continues
to revolve. Meanwhile the cam J has re-
leased the bolt B and the pin J catching in
the a reeve, b commences to throw the bolt B
outward. As this movement progresses, the
nest of tumblers D is depressed, and the gears
d are made to lock into the racks M, a con-
nection which they are to maintain until the
bolt B is again thrown back to its first posi-
tion. The continued revolution of J finally
gives the remaining half revolution to the
small gear wheel H, and consequently to the
key bits G, which moves each of the sliders
M the remainder of its motion, and leaves
them altogether is~ the position shown in Fig.
2; the bolt B having previously moved out-
ward so far as to take the fence C entirely out
of the notches D, in the circular tumblers ID,
and allows these circular tumblers to be each
partially rotated according to the irregular
position of the hits G. The locking is now
complete, and the cam J is again in such po-
sition in the notch b that it aids the fence C
in preventin~, any throwing in of the bolt B
by any violence. The stump F is now thrust
inward (the cut-off plate K having made a
complete revolution,) the connection with the
bits is again made by the spring catch, and
the whole is removed.
	The unlocking consists in a repetition of this
process performed in the reverse direction,
with the bits Gin precisely the same i~emrtve po-
sition. Any change of these parts, or the in-
troduction of bits faulty in any respect, will
fail to adjust the tumblers D in precisely the
position they were in at first, and if one only
of these be rotated too far, or not far enough
to cause their notches D to coincide exactly
with the motion of the fence C, the unlocking
cannot be performed. These tumblers D are
not accessible by any known means, except
through the means described.
	For any information, please address Dr. H.
Isham, New Britain, Conn., or James Talcott
Esq., 57 Liberty street, New York.

Coal.

	As a kind of answer to the question What
is it ? published by us last week, we transcribe
the following description by J. A. Phillips,
an English metallurgical chemist
	Lignite, or brown coal, is found in that por-
tion of the earths crust called by geologists
the tertiary formation, and it varies very
much in its appearance and composition, and
has consequently received from mineralogists
several distinct names, such as brown coal,
bituminous wood, common lignite, and earthy
lignite. Of these, the former very much re-
sembles turf in its nature, consisting of woody
matter, which in many instances so far
retains its original structure as to admit
of the recognition of the class to which the
tree belonged. This kind frequently loses
about twenty per cent of water at a heat of
2120 Fah., and yields from thirty-five to forty
per cent of a brittle coke resembling char-
coal.
	The second variety, or bituminous wood,
although it still presents, to a certain degree,
its woody texture, is generally of a very dark
brown or black color, and more closely resem-
bles in its nature some varieties of mineral
pitch than the wood from which it was origi-
nally formed.
	At Meiszner, in Germany, a deposit of bitu-
minous wood is covered by a stratum of basalt
more than three hundred feet in thickness, and
occurs in flattened fragments which still re-
tain the laminated structure of wood. Its
transverse fracture is conchoidal and glossy,
its specific gravity 132, and the usual color
of the substance either dark brown or black.
When burnt, it decrepitates on the fire, giving
off a very disagreeable odor, and leaves about
fourteen per cent of ash.
	Common lignite very much resembles in its
appearance coals from the secondary forma-
tions. Its usual color is black or brown, with
a compact structure and irregular fracture.
Sometimes the fracture is conchoidal and
brilliant, and in this case the substance is
often called jet, although the true jet from
which ornaments are manufactured is not a
variety of lignite. This substance contains a
less proportion of water than the variety
known by the name of fossil wood, and has
an average specific gravity of 120. When
heated, it gives off inflammable gases, together
with acid and tarry matters; but the result-
ing coke in most instances retains the form of
the fragment from which it was produced.
Less frequently the lignites may be so far
softened by heat as to run together and cake
on the fire, or even to assume a tarry consis-
tence; but these specimens are only to be ob-
tained from deposits occurring in the fresh
water limestone formations.
	The earthy lignites, as their name implies,
contain a large proportion of incombustible
foreign matter. They have a dark brown
color and hackly fracture, and, from the
quantities of iron pyrites and clay which they
contain, are sometimes burnt, for the purpose
of manufacturing alum and copperas from the
ashes they thins afford.

Crystallization.

	All the metals are capable of assuming,
under favorable circumstances, the crystalline
form. Many of themparticularly gold, sil-
ver, copper and bismuthoccur crystallized
in nature, and are found either as cubes or
octahedrons, or in some of the derivative
forms; Ainimany is~ Lowaear~ nn~ exception
to this rule, and affords rhomboidal crystals.
In order to crystallize a metal artificially, it
is sometimes sufficient to melt a few ounces in
a crucible, and, having permitted it to cool on
the surface, to pierce the crust formed and
allow the interior to flow out. By this means
very beautiful crystals of bismuth may be ob-
tained; but in the case of some of the less
fusible metals larger masses and slower cool-
ing are necessary to produce this effect, and
consequently these are never found in a
crystalline state unless considerable weights
have been fused, and allowed gradually to
cool, as sometimes occurs in the furnaces in
which their metallurgic treatment is effected.
	It also frequently happens that one metal
may be precipitated in a crystalline form by
placing a strip of another metal in the solu-
tion of its salts. In this way silver is deposited
by mercury; and a piece of zinc placed in a
solution of acetate of lead precipitated the lat-
ter in feathery crystals. Cold is occasionally
deposited in this form from its ethereal solu-
tions, and a stick of phosphorus produces the
same effect. Nearly all the metals yield
crystals when deposited from their solutions
by electric currents of feeble intensity, and it
is doubtless to this action that we are indebted
for the many beautiful specimens of the native
metals which enrich the cabinets of mineralo-
gists.

Water and Morals.
	A very slight declivity suffices to give the
running motive to water. Three inches per
mile, in a smoo~ h, straight channel, give a
velocity of about three miles per hour. Now,
what is true of water is equally true of morals.
The best of men only need a slight push
from adversity to obtain a downhill momen-
tum. Be careful, therefore, how you lose
your equilibrium.

	To carry a Collins steamship from New
York to Liverpool requires eight hundred
tons of coalenough to last an ordinary
family forty years.
The Worthlessness of Gold.

	It is stated by many of the survivors of the
Central Aesericas passengers, that there was
seldom so large an amount of money owned by
passengers as was in the case of those who
came by the Ceetral America. Many were per-
sons of large m cans, and there were very few
whose immediate wealth did not amount to
hundreds, while numbers reckoned their gold
by the thousands of dollars. The greater por-
tion of the passengers were returning miimers
some coniing hither to invest the capital they
had realized in hopes to live a life of greater
ease as the result of their industry, and others
to get their families and once more go to the
land of gold. But as the storm continued to
rage, less and less of gold was thought of tad
when, on Saturday, it became evident that
they were likely at any moment to be buried
beneath the waves, the wealthy men divested
themselves of their treasure belts and scatter-
ed the gold upon the cabin floors, telling those
to take who would dare to test its weightas
a few ounces or pounds might carry them to
death. Full purses, containing in some in-
stances 2,000, were lying untouched on sofas.
Carpet-bags were opened by men, and the
shining metal was poured out on the floor
with the prodigality of deaths despair. One
of the passengers, who has fortunately been
rescued, opened a bag and dashed about the
cabin $20,000 in gold dust, and told him who
~vanted to gratify his greed for gold to take it.
But it was passed by untouched as the veriest
dross. A few hours before he would have
struck down the man who would have attempt-
ed to touch a grain of that which he now
spurned from him.

Lavas.

	Lavas are tIme mineral substances rendered
liquid by heat which flow from volcanos of
the ~preseat epoch, and are generally found
extended in the form of thin strata, or appear
as a coating on the declivities of the moun-
tains from which they have been ejected.
	The name of schist is applied to miner
~	~~essing tne property ~ hying ensily
separated into thin layers, and which present
the foliated appearance observed in common
roofing slate. The term sand is applied to
small disconnected particles of quartz. When
these grains are united by a siliceous cement,
the resulting rock is grit, or  sandstone.
This is sometimes found of a white color, but
is more frequently stained by some metallic
oxyds, as in the old red sandstone, which ewes
its color to the presence of peroxyd of iron.

The Great Eastern.

	A Canadian paper says : We are au-
thorized to state that this steamship will be
launched in the first spring tides of next
month (October). The day is not as yet ab-
solutely fixed, but this important event will
probably take place on Monday, the 5th of
that month. The tides will be highest on
that day.

Gas from Peat.

	The first experiment on this continent of
lighting a city with gas made from peat, was
tried in Portland, Me., a short time since.
The light was clear and brilliant, and few of
the citizens were aware that coal was not used
as usual.

	A New hampshire correspondent of tIme
Boston Tsaveler tells a story of the discovery
of lead, copper, and silver mines in that State,
near tIme town of Warren. TIme lead vein is
said to be 800 feet long and 7 feet wide.
Copper and silver are said to exist in con-
siderable quantities.

	Letters from Bagdad announce an extraor-
dimmary fall of rain on the 14th of June at that
place, which, from its reddish hume, gave the
surrounding country the appearance of a
battle-field.

	We are indebted to lion. C. B. Hoard
M. C., Watertown, N. Y., for three volumes
of the Annual Report of the Commissioner of
Patents for 1856.
26</PB>
<PB REF="IMG00031" SEQ="0031" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="27">~tientif~c ~n~erican+

[Reported sfflcsally for the Sciea5ific American.]

	APPARATUS FOft GRAIN AND GRASS hA YFSTE~5J.
W. Baltzly and Wns. IlobSon, of Pans, Ill. We claim
the reciprocating teeth. C, constructed as shown at Fig.
3, in combination with the stationary cutting plates, c,
in lie lingers, B, for the purpose set forth.

	[The novelty of this device consists in the peculiar
construction of the cutting arrangement, whereby the
grass or grain, as the sickle vibrates, jo prevented from
being thrown outward from the fingers by the action of
the cutters.]
	GAS BURNRR5~VnI. W. Batehelder, of Now York
City I elaina the improveul method of burning gas de-
scribed, viz. cosnhulning two apertures of different
areas, ~o arranged tliiit a flat stratum of gas issuing in
this first instance from the lesser aperture shall im-
lingo and press niuon Cue second and larger aperture
placed in the caine lilane with the issuing jet, and in
serli usanner as to pass it without causing any deviation
tluereot~

	MACnINa FOR BINDING GRAINJos. F. Black, of Lan-
caster, Ill. I claim the combination of the arms, I I,
J J, and hooks or clamps, is v, constructed and ar-
raliged to operate conjointly as and for this purpose set
beth.

	[We have no doubt this will form a useful adjunct to
reaping maclimes, as it sheaves anul binds the griiin as
fast as cut, aiid requires bat one uittendant.]

	llousse PoseeesG. E. ihuirt, Abram Wright and G.
F. Wright, of harvard, Mass. We claim the method
by which we arc enabled to esnerringly give such a
shape to this ends of the tracko of said machine that
elcoehy fitted platform cliaiiis may be operated upon
hhiem without producing any variation of tension or ir-
reguduirity in the movement of said chains, substantially
as act feiihi.

	Lure IhOA-rsM. 31. Camp, of New Haven, Coun. I
claim flu t Dividing the hold of a life-boat into see-
lions by his. bulk lueuuuh, C, and hluiving an aperture, I, in
this. built hue ud to be covered and closed by this swing
hatch II in the manner and for the puirpose specified.
Second Making this section, II, of this hatch to operate
is a cover oi v ulve to chose the aperture, I, in this bulk
head (~ so sud for flue purposes set forth.
	C huird flue colusbinatien of this movuible combings
with this hatch 11, and the aperture. I, in the bulk head,
C as desemibed and for this ptirposes set forth.

	Br tRi~sea FOR MILL STONE DRivERSEdwin Clark,
of Lauucaster Pa. I chaini this rocheing bearing, consist-
ing of a cyhindilcal portion d inserted within a cavity
iii Vie huesiun block, b, and awingeul portion, N passing
thiisuighs a olot in said bearhn0 block, in combination
asithi the b~aming recess, m, in the driver, as set berths.

	METAllIC PAcuemNo thINGS roic STEAM ENGINESP.
Clark, of hhahuway, N. J.: I claim constructing packing
rings of a number or series of layers or lamina of sheet
metal in the maImer described, for the purpose of se-
carig Shat flexibiuhey neersoe- ~- ~ writs bend
around a red a nastaihic rimig having a sui in cien u quan-
tity of material in it to ensure the requisite durability.

	BuamoLAus s Au.AzamsSimeon Coon, of Ithaca, N. Y.
I claim combining thus cpring. N, and hammer, N, in
omus piece, aiid acting on a stirrup as above described
and construicted.

	EDGE PlANE FOE TRIMMING BOOT ARD Snoic SOLES
I. A. Dunham, of North Briulgewater, Mass. I claim
this new sale or welt trimmer, constructed substantiahl~r
as described, thiust is, with a cuitting blade and guar
thuat together firms a circle or very nearly, and with the
cutter as arranged as to be set sip to its guard, as fast as
it beconues seorui, by simply turning blue said cutter on
its center as susecified.

	REAPING AND MOwiNG MACnlNCsJ. G. Dunhaun, of
hiusritan, N. J. I am aware that this use of a sliding
usrun, or equuivaheuut meamis, bas been employed bor
changing the elevation of the sickle, and therefore I do
not chains gemmerally this application of a slotted frame
suid shidiusg arm for such puirpose.
	Bust I cluuimn, in combinatiosm with the rear part of the
rectangusluir framne, 0, this slupporting castor wheels,
K M, withi this inclined shiuhing trains, and arms, J and
I, adjustahihe brace, N, and inclined bar, L, turnishied
with a series of susekets, I, I, I, this whole arran5ed sub-
stantially as and for this purposes set forth.

	PORTFOLiO OR Musuc STANDsAugustus Ehiaers, of
Boston, Shacs. I clusina arranging the braces or sliding
frames whichi are hinged to and support thus adjustable
heaves of a portfolio stand in such a way that they shall
hum sliding always keep in nearly a vertical position for
this better ssspportmng thus leaves and this weight supon
them, by having the traversing and bolting rods move
in curved grooves directly beneath them in the sides of
this stand, instead of having this bolting rods ef each
brace or brains slide in grooves on the othser or opposite
side of Chic center of caid stuind, in combinatioma witha this
locking devices above described, for this purpose of
rigiully locking and suspporting thus leaves, and avhmereby
this whole stuind can be lifted by this heaves in removing
it broni place to phuice.

	I-IARVESTER5A. B. J. Flowers, of Greenfield, Ind.
I claim guiding thss sesachuine by means of the castor
wheels, K K, upright shaft, h, ansI thus horizontal sluaft,
31, in conubinuition with the peculiarly cousotruicted cas-
tor plates, L, U, smuid parts being arranged to operate in
relation Cu each other, in Clue nuanner set forths.

	[This invention adds an endless apron to an adjusta-
ble frame carrying the sickle, and a new discharging
device, so that this grain may be cut at varying lui0hsts
as desired. This grain may be discharged in sheaves or
not.]

	STream IICATINsC AtwAmuxTusEdnisund Gibhuc, ef
Madisoum, Who. d clahuum this boiler, N, with its trosughi,
F, olierating iii esuisbimimitisin asiths this cull oh pi~e, 0,
usmud its promigs, P ummul Q, or their equivalents, arruinged
for this purpose specified.

	APPARATUs FOE LoAasieeG Loes ON WAGONsPhuihan-
der Gilbert, of Ahsxausdria, 0. I do not clahusi .1 i si
thus parts separately censishersul; buut I chuulmn this
liar construiction ansi arrangemeuut of this psi I utile
femume herein deceribed when ceusubined with a windi im
uuuud its appurtenances capable of hieing shifted to eithmei
chic suf a wagon, in thus nuanner and for this psurpose siss.
cified.

	Los.ussj. I~. Ihall, of Cincinnati, 0. I chusim fist
~f hIri construction and arrangement of tuilsibler
13, &#38; c., in thus uheceribed connection with the his
		back piuste, K, thse whole serving as a screen or essit. in
		betwoen Cisc licuhe usush this more interior harts.
		  Second, Flue described constrsuction and arrangement
		of bit, C, c, lever, I), d d, and tusmuiblers, B B ii ,
		whereby hIss bolt so lucId securely to its locked huosition,
~	~ ~	until this acithidruiwal suf the key.
		 Third, Thus dessuilied ~srrangenisnt and combination
	~/	of the bit, C, c, dog, I, munul iruss ii, Is, for thse purpose of
P.		tighisning thus airings in thi~ Iglanner set torCh.



SI
	MAumeuu WiimTE LEAam.Ilenry Ilannen, of Dubuque,
Iowa: I claim subjectin5 the lead and compounds
formesed therefrom by the agents employed for thsis pur-
pose to this action of steam and air, vapor of acetic acid,
and carbonic acid gas, alternately and successively un-
til this process is complete, in the manner substantially
uS and for this purposes set forth.

	SAFETY CLASP FOR BRACELETS, &#38; c.Isaac Hermaun,
of New York City: I claim Clue application of the two
inclined plane surfaces, F and G, Figs. 2 and 3, and the
plate, B, attachhed to the rod, L, for thse purpose set
borthu, to cecuirs more catchy clasps on bracelets, and for
other purposes.
	And I also claim the combination of the steadying
plate, B, with time parts above muentioned, which plate
peca-ento flue catches, N N, Fig. h, from turning aside,
Clue whole is in combimaationthaat is, plate B, Fig. h, in-
clined phanec, F G, on rod L, Fi5s. 2 and 3, as set forth.

	STIRRUPS FOR RiDING SADDLEsJames Neil, of York-
vihle, N. Y. : 1 claim this exhencion piece, or lever, D D
F F, arranged and spilled to the stirrup so that when
thus rider falla, lsis toot tif it remain in the stirrup) shah
operate this caid extension piece or lever, B F, so as to
free oume end of this bar, A, and thus release this stirrup
from this stirrup strap, substantially in the manner set
forth.

	SmExviu FASTENERDavid C. Peacock, of Brooklyn,
N. Y. : I claiuum hiss conotructious of a sleeve button se-
cuursd by a buir affixeul thereto at one end by a joint or
hinge, liaising through holes in the sleeve, and being
seceuresh or fasteumed at this end opposite to the affixed
end, in thus manner set forth anfi Gescribed.

	JOURNALS OF AXLES WITH FRICTION NOLLnuSGeo.
A. Prentloo, of Cambridge, Mass. : I claim securing
journals appiied to Clue solid axle and friction rollers.

	hIAND STAMPT. J. W. Robertson, of New York
City : I do not claim, broadly, thus employment oh cc-
aolving Cyrus arheels for making impressions, for I am
aware thuust such aslmeels huave long been known and
ussed. They are seen, her example, in nearly all book-
paging machines. Bust Co this beat of meuy knoaviedge and
behieb, no hand stamp hike mine has ever belore been
known or mused.
	I claim this construction of hand stamps in the man-
ner described and represented.

	[Letter and other stamping is near an important mat-
ter, and the invention is a hand stamp for this purpoos,
being especially applicable where the letters or num-
bers have to be repeatedly changed.]

	FILiNG AND SETTING SAwsAnshey C. Smith and
Joosphs K. Creighuton, of Each Birmingham, Pa. : We
arc aware that several saw-filing and setting machines
Isave been devised, and that files have been placed in
recihurocating frauses. We therefore do not claim,
broadly. the employment or use of reciprocating files,
Crreapective of Clue arvangement shown.
	Neither do we claim the setting device, irrespective of
its construsetion, and also of its arrangement with the
filing device.
	We daises this combination of the filing, setting, and
feeding device, ashen the whole is arranged to operate
conjointly and automatically, as shown, fur the purpose
met forth.

	[Thts is a general improvement in saw-sharpening
and filing. It consiats in files set in reciprocating
blocks, which are moved by hand or other poaver; also
an arrangement of hammers to give the set to the saw,
and a peculiar feeding device.]

	ONNECTuNG AND DISCONNECTING EIIR BLOORS OF
Ir.oeu OR OTHE PAVE~EeuTsBarzillai C. Smtth, of
Burlington, N. J. : I do not claim securing piates to-
gether by means of dowels and channels, or strips or
bars and grooves to receive them.
	But I claim the mode set forth of hocking the plates or
blocks of iron pavements, the same consisting of the
hocking bar, e, and ooves, d d, one of which is of suf-
ficient de uth Co cover the entire width of the bar, ~,
aviuihe lime ohumer is of Sushi COal sepsis, sue mu counoinaluan
therewith I claim the grooves, s amid un, in the manner
and for the purposes set forth.

	TIAmLusOAD CAM SEATSJ. H. Swan, of New York
City: I claim the combination of the reversible back
aisfi seat by means of this lever, a, substantially in hue
manner and for the purposes set forth.
	I also claim the combination of the levers, a5, the
arms, ts, and segments, a, with their attachment for
reversing this back, as specified.

	TRUSSED BRuDOEAbram S. Swartz, of Buffalo, N. Y.:
I chains thus arrangement of the parts described, so that
the tower, A, the tension bars, B, and this suspension
rod, C, when taken togethuer, will present the distinctive
feature of a triangle with the foot of this arch, B, rest-
ing sipon the tower within the triangle, Substantially as
set forth.

	CARRIAGE PamorChaunesy Thomas, of West New-
burg, Mass. : I chaises an improved carriage prop, as
conshructed with a screw shoulder cap, B, combined
with a joint bar standard, A, and arranged between the
heather, L, and thIs joint bars, G h-I, and so as to screw
umpon the said standard, substantially in manner as de-
scribed.

	NOTARY STEAM EeueuuemusD. C. Turner, of Aztalan,
Wis. : I do not chaina mausking the engine avith two set.
of piutons working in separate steana channels.
	But I claimsi the valve, K, in its recessed seat, and the
protuberant rim, f f, as arranged with the steam chan-
nels, floating abutments, and hinged pistons, as fully
specified.

	[A principal feature in this engine is the floating
abuutment, which, althou0h answering all the require-
ments of a fixed one, will, adjust itself to the changes
caused by the wearing of the fans, or other parts.]

	RAKES FOR HARTEsTiRSIssac Van Doren, of Somer-
ville, N. J. : I claim operating the rake, A, when ar-
ranged in relation to CIsc lulatform as described, by
means of this double-geared sector, G, in combination
with the rod. B, and rock shaft, N, or their equivalent,
the ashole arranged and operating substantially in the
manner set forth.

	CARDING NecoumeamsWun. H. Walton, of Brooklyn,
N. V., and G. H. Phinney, of New York City; We
chaimn thus application mund use of a rotary brush for
stripping the main cylinder in combination with the
lever, N, or its equivalent, by ashich the main cylinder
is aCrihuped and cleaned when rmsnning at the speed given
by ahifling this drivin5 belt from tIme driving pulley to
thus loose pulley mis fully described and shouvn in the
siuscification for the purposes set forth.

	NUT MAChINES. Ih. Wiuitaker, of Cincinnati, 0. : I
cheuhusi Chic use of this prepseatery punch, b, and die, N, in
the tescribed combination avith the shearin0 and finish-
inc die L, lunch or mandrel J, and counter die K, where-
by us numt of definite thickness is formed by first partially
huuunching thus blank while joined to the bar, and confined
on every other side, then separating the blank and cons-
pheting this ~uunehing and shaping, the whole being con-
structed and operating substantially in the manner set
forth.

	VALVE GEAR FOR OsCILLATING STEAM Es uNasN.
XV. Wheeler, of New York City: I am aware that the
	eccentric throw and piston head and that oscil-
lating throuv and eccentric or  cam lead have
been uuaed before. These I do not claim.
	Buut I clsuimn actuating tIss valves of oscillating steam
engines, by the combined movensents of the cylinder
and piston rod, sub~tanCialhy as described.

	FLY TRAPS. N. IVilmot, of Watertown, Csnn.
I claim a fly Crap constructed substantially as set forth,
and concisting of a Feeepfache which is constructcd and
olueraled in suds m unsur that au-hen, it is savept over a
table or other object, the ~esoutls is open to receive flies,
and wimen the sweeping movemement is finished, the
mouth is closed to prepefiti their escape.
	Dmvuuusa APPARATIISG50. Williamson, of Brooklyn,
N. Y. : I do not wish to be understood as limiting my
claim of invention to the special construction specified.
as my invention of improvements may be applied by the
substitution of equivalent means.
	I claim the employment, in combination with the
nautilus, of the channel ways for the escape at the sides-
of this comespressed air from the workin~ chuamber sub
stantiahly as described, the said chian~eh ways being
made in the thickness at time bottom of the nautilus 
that is, betaveen the floor of the working chamber, and
the outer bottom surface of this nautilus, as set forth and
for the purpose specified.
	I also claim combining the nautihums with, and susy
pending it to, a float or buoy in the manner substantiahl -
as described, so that the apparatus be operating this con-
necting rope or equivalent may be worked from this me
side of thus nautilus as described, and for the purpos
specified.
	And I also claim combining a sprin. balance or scale
with the combined nautilus and fiomut, inbatantially as
specified and for the purpose set forth.

	FmRE ESCAPE LAuuDsauhlenry Lowenberg, of New
York City : I am savare that ladders avith homig sacks to
convey the occupants of a building to thas ladder hay e
been long in cousmon use, but the application of baokets
or their equivalent, operated as above set forth, and the
manner of elevating and packing this ladders I believe to
be new and usefuk
	I do not claim the extension ladders, neither do I
chaimes the use of ropes passing around or over aviudlasses
bee this purpose of drawing or extending the ladders
after they have been elevated to this desired angle
ready foe extending.
	But I claim this manner of regumlating or adjusting the
truck~, f, C, Figs. 2 and 3, by means of the hinged guide
pole, k, Fig. 2, or guide bars, Fig. I, arranged and
operating in the nsanner and for tIme purpose of omupport-
in5 the ladders svhen secured by the rope, I I, at any
desired angle, substantially as described.

	COOLicxW. F. Messenger and Henry Rehabu, of
Ness York City: We claim the refrigerating saddle, A,
substantially as est forth.

	[These coolers are adapted for casks, and more espe-
cially those containing liquids on draught, or those that
are drawn through a tap. and are made to fit on the
upper half of this cask or barreL]

	MACHINE FOR DusTuisuTmeec TvuEWm. II. Mitchel,
of Brooklyn, N. V. : I chains, first, The inclined check
block, 1, in combination with notches ima the sides in the
types, so placed that notch of this first ty~us conies in
contact with the said inclined check black ashen this
type is projedled its thickness beyond the end of this
slide dontaining the line of types1 so that only one type
at a time is separated from the line of types, as speci-
fied.
	Second, I claim thus use of studs or pins uniformly
placed to take notches variously placed in the hypes,
thereby sustaining the types in various positions to be
dropped or distributed, ashen said types reach recep-
tacles adapted to the peculiar positions of said types.
	Third, I claim this method described of distributing
types by the revolving wheel, 1, withits grooves and pins
X, when combined avith the stationary inclines or offsets,
substantially as specified.
	Fourth, I claim distrihutnig types from uniformly
placed and moving pins, or their equivalents, by the use
of a second notch in the type, combined avitti suitable
offsets or inclines to disengage this first not h of this
type, and then allow the type to be suspended by the
second notch for distribution, substantially in the man-
ner specified. thereby providing for distributing greater
varieties of types, without requiring extreme acenracy
in the position of the notches as specified.
	Fifth. I claim the oscillating ring, y, and connecting
rods, Z, in combination with the pushers, 32, for this pur-
pose and as specified.

	PENCIL SHARPRNERSJ. XV. Strange and Sansuel
Darling, of Bangor, Me. : We do not claim the mere
multiplication of cutters of various sizes in time same
	he55~.-, D..L era. x Swuf base sonttro-s, con-
structed and arranged to refines the assod and the
head separately, substantially as set forth.

	WRENCnH. D. Blake, of New Hartford, Coun., as-
seignor to W. H. Warner, of Neas Britain, Conn. : I
claim the combination avith a vibrating stock or hanuils,
arranged for action, substantially in the manner de-
scribed of the two or inner and outer sliding jauss of this
wrench, jointed on opposite sides to said stock or Imandle,
and both jaws operated or expanded and contracted iii
reverse directions, to effect and release gripe by Clue
lateral throw or motion proper of said handle, in both
directions of its swing essentially as set forth.
	Also, while not claiming a projecting thumb-piece to
a single sliding jaw to lock or release the gripe of this
same by means of a cam or its equivalent connecteul
therewith, I do claim providing the one avjth a project-
ing thumb piece, f, arranged to overlap tIme jointed at-
tachment of said jaw to the stock and foensing a risid
extension as it were of said jaw to facilitate time action
er movsment of both jaws, substantially as shoasn.

	HARvEsrussasSamuel Pennock, (assignor to himself
and Morton Pennock,) of Kennetts Square, Pa.: I chains
adjusting and re5ulating the position of the crank shaft,
N, by means of mechanism constructed, arranged and
sperating in the manner set forth.

	[This invention consists in placing the crank shaft
within a frame, which is pivoted to the main frame, and
sperated by an eccentric, so that the shaft guiding the
frame may be easily throavn in and out of gear.]

	LATHE FOR TIlE MANUFACTURE OF CLOTHES Puss,
&#38; C.John Humphrey, of Keene, N. H., (assi, nor
to himself and Amos N. Perry, of Harehiville, N. II.)
I claim the method of feeding the pieces Co he
turned to the spindles, when their relative positions are
changed as shown, and in combination avith hIss mubove,
removing the finished pieces from the spindles, this whole
being arranged and operated in the mannsr and for time
purposes set forth.

RE-IssuEs.

	CAsT lanes CAR WuEmeLsAnson Atwood, of Troy
N. V. Patented May 15, 1547. I claim connecting the
rim of a wheel cast in one piece with a solid hub, by
means of a single waved plate, in combination with the
dished flange or flanges of the hub, forming a ring con-
centric with the rim of the wheel, substantially as de-
scribed. ashereby Chic s versi parts can yield to the un-
equal c6ntraction in all directions avithout sarious strain
of Ilme metaL

	CAST IRON CAR WnExa~sA. Atwood, of Troy, N. V.
Patented May 15, 1547 : I chains a cast iron disk, corru-
gated in the nuanner substantially as and for the purpoos
described, when used in connection with the chilled rim
of a cast iron aaheek

	SEED PLANT sSolomon T. holly, of Nockford, Dl.
Patented June 10, 1817: I claim first, In combination
asith a machine that drops its seed automatically, a hand
lever and clutching apparatus, that enables the operator
to quicken or retard dropping, so as to bring it to the
exact spot, substantially as described, and avithosut dis-
arranging or injuriously affecting the automatic move-
msnt.
	I also claim, in combination with the wheel, s, having
its center of motion at e, and Curnished with openings, i,
the lever, ns, with its plate, p, and hung or pivoted at a
point eccentric to the point. 5, so that the plate, p can
cover or be drawn within therange of the openings, q, at
slated intervals, substantially as set forth.
	1 also chains the employment or use of tlse indicator,
b, connected with the valve U, and arranged and opera.
ted as she , and for the purpose set forth.

	REMOv5NG PuoTooamArus FROM GLASS TO PAPER
Edward Howell, of Aubtabula, Ohio. Patented May 15,
1557: I chains the described use of beeswax, orits equiva-
lenin, laid upon the surface of tho glass plate previous to
applying the collodhon film, chemicals, and colors, as
described, far the purpose of fashlitating the removal of
the picture, together with the manner of causing the
backing paper to adhere to lbs finished picture, thums
giving it strengths to overcome the adhesion of the wax,
or its equivalent, to the plate of glass, in the manner
specified.
DESIsE.

	GAS DUE- R SnADESGeorge B. Foster, of Boston
Mass.

Activity at time Patent 0111cc.

	Within two aveeks past, Clue Examniners at
tiae Patent Office, under tlaesnpervision of tIme
new Cousmissioner, have evinced a marked
degree of alacrity; and at tias rate they are
nosy progressing, the back avork of the Office
will soon be biouglst up. Tue Chief Exami-
ner of tue Agricultural Class has recovered
from his illness, and is back at isis post a~ in;
and ave are assured that Chose who have had
cases long peuading in this department avill
speedily obtain decisions.
	There is not the usual number of applica-
tionS made, at present, Gaving, probably, to
the do sness of hiss misoney usarket ; but we
can assure inventors that there muever avas a
better time to apply for patents, and to get
jesatics domie uma tise exansination at the Pateuit
Office, than time present.
	Advice concernin0 the patentability of us-
ventions is freely given, avithout charge, at
this office. Specifications, drawings, &#38; c.,are
also prepared on the most reasonable teriass
at the Scientific American Patent Agency,
No. 128 Fulton street, New York, or at our
branch establishment, opposite the Patent
Office, Washington.
	All communications should be addeesied to
~i Munmi &#38; Co., New York. See advertise-
ment on another page.

Crystal Palace Visitors.

	We are pleased to be able to state that a
greater number of visitors than at any prsvi-
Gus fair have entored the huildimic this season.
Every evening the avhoie of that vast space is
thronged; and we have it from good authority
that on Friday the 25th nit., iso less than
$1000 was received at the doors, and alloaving
about 1000 free admissions for exhibitors, etc.,
tisere would be an attendance of 5000 persons.
This is a good beginning; ave hope it may be
kept up throughout the season.

Time Cotton Crop.

	The cotton crop of the United States for
the present year, is estimated at 3,000,000
bales. Allowing 600,000 bales for domestic
consumption, and there avill remain 2,400,-
000 bales for export. The present prices avar-
rant an average of sixty dollars per hale,
avhich would give an aggregate value of ex-
ports, from this source milone, of nearly one
hundrsd and fifty millions of dollars.

Fr~derick Sauvage.
	Frederick Sauvage, whom the French claim
as the first person to conceive the idea of ap-
plying the screav as an auxiiiary of steam,
died a feav aveeks ago in Haves, France. His
fortune and health had been ruined by his la-
bors in seientific discoveries, and his reason
had left him in ecuisequence of his chagrin of
different kinds.

	On the 11th of September last, the first lo-
comotive ever run in the Stats of Arkansas
traveled over the track of the Memphis and
Little Rock Railroad, for a distance of three
milesas far as the road is completed from
Memphis.

	A good antidote for poisons, and one which
it is useful to knoav, is, avhen poison has been
swalloaved accidentally, take tavo teaspoonfuls
of ground niustard mixed in warias water. It
will operate as an instantaneous emetic.

	The ant is said by naturalists to produce
86,400 eggs each day, avhich continuing for a
lunar month, gives the astoisishin~ sum of
2,419,200. This being about one egg in two
seconds, very little time is consumed in cack-
ling.

	The use of steel axles and tires is common
on the German railroads. We understand
that they are also being introduced into this
country, in a limited measure.
(	5
,7~	)
(~ 5\)
Issemed fsosss rise United States Patent Office
FOil TILE 55EEiI ENISiRO SEPTEMBER 22, 1817.;</PB>
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~cicwtific ~mcvican+
~1c{n ~jnbcnitiQn~+
Jennings~ Improved Carriage Tops.
	The inconvenience of having a top or cover
rigidly fixed to a vehicle is often felt, and a
top which will take off and put on is so cnm-
bersonse and unseemly that they are seldom
adopted. Mr. Jennings has endeavored, in
the invention isere illustrated, to render a top
light, portable, and easily adjnstable, and its
construction will be seen by reference to the
following engravings.
	Fig. 1 is a front view of the whole, Fig. 2
a transverse section, and Fig. 3 a plan of the
]iYg.J
arrangement. The same letters refer to simi-
lar parts in each.
	A is the seat or body of the vehicle, having
a slot at each side, in which the bows of the
cover fit, and C are screws, which hold them

1 j 2

lust when fixed. B C D are the frames or
boa s ehich are made of the usual material
and shape they no howex er divided in the
centes and ire capable of being folded by
meins of the hsn~es B C D. The bows
arc connected together and held apart by the

I
7
I

pieces, E E, which are fastened by the hook,
L, passed through the staple, F. F F are
other staples, to which E P are fastened when
the whole is folded. S S are the hinges for E
E, and II is the cover cloth.
	The folding operation is very simple. The
cover cloths is loosened, and the catch or hook
taken out of the staple, and the whole then
doubled up by means of the binges in the
hews. It is an inexpensive and useful inven-
tion, and was patented March 31, 1857.
	For further particulars asid information
apply to R. S. Jennings, ~Vaterbury, Cona.

Improved (Is.ain Cleaner.
	J. R. Gates, of Eckmansville, Ohio, is the
inventor and patentee of the machine here
H
to some extent, in use. The grain is beaten other extremity ; and by the aid of the latter
by alternate contact with beaters, on a rapidly the coarse dirt, and all the false grains, cheat,
revolving horizontal shaft, and a lining of etc., are moved.
burr stone within the lower half of the in- Fig. 1 is a perspective view, Fig. 2 a longi
closing case. A powerful blast of air is drawn tudinal section, and Fig. 3 a transverse see
through, to remove the dust and smut, by the tion.
aid of a fan at one extremity of the case, and A represents the exterior of the cylindrical
a circulation of air passing through the feed case which forms the cleaning device, B is a
box is introduced by an additional fan at the horizontal shaft, and C represent beaters dis-
GATES GRAIN CLEANER.
	-	~.1
~L:u~.	J
posed thereon, and extending radially to the
surfaces of the burr-stones, D, which line the
lower portion. E represents an inside case,
only employed on the upper half, and which
is perforated, to allow a draft of air to rise
upwards among the agitated grain. F repre-
sents a fan fixed in a suitable box, F, at one
extremity of the cleaner, and G a similar fan
in a similar case, G, at the other extremity.
Both fans are fixed on the shaft, B, of the
i~2
	K is an inclined screen of wire, which ex-
tends across the passage, H. This is the pas-
sage into which the grain is fed from the hop-
per, and the screen, K, receives the falling
grain, inclines them inward, and throws them
through a suitable aperture into the cleaning
device, A B C. The fan, F, draws a strong
current of air upwards through the screen, K,
which c:~rries all the loose dirt and light
grains up the portion H, over the upper edge
of the separating partition, and down the por-
tion H. About the middle of II, the air
turns sidewise, and enters the fan box, F,
while the heavier cheat descends by its mo-
mentum, and lodges in the lower portion of
H, from whence it may be removed at inter-
vals by opening the door, L, which is held by
represented for cleaning grain. It was pat- a spring. M represents a netted opening in
ented on the 19th of May last, and is already, the lower portion of the case, A, at one end,
mill, and both discharge a powerful blast of
air through their respective apertures, F and
G. H is a box intervening between the fan,
F, and the body of the mill, and which is, by
a suitable partition, divided vertically nearly
to the top, thus connecting two vertical pas-
sages, H and H, connected at the top. I is
a hopper, into which the grain is fed, and J a
slide, by which the rate of feed may be con-
trolled.
through which a liberal supply of air rushes,
to cleanse the grains, and which finally rises,
as indicated by the arrows, carrying the dust
removed by the agitation through the open-
ings in E, into the fan, G, and is discharged
through G. S S (Figs. 2 and 3,) represents
the lines of section on which Fig. 2 is taken.
	For further information Mr. Gates may be
addressed as above. See advertisement on
another page.

Good News for Inventors.
	The various employds of the Patent Office
are now at their posts, after their summer
vacation, and the Department hums with in-
dustry. We are assured that all patent cases
will now receive prompt attention. This is
good news for inventors. Send on your mo-
dels, all ye who want patents!
Inventors, to the Rescne

	The late terrible disaster to the steamer
Genteel America should be regarded by inven-
tors as a special call upon them by sufiering
humanity. Five hundred strong men, with
death staring in the face, were unable to con-
struct anything that was capable of properly
floating them; and at the end of two days they
were miserably launched into eternity.
	The steamer had five life beats of the best
knqwn constructionfour were of weed, and
one of metal. The latter, in tlse effort at
lowering, was thrown by a sea against the
vessels side, and stove. It sank, a useless
shell. One of the wooden boats was also
stove and sunk.
	It would seem that the Genteel America had
plenty of pumps, but they became choked up,
or, in some unaccountable manner, were bro-
ken. The cylinder or barrel of one of them is
reported to have bursted.
	The life-preservers were of tin, and it is
said that the least dent rendered them entirely
useless.
	We appeal to American inventors, and ak
them forthwith to apply their minds to the in-
vention of new devices for the saving of life
when endangered by such catastrophes as that
which had just engulfed the Central America.
Cannot pmnups be invented that will never
choke? Cannot life-boats be made that will
not sink? Cannot life-preservers he pro-
duced that will be available in case of neces-
sity? Can no new article be invented, com-
pact when not in use, but strong, efficient, and
ready when disaster comes? Can every other
conceivable thing be done by inventors except
flotation upon the waters surface?
x







V1jj
Contemplated introducrioss of Seed from
Northeris China.

	Mr. Robert Fortune, who has been em-
ployed for several years by the East India
Company and the London Horticultural
Society, to collect seeds and plants in vari-
ous parts of China, has offered his services to
the Patent Office, to vialt the northern prov-
Incas 03 tnat country, to procure the seeds of
the best varieties of the tea-plant, as well as
others, with a view of cultivating them in the
United States. The Commissioner of Pat-
ents has responded, inquiring the amount of
compensation he may ask, and solicits a pa-
per on thin subject from him for the next Ag-
ricultural ReportExchange,
	[We hope that this is true, and that Mr.
Fortunes services will be accepted, as he is a
gentleman of high botanical acquirements,
and will do honor to any nation wIse employs
him. He is well acquainted with China, and
has written several descriptions of his adven-
tures and travels in that country.
e
Fifteen Hundred Dollars isa Cash Prizes.
	The proprietors of the ScIENTIFIc AMERI-
cAN, desirous of increasing their circulation,
and doing away with the system of employing
traveling agents to solicit subscriptions, offer
the following splendid prizes for FIFTEEN of
the largest lists of mail subscribers received at
this office before the 1st of January, 1858
	For tse largest List				$305
	Fer the 2d largest List -	 -	.	-	250
	Fer the Id largest List	- -	-	-	255
	For the 4th largest List	- -			150
	Fer the 5th largest List	- -	-	-	10(5
	For the 13th largest List	 -	-	-	-
	For the 7th largest List	- -	-	-	55
	For the 8th largest List	 -	-	-	- SQ
	For the 9th largest List	- .	-	.	130
	For the 10th largest List	 -	-	-	- 55
	For the 11th largest List	. -	-	-	40
	For the 12th largest List	 .	-	-	- 15
	For the 13th largest List	- -	-	.	35
	For the 14th largest List	 -	-	-	- 23
For the 15th largest List

	Names of subscribers can be sent in at
different times and from different Po~t Offices.
The oasIs will be paid to the orders of the suc-
cessful competitors inamediately after tlse 1st
of January, 1858. Circulars giving further
particulars may be had gratis by sending to
the publication office, 128 Fulton street.
	We hope our friends tlsroughont the coun-
try will avail themselves of the above liberal e
offer, and whsile they oblige us, they will be
benefited to a far greater extent themselves.
~	See Prospectus on the last page.   1~
28</PB>
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NEW YORK, OCTOBER 3,1857.


Failure of She Atlasitic Telegraph.Its Cause
aud Prospects.
	Tbis, the greatest enterprise of the age, has
for the present been baffled, if not defeated,
and it becomes us to inquire critically into
the canses which led to such an unfortunate
result. No other public event within our
recollection excited more general attention
the people of two continents were personally
and nationally interested in the issue; and
with the most extensive measures there were
combined tbe most ample means to insure
success. The Atlantic Telegraph Company
entertained the lofty design of enablin0 the
Old and New Worlds to hold converse to-
0ether through the waters of the ocean and
the hearts of the people responded to their
call for aid to carry out this grand idea.
Wealth poured into their coffers in a stream,
and they were enal)led to call to their assist
mice the highest scientific and mechanical
skill to complete the undertaking. And not
only was the sympathy, but also the power, of
the two greatest maritime nations on this
globe enlisted in their service, and the noblest
ships of those nations navies were placed at
their disposal. It was reported, through the
agents of the Company, that the most minute
and perfect preparations had heen made to
secure success, and that experiments made
under tlseir direction put doubt almost out of
the question.
	The fleet which was to lay the submarine
telegraph cable left Ireland on its grand mis-
sion amid prayers and cheers for its safety
and success; hut alas for the miserable ar-
rangement s of those who had charge of the
undertaking, the ships had only sailed about
four miles when the cable became entangled
with the machinery, and was cu~ en twain.
Luckily, however, the depth of water was hut
moderate; the broken cable was fished up
and mended, and away the expedition again
steamed, at the rate of five miles per hour,
for three days. Here, when about three hun-
dred miles out, and in very deep water, the
Chief Engineer, Mr. Bright, cast his eye, like
a philosopher of old Gotham, along the cable,
and fancying that it was running out much
faster than the vessel was going a-head, he
ordered the mechanic in charge of the brake
to apply one hundred pounds extra pressure,
and check the cables speed. This, it is said,
was done under a remonstrance, but neverthe-
less it was done ; the ship gave a lurch, the
cable parted like a pack-thread behind the
fri0 ate, and in one minute, by this simple ac-
tion, the objects of this magnificent enterprize
were frustrated. We can imagine the deep
mortification which every one on hoard the
combined fleet must have felt, when the fact
of the disaster became known, and that the
broken cable was lying two miles deep on the
bottom of the ocean, without the possibility
of being rescued.
	When we take into consideration the vast
resources hrou0ht into requisition, and the
gigantic efforts made to conduct the under-
taking, and how all these were rendered
abortive by the addition of only one hundred
pounds extra pressure to that of three thousand
pounds already on the payin0-out machinery
of the cable; it is enough to throw ridicule on
the whole affair. That extra hundred pounds
pressure was the straw placed on the over-
loaded camel which broke its backthe
mouse-hite which put the lion hors de combat.
Instead of complete provision having been
made to meet every real or supposed contin-
gency, efficient means were not provided for
the very first and most essential arrangements
to insure success, namely, positive mechanism
to prevent undue strain upon the cable under
all known conditions. Without such provision,
it is palpable that the laying of the cable by
this expedition more resembled a lottery than
an important scientific, engineering, and nau-
tical operation.
	Several contingencies in the laying of the
cable might have arisen to defeat the enter-
prize, but could have been provided for. One
was the paying-out of the cable at a less
speed than that of the vessel, whereby it
would become too taUt, and be broken by the
propelling power of the steamer; a seeond was
too great restraining pressure applied to the
paying-out machinery, when the cable was
descending at a high velocity into very deep
water; a third was, the running out of the
cable at a greater speed than that of the ves-
sel, whereby it would all be run out before
land was reached. It was left to the skill of
those intrusted with the undertaking to meet
these exigencies, should they arise; and one
of them having arisen, according to a dark
conjecture of Mr. Bright, he provided for it in
such an effectual manner as to cause the
union fleet of America end Englandafter
all the fcastin0s, ceremonies, and speeches
made before settin0 outto return to Old
England after running off only 300 miles of
cable, with their colors drooping from every
mast.
	It would have removed the sting of blame
from those who had charge of the undertaking,
if they had candidly confessed to gross misman-
a0 em eat or defective arrangements; but the
first reports which they circulated were cal-
culated to smooth over the great failure, and
to hide their faults. It was stated that the
laying of the cable was not defeated, but sim-
ply delayed: and that it was perfectly demon-
strated (against the opinion of those who
doubted) that messages could be transmitted
through the entire length of the cable, when
laid, because communication had been kept
up between the vessel and the shore until the
cable was broken. But nothing was added to
our store of knowledge on submarine tele-
graphing by the messages sent three hundred
miles through the broken conductor, as the
one laid in the Black Sea during the Crimean
war was sicarly ~S long. Lxpurimuu~, It was
stated, had also previously been made with a
section of the cable, by which it had been dis-
covered that it was to be converted into an
elongated Leyden jar, the power of which
was proportioned to its length, and that its
mechanical powers to record messages, in-
creased with its length. The letter of Pro-
fessor Morse, quoted by us two weeks ago,
lets us into a secret on this point, which is
worthy of much reflection. He stated that,
instead of the current becoming more power-
ful, and the action slower, as would be the
case were the cable to be converted into a
Leyden jar, the current became feebler and
feebler as the cable was being paid out; but
he added, he did not consider this a serious
difficulty. We, however, cannot look upon
it in any other light than a very serious dif-
ficulty to telegraphing through the ocean,
even if the cable were laid. Could the con-
ductor wires of the cable be as well insulated as
land lines in dry weather, we have not the
least doubt (leaving the Leyden jar theory
entirely out of the question) that telegraphing
could be performed through the entire ocean.
It is in this feature of ocean telegraphing that
great difficulty is to be apprehended, especially
as the pressure of the water on the submerged
cable at two miles depth (where it was broken)
amounts to 4,563 pounds on each square inch.
The pressure of the ocean at great depths has
forced salt water through the pores of sealing-
wax into a bottle containing fresh water; and
if it does so with the gutta pereha coating of
the cable, the subtle electric wave never can
be transmitted from Ireland to Newfoundland.
It has been stated that a section of the cable
was submitted to the hydraulic pressure of
four tuns in a box, and that it withstood this
test perfectly. But a small leak in a short
section would be of very little consequence
it is a very different thing, however, when
perhaps a thousand small leaks oceur in sev-
eral hundred miles of cable. In the former
the loss would scarcely be noticed; in the
latter, the entire current would be dissipated.
	We have pointed out, as we view it, the
real cause of the catastrophe to the telegraph
cable. It was not exactly owing to an indis-
creet order of Mr. Bright, (though that imme-
diately brought on the fatal result,) but the
want of certain means and efficient mechan-
ism to provide for every contingency of strain
upon the cable, and without which it never
can be laid. Such mechanism can surely be
constructed, and the pressure or strain upon
the cable regulated by graduated springs to
an hairs breadth.
	By the latest accounts from England, it is
reported that the Directors of the Company
have come to the conclusion to delay the at-
tempt to relay the cable until next summer.
This decision, in our opinion, amounts to a
confession that the failure of the undertaking
was more complete than has been reported,
and th~tt there is some disagreeable fact con-
nected with it, not yet given to the public;
it has also the appearance of an attempt to
delay the enterprize indefinitely. We insist,
however, that they are bound, in honor, by
the means placed at their service, by what
has been done, and by what has failed to be
done, to lay that submarine cable safely
through the Atlantic, whether or not a single
mes age should ever pass from shore to shore
thron 0h it.

Electricity.
	How often does each one of us make use, in
some way or other, of this mighty force, which
we have, as it were, chained down and trained
to our will! And yet how few of us ever
turn aside from our daily avocations to in-
quire what this electricity is, from whence it
comes, and whither it goes! We acknowledge
its existence and make a most material use of
its powers, and then we stop, just when we
might commence an investigation full of in-
terest and instruction. Let us take the initia-
tive, and give a brief exposition of the results
of the latest experiments into the nature of
this science, chiefly taken from the works of
lvi. A. De ha Rive and Professssr Faraday, of
Europe, and many experimenters in this
country ; and here we may remark that it is
always the aim of the ScIENTIFIc AMERIcAN
to give the names of the great men of science
to whom we are indebted for information, not
so much to vouch for its authenticity as to
carry out the principle of Honor to whom
honor is due. All material substances (solids,
fluids, and gases,) are capable of being re-
solved into a certain number of so-called ele-
ments, or substances which have resisted all
attempts to be split up into any other sub-
stances, and it is to be proved that all these
elements are composed of infinite molecules or
atoms, which are supposed to be indivisible.
These are so minute that the most powerful
microscope has not detected them; but science
has demanded that there must be some ulti-
mate form of matter acknowledged xvhich
shall be a starting point from whence to ex-
plain ahh the various phenomena that comes
within our view, and as this atomic form is
the only one that will do this, it is received
throughout the world as the correct idea.
Moreover, each of these atoms has a definite
weight, or rather relative weight, compared
with the atoms of another substance, and they
will combine with other substances in the
proportion of those combining matters
equivalents or weights. This theory was
first introduced by John Dalton, of i\Ianches-
ter, Eng., at the commencement of this cen-
tury, and is the atomic theory of matter to
which every man of science must subscribe, or
he cannot explain the phenomena of nature.
What, then, is electricity? It is a change in
the arrangement of these particlesa moving
of them among themselvesand as there is
no rest in nature, electricity is always being
developed. Some assert that these particles
are always revolving, even in the most quiet
state of the body which they compose; others
again tell us that they never move of them-
selves, but require to be excited into motion;
and that then the motion is carried on in a
wave-like progression continuously. Which-
ever way this may be, it is certain that a
change in the arrangement of the molecules of
matter must take place before electricity can
be developed, and that it is never developed
without such a change. For instance, the
ordinary tele0raph arrangement : the source
of their electrical force is a voltaic battery,
which consists of two dissimilar metals and a
dilute acid. The acid, by chemical action,
produces motion in the atoms composing the
metals; these, by induction or sympathy, do
the same with the wires, and so the motion
which developes electrical force is transmitted
any distance; and by stopping the current
momentarily, and again eontinuin0 it, you
are able to make the required signals. This
is the true philosophy of telegraphy, and from
this instance we adduce the fact that ehectric-
ity is the result of motion. We can, however,
give many others, as, for example, ivhen duc-
tile metals are heated, no electrization takes
place, but when crystals are heated, a change
takes place in the arrangement of their par-
ticles, and electricity is manifested.
	Again, chemical force, heat and electricity,
are so nearly related that one may be made
the measure of the other two, and the amount
of water decomposed into its constituent gases
will tell the amount of electricity consumed to
do it; or the amount of chemical force re-
quired to uiiite them, will give us the quantity
of electricity developed in the change of
atomic arrangement.
	We have spoken of the wave-hike motion of
electricity along conductors by induction, as
in the case of telegraph wires; but in the case
of wires covered with a non-conductor, hike
the Atlantic cable, and surrounded by another
good conductor, as the surrounding iron wire
and water, it is not conducted in this way, for
then the conductor is in exactly the same re-
lations as a Leydenjarwhich is an instru-
ment for (so to speak) storing this force, and
must be considered in a different way to an
ordinary wire suspended in the air. From
this point we may regard the phenomena de-
ecribed by Professor Morse, that the current
grew feebler and feebler as they payed out a
greater length of cable.

The Twenty-ninth Annual Fair of the
American Institute.

SECOND WEEK.

	The ground floor and galleries of the
Crystal Palace are not fihhin0 up as fast as we
would like to see them, and, as yet, the Fair
seems scarcely to be really (although officially)
opened. But the number of visiters is daily
on the increase, and all seem to be satisfied
and edified by tile collection of industrial
trophies exposed to their view. We shall
now proceed to notice a few of the most im-
portant novelties that have arrested our at-
tention during our strolls through the build-
ing, and also say a few new words about
old friends.
	One of the first things that strike us, on
walking up towards the east transept, is a
small crowd gathered on our right hand, and,
of course, we step aside to see the object of
their admiration. Within a railing is a per-
son moving a handle to and fro, and then
taking up an inking roller, he passes it be-
hind a sheet of parchment, and bringing it
back, moves the handle to and fro again. We
at last get nearer, and are then enabled to
discover that this is Lowes Patent Printing
Press ; but it is so unlike the ordinary cum-
bersome arran0ement, that its purpose did not
at first strike us. The bed on which the type
rests and the tympan are of the ordinary con-
struction, with the improvement that the
lowering and raising of the tympan is auto-
matic. The press consists in a conical-shaped
wooden or steel roller, which performs half a
circle over the tympan, thus perfectly and
equally pressing all the type, and giving a
good, clear, and perfect impression. We saw
specimens of common type, bronze color and
wood-cut printing, also engravings printed -
from steel and copper plates, and some beanti- ~Q
ful samples of embossed or die work, both
plain and in colors; and, moreover, the ma-
~h
chine will copy letters with facility. These Y
~</PB>
<PB REF="IMG00034" SEQ="0034" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="30">





presses are made from a size that will print
a sheet of paper measuring five inches by six,
up to any lar0er size required, by the Lowe
Press Company, Boston. They are cheap,
portable and complete, and are ~vell adapted
for small job work or card printing.
	Empire Looms, made by Benjamin &#38; 
Reynolds, Stockport, N.Y.: six of these are in
the same transept, just across from the above-
mentioned printing-press, and attract a great
deal of attention by the noise they make in
the rapidity of their motions. The history of
the weaving and manufacture of textile fab-
rics may be truly said to be a good history
of civilization. First, the platted garments of
the early Eastern nations then the hand
looms, which were first rude and rough, but
still capable of turning out the linens and
muslins of India and the silks of China; these
were improved each step they marched West-
ward, until at last they attained the bight of
pcrfcctiois. They were suddenly abandoned as
too slow an(1 plodding for the rattling nine-
teenth century, go-a-head power looms, of
which class the Empire Looms are among the
best we have ever seen, and for the followin0
reasons they are compact and work with a
steady motion, no shake or jar, as the beam
strikes the weft; they are provided with a
friction instead of a fast and hoome pulley to
receive the power, and throw the picker with
a rocking bar whicls is sure and true. They
will turn out from 40 to 46 yards a day of
cosamosi printing calico, with 64 picks to the
inch. On the whole they appear good and
substantial machines.
	F.	M. Rays (of New York) Volute Car
Spring is worthy of mention, as also the
method adopted to prove its elastic powers,
which consists in a lever of the second order,
the spring being placed close to the fulcrum,
and between it and the weight, which is one
of about 70 pounds at the end of a very long
lever, and the pressure on the spring must be
very great ; still it is perfectly elastic, and
will keep the weight in motion some time
when it is pressed down and freed.
	Geo. W. Ihishop, of Tlrncdelyn, ham ~. ma-
chine for taking up stones from fields or other
places. The inventor calls it a Stone
Picker. It consists in a low platform, (not
unlike that of a reaping machine,) across
which, a piece of wood, shod with iron works
up and down, being lifted off in its descent
and let on the 0round a few inches in advance,
wlieis it is dragged up the platform, and
brings with it any stones and rubbish that are
in its way, arid ileposited them in a receptacle
at the back of the machine. This is effected
by cranks asid connecting rods on the wheels,
and suitable guides on each side of the plat-
form. The inventor states that he has col-
lected ten tons of stones in two hours by this
machine.
	The Union Roller Cotton Gin is a new
invention, which aims at producing a uniform
appearance and condition in the cotton
throughout the season, and is engraved and
described in No. 43, Vol. XII., SCIENTIFIC
AMERICAN. The companys address is No.
6 Liberty street, New York.
	Roys, Wilcox &#38; Co., of Bast Berlin, Coon.,
have a beautiful show of tools employed by
tinners and metal plate workers generally,
among which we would especially notice the
machine for doublin0 and making joints, and
a new metal plate cutter. The gre at difficulty
with these implements usually is, that whiesi
you move the machine, you change the relative
position of the two cutters; but here they are
both mounted on the same frame, aiid are
moved backward and forward without chang-
ing their relative position, so that they do not
require to be re-set with each piece of plate
cut.
	John Stephenson, of New York, exhibits a
new street railroad car (one of the Fourth
avenue line). It is painted a light color out-
sisle, and is an elegant aiid commodious
vehicle ; when you seat yourself inside, you
are not disappoisite d, for the seats are de-
lightfully comfortable. As far as we could
~ judge, ventilation seems to have been at
tended to. The internal decoration is com-
plete; the panels being painted with comic
pieces, tolerably well done.
	E. V. llaughwout &#38; Co., of New York,
have a magnificent stand, on whic they dis-
play china ware of all shapes and patterns,
and fit for nearly every use, beautifully decor-
ated with mild and harmonious colors. Glass-
ware of many kinds and qualities, and silver
and plated ware of the finest quality and de-
sign. They also exhibit a great variety of
cutlery, which, if its quality is only equal to
its polish, is firstrate. But that which struck
us most is the frame of chandeliers orgasohiers,
(the latter is, we believe, the proper word,)
which is over their stand, and forms part of
their show. These gasoliers are some of the
most chaste, elegant and best adapted that we
have ever examined; some of them are gems
of artistic design, yet their useful application
is kept in sight, as there is no attempt to hide
their uhihity by ornament ; hut their neces-
sary parts are made the foundation for much
artistic effect and material beauty.
	Bartlett &#38; Lesley, of New York, exhibit one
of their hot air furnaces for warming and von-
tilatin0 public and private dwellings. The
aim of this furnace is to enable a current of
cold air to pass over an unusually large portion
of heating surface, and be sent out warm
enough to render the dwelling comfortable in
the cold of winter. This furnace has an ad-
vantage over many, namely, it is very com-
pact and easily kept clean, and is not liable
to get out of order in any way.
	The Kerosene Oil, distilled from cannel
coal, gives a most brilliant, clear, and white
light; it is non-explosive, and has double the
illuminating power of coal gas, and is the
cheapest light that can be obtained; it is also
valuable as a lubricator, and will not gum
so, at any rate, say its vendors, and from
what we have seen of it, it does not belie their
statements. Of its comparative cost, we can
say nothing, but of its illuminating power, we
can say that it is a 0ood light, if not a better
than we have ever beheld. It has, liowever,
	drawnack, VIZ., that ii mu~r 1j~ ~
peculiar lamp; the worst of all these new sup-
plies are that they want new apparatus to
render them perfectly practicable, and
we thsink that on this account Kin~ Burning
Fluids crown is quite safe for some time to
come. We are, at all eveals, glad to see the
Kerosene Oil, as it demonstrates the fact that
we are utilitizing our coal in more ways than
one. It is exhibited by the agent of the com-
pany, Austens, of Beaver street, New York.
	Fords Patent American Window is a
useful device for comfort and convenience in
the arrangement of windows. They are so
construeted that they will slide freely up
and down in the sash, and will also open
from the center as a verandah shutter; they
have no rattle or shake, and are thorou~hly
air and water tight. We saw one which
has been exposed to the weather for the
past year, and, with the exception of thepaint
being soiled, it is as good as slew.
	St. John &#38; Browns Patent Reciprocating
Street Sweeping Machine seems to be an in-
vention of some value, and sweeps the dirt into
heaps on either side of it, so that by passing
up and down a street as many times as the
width renders necessary, the whole of the re-
fuse would he thsorou0hly swept to the side
gutters, whlen tIme rain would wash it, or it
could be conveyed away in carts. The office
ii No. 3 Water street, New York. An engrav-
ing of this invention appeared in No. 29,
Vol. XI., SCIENTIFIC AMERICAN.
	Bunkers Life-Preserving and Bathing
Shirts are found swimming about in a tank
of water, and are what may he called a philan-
thropic and humane invention. When not
inflated they may he worn without inconve-
nience on time person, and they are easily in-
flated so as to buoy up the body for an in-
definite length of time. They consist of a
double water and air proof bag, which fits
close to the person; and when in the sea, they
can be filled with air by a few breathings
thronab a pipe. They are light, comfortable,
and highly useful. Had each passenger of
the unfortunate Central America been furnish-
ed with one of these, or another life-preserver
of similar kind, all the lost might have been
saved. But it is useless to mourn over tIme
past; let us learn for the future.
	The pictures, this year, are not very good,
in truth some of the oil paintings are mere
daubs; hut the photographs are excellent.
Those by Gurney, Fredericks, Meade Bros.,
and other artists of New York, are excellent
specimens; while Holmes Beauties of
America are truly beautiful and cheap pic-
tures of many places of historic and local in-
terest on our continent.
	We hope next week to report the Fair com-
plete in all its departments, and that the ma-
chilucry will be in perfect runnin0 order.

An	English Osjinissn of the United States
iPatesit 0111cc Managensesse.

	The London Esipiceer, in copyin~ an article
from the SCIENTIFIC AMERICAN, in reference
to the question of priority of invention be-
tween Kelly and Bessemer, for improvements
in the manufacture of iron, (which question,
as many of our readers will remember, was
decided against Bessemer,) indulges in the
following comments
	We trust our readers will not for one mo-
ment conceive that our admiration of the
Patent Office of the Americans extends to their
mode of granting patents either to their own
countrymen or to forei0ners; or that it will
be thou0ht that we look upon their mode of
charging En0hish inventors about six times as
much as native ones with any other feeling
than that of disgust, considering it most un-
just, and especially so as we make no differ-
ence with regard to American inventors and
those of our own country. Neither have we
failed to notice the late proceedings of the
American Patent Office in relation to Mr.
Bessemers patent. We have no hesitation in
saying that the annulling of a patent once
granted, or the refusal to grant a patent, upon
the ground that some persoss in some remote
age made experiments involving the princi-
ples contasnea in the patent granted or ap-
plied for, is adoptin5, a most dangerous and
unjust principle, and one which cannot fail to
be productive of the most baneful conse-
quences. There is one gratifying circum-
stance attending this annuhhin0 of Mr. Besse-
mers patent, which is this, that the American
press seems ashamed of it, for it has stated
its conviction of the necessity for reform in
this respect, and that a certain time only
should be allowed to elapse after a discovery
or invention has been made, during which the
discoverer or inventor should obtain a patent
or else loose the right of doing so, and that if
he eventually gives up the idea of applying
for a patent, his experiment being made
should be no bar to another person, native or
foreigner, ohtainin~ a patent for the same
tIming, provided it be a bean fide invention.
There can he no doubt that this is a just view
of the case, ad we are very glad to find that
if American inventors are ignorant of what is
right, they cannot plead ignorance in the
future. In another column will he found the
remarks of our scientific cotemporary upon
this subject, and we trust that thley will not be
the only ones made in Mr. Bessemers behalf.
We should very much like to know the exact
meaning of an original or first inventor, or
how it is possible to ascertain whether an in-
ventor is an original one or not; further, we
should like to know whether there are any
cases on record of an American inventor hav-
ing obtained a patent, and of his patent hav-
ing been annulled by the discovery that
drawin~s of his invention were made by some-
body else eight years before. We would al-
most undertake to say that the American
Commissioner of Patents could point to no
such case. We are not disposed to be too
harsh, nor do we wish uncharitably to inter-
pret the decision of the American Commis-
sioner of Patents, inasmuch as it would ap-
pear clearly to be American law that one
patentee can supersede another, if he can suc-
ceed in fishing up a few old drawings, and
getting a few persons to swear that what was
just patented was nothing more than what
their friend did ei~ht years before. It is
stated in this case that Mr. Kellys testimony
appears to be reliable in every respect, aimd
for the sake of American inventors we hope
it is; but we cannot help condemning, in tile
strongest terms, tlme principle upon which Mr.
Bessemers patesit has been annulled. We
thmink it would be well for those who imave the
interest of American inventors in their keep-
ing, to sholv lvhnt precedents there exist of
patents being annulled after time lapse of so
long a time; otherwise we much fear that, on
this side of tIme Atlantic, many will suspect
that tile case in point is the first of its kind.
For our own part we sincerely imope it is not.
	In seply to the above, we desire to say that
it has been the n~miform practice of the U. S.
Patent Office, since its establishment, to grant
pateimts to tile original and first inventor; it
matters not to what clime or nation lie may
belong. In pursuing this old practice in thIe
case of Kelly vs. Bessemer, the American
Patent Office only obeyed tIme high require-
ments of the law, without regard to Mr. Bes-
semers ilationahity. Therefore, the Engineer.
betrays inexcusable igimorance when it says
that if American inventors are igiloraIst of
what is right, they cannot plead ignorance for
the future. American inventors are not re-
sponsible for the good or had cimaracter of our
Patent system. They hind no more to do Ivithi its
framing than Dick Turpin had to do with the
preparation of the Westminster Uatechisra; and
to brand them with ignorance of ivhat is right,
or to Ibid them responsible for the defects
lvhich are known and severely felt by them to
exist us the workiimgs of time American Patent
law, is as destitute of justice as it would be to
accuse English iimventors of incitin0 the Se-
poys to their recent rebellion. Unfortunately,
our Congress is made up of politicians who
seemingly care but little for inventors, any
way.
	The present Patent laws were enacted more
than twenty years a0o, and, aithough defec-
tive in some rp~e~, d~0~ III yot hn~ com-
parison with those of any other country. lis
fact, they are superior to the English Patent
law of 1852, or thee one which preceded it, lim-
asmuchi as our laws recognize the legal and
moral rights of the first inventor, and do not
hold out the slightest encouragement to out-
side parties to steal and patent inventions not
their own.
	Mr. Bessemer has not been defrauded of Isis
invention by any trickery on the part of the
American Commissioner of Patents. He
carefully weighed the facts elicited in tIme evi-
dence offered by each party; and if our co-
tenlporary has aimy curiosity to examine the
testimony, copies can be obtained from the
records of our Patent Office, just the same as
in the case of any other legal proceeding. A
question of priority between the applicants is
always a question effect, and is ascertained
by testimony to which both parties contri-
bute. The above case is not an uncommon one;
we occasionally meet Ivith similar ones in our
professional experience; and as law, the
Commissioner of Patents has no other alterna-
tive but to obey it, until Con~ress (not Ameri-
can inventors) shall amend the same.
	Two years since, whien discussing the pro-
posed changes in the American Patent sys-
tem, we took decided ground against time
existing law and practice on the subject of
priority of invention, and also against that
clause in the law which discriminates in refer-
ence to the fees to be paid by citizens and
forei0ners. On these two points, we entirely
agree with our cotemporary, for we are un-
willing to encoura0e the slightest shadow of
unfairness in such matters.

Coal-Brenkes, Patent Extended.

	We are informed that the Commissioner of
Patents has extended Battins coalbreaker
patent for a term of seven years. This patent
hens been the subject of considerable litigation,
and this announcement will unquestionably
stir up a hornets nest amen0 some portion of
the coal interests.	C</PB>
<PB REF="IMG00035" SEQ="0035" RES="600dpi" FMT="TIFF5.0" FTR="UNSPEC" N="31">scientific mt~titan+

	TILE ATLANTIC TELEGILAPII CAOLESince the break-
ing of the cable we have received a great number ef
commumcatiens abeut it frein eur readereeneugh,
prebably, ehould we give place te them, te fill ene entire
number of eur paper. Net desiring te shew any prefer-
ence, we will state tilat they all tend te the same result
namely, that tile cable be bueyed up during the paying
edt, and tile difference between each enly censists in tile
Inetbed ef effecting this result; come propose an india
rubber tube, others bladders, others a large floating
buoy, &#38; c., while many propose moot impracticable
schemes. We are glad that so moch interest has been
excited among OII~ correspondents on this subject, as we
arc Ilappy to receive and read communications from
tileln on scientific subjects. Our only regret is, that we
do not more frequently hoar from the various workshops
of our country.
	D.	B., of N. CYou may safely keep either alcoisol
or opirits of turpentine in zinc cans, if the cans be clean
anti free from blackness or rllot in tile interior before tile
liquids are put in, as neitiler of thens have any affinity
for zinc, and will not cat it away. We are much
obliged to you for tile flattering manner in which you
speak of us, and for the method you have taken of show-
ing your appreciation of our paper, viz., by extending its
cirelliation.
	C.	L., of OhioTile only way of cleaning a bust cut
in freestone, wilich has been badly stained with soap, is
by washing repeatedly with a soft brush and clean tepid
water until the wilsie is dissolved sIlt; but if it isas been
left in too long, it may have permeated tilrough the
whole of the stone, and you could not extract it at all
without, perhaps, leaving it worse tisan it is at present.
	W.	A. C., of WisWe knew of no liquid that can be
colored red that will float on alcohol without mixing,
Ilud tilat will move freely in the containing vessel with-
out becoming united. Such a liquid would be a desidera-
loin.
	II.	B., of mdThe method usually adopted for sllarp-
cuing the blades of cloth-cutters in Yorkshire, Bug., is
by a common hand ilone, hIlt yell migilt do it in a lathe,
provided you are very careful, and keep the cutting edge
quite straigilt. Tisere is no English journal devoted to
tile machinery of the woolen manufactures, but we think
yen would find all the novelties in either tile Art izan
the Mechanics Megeerisse, or the Engineer.
	M.	B., of N. Y.The method we adopted of ascertain-
ing tile pressure of a given nssmber of istinsepheres is
siluply nellitiplying them by fifteen, tisat being the num-
ber of pounds to the square inch with which one atmos-
phere presses against any body. Although the volIlme
varies on account of tile elasticity of gases, the pressure
does not. Our coneltIsions were deduced from the ex-
periments of many able pIllIsseptIerA
	It. M. It., of N. C.Tise American sumac is very ash-
done used for tanning. Nearly the whole used in this
country is imported from Sicily. Should you, however
wish to try home-grown, you must cut it wisen young
and full of sap, and use only tise berry. It must be dried
in tise shade, as the sun will spoil it.
	XV.	H. E., Ind.XVe should be glad of some further
particulars of the pilenomena you mention, wisen we
may be able to give our opinion.
	J.	B., of OllisWe pave received your communica-
tion on maple sugar, and feel glad tisat you have suc-
ceeded in granulating it by simply boiling.
	L., of CalPostage stamps are gummed by means of
a isand brush, which lays on the gum tragacanib or
arabic, the latter being tise meet usually employed.
	J.	W. B., of PaWe do not know of any luanufac-
turer of calcined silica in the United States, but per-
haps some of our correspondents may do so, and tisey
ivili kindly give us tile information.
	XV.	C., of MassYour tiseory of the passage of elec-
tricity tilcough thee Atlantic cable we do not think cor-
rect. eVe publish tisis week an article on this subject
entitled Electricity.
	A.	H., of WisThse best metisod you can adopt to
preserve meat fresh is by placing it in hermetically
sealed cane, having first cxpehlcd all air, by packing it
while the cans are in Isot water, and soldering up im-
mediately.
	C.	W. F., of WieThe sllbject of tise divining rod or
dowsing fork ilaving been fishy discussed in lisle jour-
nal, we tie not wisis again to enter into it, as it has lost
its inter~st to our readers.
	5.	0. M., of N. Y.Ssschs a noachine for laying a tele-
grapisic cable over a plain or prairie, by digging a fur-
row for it to lie in, would not be patentable, witisoni you
have some new and neaterial modification in the ma.
chinery, as suds machines Isave been used in this
country, and are common in England, where tisey are
sssed for digging drains and laying hollow train tiles in
tise ground. They perform all the operations you men-
tionneatly dig tile furrow, lay thee tiles, and cover them
up, leaving tile surface level and compact.


	Money received at the Scientific American Office on
accosent of Patent Office business, her thee week ending
Saturday, September 20, i817

A.	G. A., of Ill., $30; C. S., of Pa., $30; J. H., of
	IlL, $21; It. B., of La., $23; C. XV. B., of N. Y., $21;

D.	G.,of Ii. I., $30; J. 11., of La., $20; F.&#38; Co.,of N.
	Y., $100; A. II., ofN. Y., $10; W S XV ofL I $10;

P.	&#38; C., of Ohio, $10; J. E. N.,of N. t., $30; L. A. C.
	B., of Iii., $30; II. S. B., of N. Y., $25; It. Ii., of L. I,

	$30; E. L. V., of Pa., $21; E. P. II., of N. Y., $21.

		Specifications and drawings belonging to parties wills
~ the following initials Isave been forwarded to the Patent

	Office during thee week ending Saturday, Sept. 26, 1517:

II.	S. B., ofN. Y.; J. II., of Iii.; E. It, of L. I.; E
~	T.,ofPa.; G. XV. B.,of N. Y.; A GA ofIhl It.
H. B., of Ohio; C. &#38; C., ofN. II.; E. P. It., ofN. Y.



,55
IMPORTANT TO INVENTORS.
A1~RICAN AND FOREWiN PATENT
	LICITORSMesers. MUNN CO., Proprie-
tors of the SCIENTIFIC ASIEsIICAN, centinuue to procure
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long experience we have had in preparing specifications
and drawings heas rendered us perfectly conversant with
thee mode of doing business at tile United States Patent
Office, and wlthe moot of thee inventions wisich have been
patenteth. Information concerning tise patentability of
inventions is freely given, without charge, on sending a
model or drawing and description to lisle office. Con-
sultation may be head with tise firm, between nine and
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street, NewYerk. Our brands offices are corner of F
and Seventh streets, Waohsington, B. C.; No. 66 Clean-
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Conemunicatisus and remittances sheould be addressed
to	MUNN &#38; CO.,
No. 128 Fielton ot., New York.
	Thee annexed letter from thee hate Comneissioner of
Patents we commend to thee perusal of all persons in-
terested in obtaining patents
	Messne. MCNN &#38; Co. I take pleasure in stating that
while I held tile office of Comunissioner of Patents,
MOnO TIIAN ONO-FOusTu OF AOL THE 55U51N555 OF TIlE
OFFICE came through yosur hands. I have no doubt that
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course with thee office, a marked degree of promptness,
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	Yosers. very truly,	CIIAS. MASON.
August 14, 1837.

Thee best theme of its size and priceby maiL
THE ILLIJ~ThIATEJ~ ANNUAL REGIS-
TER OF IIURAL AFFAIRS FOR 1858(ontaiu.
tug practical iniormation for hoe farmer and horticultur-
ist. Embellished with 139 engravings, including hessees,
fames, buildings, impleusents, domestic animals fruits,
flowers, etc. By J. J. Thomas. Pubhisleed by Lutleer
Tuseker &#38; Son, Albany. Price, prepaid by mail, 25
cents. Ties trade ssspphied by FOWLEB &#38; WELLS,
No. 308 Broadway, New York.


m HE ADVERTISER, XVIIO HAS
	I ral years experience in neaking gray and mallea-
ble iron castings, and in other branches of the iron busi-
ness, offers his services to fleece in need, as manager, su-
perintendent, or agent. Address 5. P. OSTROM,
Ehizabethpert, N. J.

	PORTABLE STEAM RADI-
C HE~TER5
ORFor heating parlors, dining-rooms, &#38; c.,
with gas, wood, or coal; patented June 30, 1837. For
right. in thee United States and Europe apply to the un -
dersigned. enclosing stamps. No agents will be ap-
pointed.	I. H. CHESTER.
	Ciiecinnati, Ohio.


	A MECHANICALENGINEER,OFMUcI{
	peciahly cotton, wishes for a situation; one ef neuch re-
apenoibihity prefes-red. Address
	GEORGE COPELAND, Nerib Gray, Me.



F OR SAWYERS COMPANION, APPLY
	It. PARSONS,	to MUNN
&#38; CO., New York City. Price $1 by mail.

J ACTiSONS DETACHABLE SAFETY
CABINRights for sale, and descriptive pamphlets
fuirnished. Tisis inventien would have saved many
hives and all the treasure on the Central America. Ad-
	dress	XV, It JACKSON, Patentee,
	Baltimore, Md.

T HE	COMBINATION PATENT PORTA-
E UPRIGHT STEAM SAXV-MILLThis miii
	is new acknowledged to be thee cheapest, most practical
and efficient lumber-manufacturing machine in tise
world. It is the only portable reciprocating mill float
has ever met with perfect success. Its entire cool, with
li-horse power, warranted to saw from three to four
thousand feet of inch boards in twelve hours, (the entire
estabhiehement complete, read~s for ronning) is but $1,050.
Send for circular. J. M. EMERSON &#38; CO.,
111 Broadway, New York.

MACHINISTS TOOLS  CARPENTER &#38; 
PLASS, 479 Fret ave., New York, have conuf ant-
ly on hand, and make to order, all kinds of macisiniets
tools, of suiperior quality, particularly adapted for rail-
way companies, steans engine builders, &#38; c., whose or-
ders are respectfully solicited, and shipped at short no-
tice. Terms moderate. Also a few uscond-hand tools
one 16 ft. and one 5 ft. iron planer, too slide lathes, 12
and 16 ft., and one 8 ft. face lathe Also one 9-horse
steam engine, and one 20-horse tubular boiler.


p oss PORTABLE BURR STONE MiLL
IL For whoicis over seventy preminnas have been
awarded in this country and Eterope. It will grind with
less than half the power, and make better flour and
meal than any ether mill. It is the most durable and
thee cheapest miii in the market. Prices mange from $100
to $170. Portable and Stationary Engines of all sizes,
Shingle Machines, &#38; c. Send for circulars.
5.	M. EMERSON &#38; CO.,
Dealers in Improved Machoinery,
No. 371 Broadway, New York.

J NCRUSTATION IN STEAM BOILERS
e patent for removing and preventing incruss-
tation in steam boilers. It has been tlsoroughly tested,
and in every instance has given full satisfaction, by me-
nooving all old scale, and pmeventing the formation of
new, keeping use boilers entirely free from incrustation,
witisosut injury to the iron. Satisfactory proof of its good
effects will be given to any one wishing to purchase.
For sale in individual or State rights. All persons will
Please enclose letter stamps ts pay return postage, and
prolupt attention will be given to letters. Address
JAMES M. CLARK, Lancaster, Pa.,
Sole Agent for the United States.

DEPOT FOR CLOUGHS POLISHES
ghs Eagle Liquid Stove Pehish, Choughs
Eagle Furniture Polish; known tisrouughout floe United
States. Orders from Grocers and Druggists supplied
	prempthy.	COOPER &#38; SON,
	195 Pear] street, New York, Wheolseahe Depot.

	OF EMERSONS MAG-
c
NE and PUTNAMS MONTHLYVise first
number of the combined issue of these favorite maga-
zines is now ready for October. 11 is filled with the
choicest productions ol some of the most brilliant evriters
of the day, and is embellished with forty-four splendid
original engravings. It appears in a new dress em-
bracing an elegant classical design on thee cover, aid the
entire work presents ties most attractive appearance. It
is pronounced by all who leave seen it to be floe most
beasutiful specimen of a Magazine ever issued in thts
cosuntry. Price 25 cents a number. $1 a year. Cisub
price, $2. A splendid Library of Forty Large Bound
Volumes is presented to every person whee gets isp a
club of 24 subscribers. Send 23 cents for specimen copy
	and particulars.	J. II. EMERSON &#38; CO.,
		    171 Broadway, New York.


P ATENT SMUT MACHINE  THE SUB-
Lecriberwonid call the attention of famusers and mill-
ers to ills recenthy-patented Smut Macloins, believing it
to be tile best machine out. For description of tise ma-
cleine see Ne. 4, VoL 11, Scientific American. Per rights
	or macisines addrsss	J. It. GATES
		  Eckneanaville, Ohio.
NEW AND SCIENTIFIC INVENTION.-..
A Dr. Cheevers Gaivane-Electrie Regenemalor.Pa
lent issuied January 15, 1856. A circular relating to the
use of the instrument, embracing a general treatise of
atony of the epermalic organs, the result of which lends
to softening the meduhlary substance of evisich thee brain
is composed, may be had 5matis, and will be sent to any
address by mail by their indicating a desire to receive
it. All letters should be directed to Dr. J. CHEEVER,
No. 1 Tremont Temple, Boston.

~ ECOND-HAND STEAM ENGINE AND
k~ Boller for SaleOne 8-horse Upright Steam En-
gine, Boiler 39 inches diametem, 24 feet long, nearly
nose, and in good resuening order. For particulars ad-
dress