Chapter C: M. S., of Wis.--There are no precise proportions observed in

making the coal-tar and gravel walks of which you speak. The aim is to saturate the gravel with the hot tar without surplus. The interstices of the gravel are simply to be filled, and the amount required to do this depends wholly upon the coarseness or fineness of the gravel employed.

W. P. T., of Ohio.--Two teams of horses, of equal strength, pulling against each other, by means of a rope, would create the same tension in the rope, as one of the teams drawing against an immovable object.

W. H. B., of Va.--Ice can be made by compressing air, and, after it has radiated its heat, allowing it to extract the heat of water with which it is brought into contact. The temperature of air at 59 deg. Fah., would be raised, by compressing the air to one fourth its original volume, to 317 deg. Fah; and the air would radiate and absorb again, in expanding, about 190 units of heat.

E. T. H., of Ga.--The friable sandstone, a specimen of which you send us, may, we think, be rendered firmer by soaking it in a solution of silicate of soda, and allowing it to stand till dry.

J. A. V., of Ohio.--The use of steam expansively, by means of cut-off appliances, enables the expansive force of the steam to be utilized, which cannot be done when the pressure is maintained at one standard, and steam admitted through the fall stroke. It takes no more power to do a given amount of work in one case than in the other, but more boiler capacity, and more fuel, as the working power of the steam is more economically applied when the cut-off is used.

Geo. F. R., of Ohio.--Type metal is composed of 3 parts lead and 1 part antimony for smallest, hardest, and most brittle types; 4 of lead and 1 of antimony for next grade; 5 of lead and 1 of antimony for medium sizes; 6 of lead and 1 of antimony for larger types; and 7 of lead and 1 of antimony for the largest.

E. J. M., of Texas.--The term "power of a boiler" means its evaporating power, and in that sense is proper. If its evaporative power be sufficient to perform a given amount of work, it is proper to estimate that work in horse power. Water can not be pumped out of a pipe from which atmospheric air is excluded. A pipe driven into a soil impervious to air, can never yield water unless the water is forced up by hydraulic power, as in the artesian system.

A. P. Y., of N. Y.--You will find descriptions of iron enamelling processes, on pages 297 and 408, Vol. XII. of this journal. It can be done in colors. See Ure's "Dictionary of Arts and Manufactures."

H. C., of Pa.--We do not think increasing the size of the journals of your car axles from 21/2 inches to 6 inches diameter, would make them run lighter.

H. H. A., of N. Y.--The lining up of a beam engine, in a vessel, is a process for which no definite mode of procedure is exclusively applicable. It is an operation to which common sense and judgment must be brought, and for which each engineer must be a law unto himself.

J. S., of Va.--The use of horizontal propellers to force balloons up or down is not a new suggestion. It has been tried, but, we believe, without much practical success.

J. T .S., of N. Y.--You will find further information on the subject of transmitting power by compressed air, in our editorial columns of last week.

* * * * *

APPLICATIONS FOR EXTENSION OF PATENTS.

HARVESTERS.--William T. B. Read, Chicago, Ill., has petitioned for an extension of the above patent. Day of hearing, May 17, 1871.

MODE OF FASTENING SHEET METAL ON ROOFS, ETC.--Asa Johnson, Brooklyn, N. Y., has petitioned for an extension of the above patent. Day of hearing, May 3, 1871.

METHOD OF PRINTING IN COLORS.--Rosalie Croome, Brooklyn, N. Y., has petitioned for an extension of the above patent. Day of hearing, May 3, 1871.

MACHINERY FOR COMPRESSING GASEOUS BODIES.--William A. Royce, Newburgh, N. Y., has petitioned for an extension of the above patent. Day of hearing, May 10, 1871.

PLOWS.--John S. Hall, Pittsburgh, Pa., has petitioned for an extension of the above patent. Day of hearing, May 17, 1871.

CARRIAGE WHEELS.--James D. Sarven, New Haven, Conn., has petitioned for an extension of the above patent. Day of hearing May 24, 1871.

* * * * *

NEW PATENT LAW OF 1870.

INSTRUCTIONS HOW TO OBTAIN LETTERS-PATENT FOR NEW INVENTIONS.

* * * * *

INFORMATION ABOUT CAVEATS, EXTENSIONS, INTERFERENCES, DESIGNS, TRADE-MARKS, AND FOREIGN PATENTS.

* * * * *

For Twenty-five years, MUNN & CO. have occupied the leading position of SOLICITORS OF AMERICAN AND EUROPEAN PATENTS. During this long experience they have examined not less than _Fifty Thousand Inventions_, and have prosecuted upwards of THIRTY THOUSAND APPLICATIONS FOR PATENTS. In addition to this they have made, at the Patent Office, _Twenty-Five Thousand_ Special Examinations into the novelty of various Inventions.

The important advantage of MUNN & CO.'s American and European Patent Agency is that the practice has been tenfold greater than that of any other agency in existence, with the additional advantages of having the aid of the highest professional skill in every department and a Branch Office at Washington, that watches and supervises cases when necessary, as they pass through Official Examination.

MUNN & CO.,

ASK SPECIAL ATTENTION TO THEIR SYSTEM OF DOING BUSINESS.

_CONSULTATION AND OPINIONS FREE._

Inventors who desire to consult with MUNN & CO. are invited to call at their office 37 PARK ROW, or to send a sketch and description of the invention, which will be examined and an opinion given or sent by mail without charge.

A SPECIAL EXAMINATION

is made into the novelty of an invention by personal examination at the Patent Office of all patented inventions bearing on the particular class. This search is made by examiners of long experience, for which a fee of $5 is charged. A report is given in writing.

To avoid all possible misapprehension, MUNN & CO. advise generally, that inventors send models. But the Commissioner may at his discretion dispense with a model--this can be arranged beforehand.

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If a case should for any cause be rejected it is investigated immediately, and the rejection if an improper one set aside.

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MUNN & CO. give very special attention to the examination and prosecution of rejected cases filed by inventors and other attorneys. In such cases a fee of $5 is required for special examination and report; and in case of probable success by further prosecution and the papers are found tolerably well prepared, MUNN & CO. will take up the case and endeavor to get it through for a reasonable fee to be agreed upon in advance of prosecution.

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Are desirable if an inventor is not fully prepared to apply for a Patent. A Caveat affords protection for one year against the issue of a patent to another for the same invention. Caveat papers should be carefully prepared.

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REISSUES.

A patent when discovered to be defective may be reissued by the surrender of the original patent, and the filing of amended papers. This proceeding should be taken with great care.

DESIGNS, TRADE-MARKS, & COMPOSITIONS

Can be patented for a term of years, also new medicines or medical compounds, and useful mixtures of all kinds.

When the invention consists of a medicine or compound, or a new article of manufacture, or a new composition, samples of the article must be furnished, neatly put up. There should also be forwarded a full statement of its ingredients, proportions, mode of preparation, uses, and merits.

CANADIANS and all other foreigners can now obtain patents upon the same terms as citizens.

EUROPEAN PATENTS.

MUNN & CO. have solicited a larger number of European Patents than any other agency. They have agents located at London, Paris, Brussels, Berlin, and other chief cities. A pamphlet containing a synopsis of the Foreign Patent Laws sent free.

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MUNN & CO., No. 37 Park Row, _NEW YORK._

* * * * *

RECENT AMERICAN AND FOREIGN PATENTS.

_Under this heading we shall publish weekly notes of some of the more prominent home and foreign patents._

* * * * *

SELF-ACTING SHACKLE AND CAR BRAKE.--Lyman Alphonzo Russell, Shrewsbury, Vt.--This invention relates to improvements in self-acting shackles and car brakes, and consists in an improved connection of the brakes with the shackle, for automatic operation, whereby the connection may be readily so adjusted that the brakes will not be set in action as when required to back up the train.

FEED BAGS FOR HORSES.--W. A. Hough, South Butler, N. Y.--This invention relates to a new and useful improvement in feed bags for horses, and consists in making the bag self-supplying, by means of one or more reservoirs, the discharge orifices of which reservoirs are closed by a valve or valves.

TRUSS.--Adam Hinoult, Montgomery, N. Y.--This invention has for its object to furnish an improved truss, which shall be so constructed as to yield freely to the various movements of the body of the wearer, while holding the rupture securely in place.

GOVERNOR FOR STEAM ENGINES.--Charles A. Conde, Indianapolis, Ind.--This invention relates to a new method of regulating the movement of the balls of a steam governor, with a view of adjusting the same in proportion to the increased or diminished centrifugal force.

CIRCULAR SAW GUARD.--G. W. Shipman, Ischua, N. Y.--This invention relates to a new and useful improvement in means for protecting the operator and others, near running circular saws, from injury, and it consists in a movable guard, operated by means of the saw carriage, in such a manner that, during the period of danger (when the saw is not cutting), the guard covers the saw, and is thrown back from the saw when the latter is in actual use.

CARPET-CLEANING MACHINE.--J. C. Craft, Baltimore, Md.--This invention relates to a machine, through which a carpet may be passed, and so beaten and brushed, during its passage, as to come out of the machine thoroughly cleansed. The invention consists in the peculiar construction and arrangement of beaters and brushes for effecting this result.

COMBINED COTTON AND CORN PLANTER.--L. A. Perrault, Natchez, Miss.--This invention relates to improvements in machinery for planting seed, and consists in a combination, in one machine, of a seed-dropping apparatus, adapted for corn, and another adapted for cotton, in a manner to utilize one running gear for the two kinds of seed, and thereby save the expense of separate gear for each.

LIME KILN.--T. A. Kirk, Kansas City, Mo.--This invention has for its object to furnish an improved lime kiln, which shall be so constructed as to enable the kiln to be worked from the front, in firing and in drawing the lime and ashes, which will not allow cold or unburnt rock to pass through, and which will consume its own smoke.

CAR BRAKE.--S. D. Tripp, Lynn, and Luther Hill, Stoneham, Mass.--This invention relates to improvements in railroad car brakes, and consists in an arrangement, on the locomotive or tender, of a steam cylinder and piston, and the arrangement, on the cars, in connection with the brakes, of sliding rods, so that the rod of the car next to the engine or tender, being moved backwards by the piston rod of the above cylinder, will bring the brakes of the rear wheels down upon them, as well as the brakes of the tender, and slacken the speed thereby, so that the rear projecting end of the brake rod will come in contact with the rod of the next car, and set its brakes in action in like manner, and so on, throughout the train. The arrangement of the said brake actuating rods is such that no matter which end of the car is foremost, the wheels of one track will be acted on by the brakes.

COMBINED RULER, BLOTTER, AND PAPER CUTTER.--Hugh S. Ball, Spartanburgh, S. C.--This invention relates to a new and useful improvement in a combined ruler, blotter, and paper cutter, three articles indispensable for the desk, combined in one.

REED FOR ORGANS AND MELODEONS.--Augustus Newell, Chicago, Ill.--The object of this invention is to so construct the tongue-butts, or shanks, of musical reeds, that the same cannot, during the vibratory motion of the tongues, be raised from their seats.

ANTI-FRICTION COMPOUND.--Victory Purdy, Poughkeepsie, N. Y.--This invention relates to a new and useful compound for lubricating railroad car axle journals, and other journal bearings.

* * * * *

QUERIES.

[_We present herewith a series of inquiries embracing a variety of topics of greater or less general interest. The questions are simple, it is true, but we prefer to elicit practical answers from our readers, and hope to be able to make this column of inquiries and answers a popular and useful feature of the paper._]

* * * * *

1.--EMERY WHEELS.--Can I make emery wheels similar to those used in a foot lathe, that will answer for sharpening fine tools, such as gouges, rounds, and hollows, and if so, how shall I proceed?--F. W.

2.--BOILER FURNACE.--I have two boilers, twenty-four feet long and four feet in diameter each, with five ten-inch flues. The fire passes under the boiler, and enters the flues at the back end, passes through the flues, and enters the smoke stack at the front end. I use hard pine wood for fuel. Will some of your many readers give me the best way of constructing the flue under the boiler, from the end of the grate bars to where it enters the flues at the back end, and also state the proper distance from the back wall to the end of the boiler?--N. H.

3.--MEDAL CASTS.--I have some medals which I should like to copy. Having tried several times, and failed, I thought that I would ask advice through your query columns. I do not know of what the medals are manufactured. They are, I suppose, made to imitate bronze. I have tried casting them in plaster of Paris molds, but have had very poor success, as the surface of the medals was covered with small holes. The metal used was lead and antimony, seven to one. I should like to know, if there be any metal that I can cast them of, and bring out the bronze color afterwards, or if there be any metal that I can cast them of, and afterwards color by some solution. Also, of what should I make my molds?--J. E. M.

4.--REMOVING THE TASTE OF TAR FROM RAIN WATER.--Will some of your correspondents tell me if rain water, which runs off a gravel roof, and tastes very strongly of tar, is unhealthy, and if there be anything that will prevent its tasting, as it is very disagreeable for cooking purposes?--C. E. H.

5.--SORGHUM MOLASSES.--How can I separate the molasses from the sugar, in sorghum sugar mush, to make a dry merchantable sugar?

6.--FLUX FOR ALUMINUM.--Will some of your readers tell me, through your columns, the best flux to use in melting and mixing aluminum and copper?

* * * * *

INVENTIONS PATENTED IN ENGLAND BY AMERICANS.

[Compiled from the Commissioners of Patents' Journal.]

APPLICATIONS FOR LETTERS PATENT.

350.--BREECH-LOADING FIRE-ARMS.--Eli Whitney, New Haven, Conn. February 10, 1871.

352.--GOVERNOR.--Stilliman B. Allen, ----, Mass. February 10, 1871.

357.--WINDMILL.--A. P. Brown, New York city. February 11, 1871.

332.--FURNITURE CASTERS.--F. A. Gardner and H. S. Turrell, Danbury Conn. February 8, 1871.

339.--WIRE FABRICS FOR MATTRESSES.--Samuel Rogers, New York city. February 9, 1871.

340.--SCREW PROPELLER CANAL BOATS.--Thomas Main, Pierpoint, N. Y. February 9, 1871.

362.--FLYER FOR SPINNING MACHINERY.--Thomas Mayor and Geo. Chatterton, Providence, R. I. February 14, 1871.

373.--TELEGRAPHIC APPARATUS AND DETECTORS.--W. B. Watkins, Jersey City, N. J. February 14, 1871.

381.--STEAM AND OTHER SAFETY VALVES.--Walter Dawson Scranton, Pa. February 15, 1871.

388.--IRON RAILS AND BARS, AND MODES OF MANUFACTURING THE SAME.--Eldridge Wheeler, Philadelphia, Pa. February 15, 1871.

* * * * *

OFFICIAL LIST OF PATENTS.

ISSUED BY THE U. S. PATENT OFFICE.

FOR THE WEEK ENDING MARCH 7, 1871.

_Reported Officially for the Scientific American._

SCHEDULE OF PATENT FEES

On each Caveat $10 On each Trade-Mark $25 On filing each application for a Patent, (seventeen years) $15 On issuing each original Patent $20 On appeal to Examiners-in-Chief $10 On appeal to Commissioner of Patents $20 On application for Reissue $30 On application for Extension of Patent $50 On granting the Extension $50 On filing a Disclaimer $10 On an application for Design (three and a half years) $10 On an application for Design (seven years) $15 On an application for Design (fourteen years) $30

_For Copy of Claim of any Patent issued within 30 years_ $1 _A sketch from the model or drawing, relating to such portion of a machine as the Claim covers, from_ $1 _upward, but usually at the price above-named._

_The full Specification of any patent issued since Nov. 20, 1866 at which time the Patent Office commenced printing them_ $1.25

_Official Copies of Drawings of any patent issued since 1836, we can supply at a reasonable cost, the price depending upon the amount of labor involved and the number of views._

_Full information, as to price of drawings, in each case, may be had by addressing_

MUNN & CO., PATENT SOLICITORS, 37 PARK ROW, NEW YORK.

* * * * *

112,309.--HOSE SPRINKLER.--William Anderson, San Francisco, Cal.

112,310.--LOCOMOTIVE SPARK ARRESTER.--J. G. Armstrong, New Brunswick, N. J.

112,311.--TOOL FOR CARRIAGE MAKERS' USE.--George Atkinson, San Francisco, Cal.

112,312.--POTATO PROBE.--John A. Beal, Waterford, N. Y.

112,313.--HINGE FOR CARRIAGE DOORS.--George W. Beers, Bridgeport, Conn.

112,314.--STOVE LEG.--James Birckhead, Jr., Baltimore, Md.

112,315.--CLOTHES PIN.--Orris A. Bishop, Chicago, Ill.

112,316.--MANUFACTURE OF ROCHELLE SALTS AND BORAX.--V. G. Bloede, Brooklyn, N. Y.

112,317.--BEEHIVE.--Felix Brewer, Waynesville, Mo.

112,318.--THILL COUPLING.--Theodore Burr (assignor to Allen Muir and Henry Muir), Battle Creek, Mich.

112,319.--EVAPORATING PAN FOR SACCHARINE LIQUIDS.--F. C. Butler, Bellows Falls, Vt., assignor to himself and James B. Williams, Glastonbury, Conn.

112,320.--DOOR SECURER.--William H. Caldwell, Wheeling, W. Va.

112,321.--TOE-CALK BAR.--R. B. Caswell, Springfield, Mass. Antedated March 2, 1871.

112,322.--GLASS FLATTENING FURNACE AND LEER.--James Clabby, Lenox, Mass.

112,323.--SPRING BED BOTTOM.--Alex. Cole, Manamuskin, N. J.

112,324.--WATER WHEEL.--E. E. Coleman, West Cummington, Mass.

112,325.--TOY HORSE AND CARRIAGE.--John B. Cuzner, Bridgeport, Conn.

112,326.--MACKEREL-LINE HOLDER.--E. L. Decker, Southport, Me.

112,327.--SEWING MACHINE.--J. William Dufour, Stratford, Conn.

112,328.--STEAM BOILER.--Edwards Evans, North Tonawanda, N. Y.

112,329.--MEDICAL COMPOUND FOR CURE OF CATARRH AND ASTHMA.--Erastus Field, Ostrander, Ohio.

112,330.--MACHINE FOR GRINDING THE CUTTERS OF MOWERS, ETC.--H. C. Fisk, Wellsville, N. Y.

112,331.--MACHINE FOR MAKING HOOKS AND EYES.--Jeremy T. Ford, San Francisco, Cal.

112,332.--CHURN.--Thompson Freeman, Westfield, Ill.

112,333.--ATTACHMENT FOR REVOLVING MOLD BOARDS FOR PLOWS.--J. S. Godfrey, Leslie, Mich., assignor to himself and S. M. Loveridge, Pittsburgh, Pa.

112,334.--GRAIN CLEANER AND FERTILIZER SIFTER.--J. A. Green, Mill Dale, Va.

112,335.--SCREW PROPULSION.--E. C. Gregg (assignor to A. H. Gregg and C. P. Gregg), Trumansburg, N. Y.

112,336.--SEEDING MACHINE.--P. M. Gundlach, Belleville, Ill.

112,337.--COMPOUND FOR KINDLING FIRES.--J. L. Hannum and S. H. Stebbins, Berea, Ohio.

112,338.--LAWN MOWER.--Benjamin Harnish, Lancaster, and D. H. Harnish, Pequea, Pa.

112,339.--COMPOSITION FOR PAVEMENTS.--C. B. Harris, New York city. Antedated February 25, 1870.

112,340.--SPRING FOR VEHICLES.--John R. Hiller, Woodland, Cal.

112,341.--HARVESTER RAKE.--S. T. Holly, (assignor to John P. Manny), Rockford, Ill.

112,342.--DOOR CLAMP.--Henry O. Hooper, Diamond Springs, Cal.

112,343.--TAPER HOLDER.--Thomas W. Houchin, Morrisania, N. Y.

112,344.--METALLIC GARTER.--Henry A. House, Bridgeport, Conn.

112,345.--BOBBIN WINDER.--Henry A. House, Bridgeport, Conn.

112,346.--METHOD OF KNITTING STOCKINGS, ETC.--Henry A. House, Bridgeport, Conn.

112,347.--APPARATUS FOR EVAPORATING AND CONCENTRATING LIQUIDS.--John Howarth, Salem, Mass. Antedated March 1, 1871.

112,348.--APPARATUS FOR EVAPORATING AND CONCENTRATING LIQUIDS.--John Howarth, Salem, Mass. Antedated March 1, 1871.

112,349.--APPARATUS FOR REMOVING OIL FROM VEGETABLE AND OTHER MATTERS.--Elias S. Hutchinson, Baltimore, Md.

112,350.--APPARATUS AND PROCESS FOR REMOVING OIL FROM GRAIN, SEEDS, ETC.--Elias S. Hutchinson, Baltimore, Md.

112,351.--CHANDELIER.--Charles F. Jacobsen, New York city.

112,352.--CULINARY VESSEL.--Carrie Jessup, New Haven, Conn.

112,353.--MACHINE FOR CUTTING LEATHER.--Aberdeen Keith, North Bridgewater, Mass.

112,354.--ATTACHING KNOBS TO THEIR SPINDLES.--John F. Keller and Nathaniel Sehner, Hagerstown, Md.

112,355.--MITER MACHINE.--T. E. King, Boston, Mass.

112,356.--TAKE-UP FOR CORSET LOOMS.--Julius Kuttner, New York city.

112,357.--ELEVATOR AND CARRIER.--T. W. Lackore, Worth, Ill.

112,358.--APPARATUS FOR BURNING HYDROCARBON OILS.--James R. Lee, Grass Valley, Cal.

112,359.--BURGLAR ALARM.--Robert Lee, Cincinnati, Ohio.

112,360.--TELEGRAPH APPARATUS.--L. T. Lindsey, Jackson, Tenn.

112,361.--HARVESTER.--J. P. Manny, Rockford, Ill.

112,362.--HARVESTER.--J. P. Manny, Rockford, Ill.

112,363.--HARVESTER RAKE.--J. P. Manny, Rockford, Ill.

112,364.--CHEESE CURD SINK.--H. C. Markham, Collinsville, N. Y.

112,365.--MOWING MACHINE.--H. C. Markham and Dewitt C. Markham, Collinsville, N. Y.

112,366.--PROPELLER.--Alex. J. Marshall, Warrenton, Va. Antedated March 3, 1871.

112,367.--OILER.--Edward McDuff and E. D. Forrow, Warwick, R. I.

112,368.--WASH BOILER.--John McInnes, Oxford, Pa.

112,369.--PROPELLING CANAL BOATS.--H. B. Meech, Fort Edward, N. Y. Antedated February 25, 1871.

112,370.--WATER-PROOF COMPOUND FOR COATING CLOTH WOOD, METALS, ETC.--Peter E. Minor, Schenectady, N. Y.

112,371.--COOKING STOVE.--W. N. Moore, Neenah, Wis.

112,372.--BORING MACHINE.--J. H. Pardieck (assignor to himself and S. M. Brown), Acton, Ind.

112,373.--VAPOR BURNER.--R. W. Park, Philadelphia, Pa.

112,374.--MACHINE FOR POINTING BLANKS FOR CULTIVATOR TEETH.--John Pedder and George Abel, West Pittsburgh, Pa.

112,375.--BALE TIE.--J. E. Perkins, San Francisco, Cal.

112,376.--LINING WALLS WITH FELT, ETC.--James Phillips, Chicago, Ill.

112,377.--COOKING STOVE.--Samuel Pierce, Boston, Mass.

112,378.--TACK.--A. A. Porter, New Haven, Conn. Antedated Feb. 25, 1871.

112,379.--MACHINE FOR SHAPING AND CUTTING GEAR CUTTERS.--F. A. Pratt (assignor to the Pratt & Whitney Company), Hartford, Conn.

112,380.--COMBINATION CAMERA AND DEVELOPING BOX.--E. C. Ratzell, Philadelphia, Pa.

112,381.--PUNCHING MACHINE.--J. C. Rhodes, South Abington, Mass.

112,382.--WASHING MACHINE.--J. W. Ricker, Chelsea, Mass.

112,383.--CURTAIN FIXTURE.--Charles Robin. Chester, Conn.

112,384.--MACHINE FOR MAKING PRINTERS' LEADS.--Isaac Schoenberg, New York city.

112,385.--SLIDE VALVE FOR STEAM RIVETING MACHINES.--Coleman Sellers (assignor to William Sellers & Co.), Philadelphia, Pa.

112,386.--MACHINE FOR POLISHING THREAD.--Samuel Semple, Sr., John Semple, Samuel Semple, Jr., and R. A. Semple, Mount Holly, N. J.

112,387.--PAINT BRUSH.--F. S. Shearer, Washington, Ill.

112,388.--BEE HIVE.--S. A. Short, F. J. Short, J. B. Short, and Jasper Kile, Decatur, Ala.

112,389.--APPARATUS FOR REMOVING OIL FROM VEGETABLE AND OTHER MATTER.--Thomas Sim, Baltimore, Md.

112,390.--RETORT FOR PRODUCING BISULPHIDE OF CARBON.--Thomas Sim, Baltimore, Md.

112,391.--UTILIZING THE SILKY DOWN OF THE WILD COTTON.--M. H. Simpson, Boston, Mass.

112,392.--PRUNING SHEARS.--Frank Smiley, Batavia, N. Y.

112,393.--WATER-CLOSET VALVE.--A. J. Smith, San Francisco, Cal.

112,394.--GANG PLOW.--J. W. Sursa, San Leandro, Cal.

112,395.--GRINDING PAN AND AMALGAMATOR.--W. H. Thoss, West Point, Cal.

112,396.--STREET LANTERN.--Augustus Tufts, Malden, Mass.

112,397.--COOKING STOVE.--Alvin Warren, Swanton, Ohio.

112,398.--SAFETY BRIDLE.--James Weatherhead, San Jose, Cal.

112,399.--FIRE GRATE.--George Wellhouse, Akron, Ohio.

112,400.--HAY KNIFE.--G. F. Weymouth, Dresden, Me.

112,401.--CLAW BAR.--Charles Winter, Chillicothe, Ohio.

112,402.--STEAM GENERATOR.--J. C. Woodhead, Pittsburgh, Pa.

112,403.--ANIMAL TRAP.--W. D. Wrightson, Queenstown England.

112,404.--BRUSH.--John Ames, Lansingburg, N. Y.

112,405.--CLOD FENDER.--F. L. Bailey, Freeport, Ind.

112,406.--RULER.--H. S. Ball, Spartanburg, S. C.

112,407.--FANNING MILL.--Benjamin Barney, Time, Ill.

112,408.--ICE-CUTTING MACHINE.--Lafayett Barnum (assignor to himself and A. R. Hale), Bridgeport, Conn.

112,409.--MANUFACTURE OF ICE.--T. J. Bigger, Kansas City, Mo.

112,410.--MACHINE FOR HEADING BOLTS AND SPIKES.--Reinhold Boeklen, Brooklyn, N. Y., assignor to himself and Henry Torstrick New York city. Antedated Feb. 28, 1871.

112,411.--WASHING MACHINE.--Joseph Boswell, L. M. Boswell, Jonathan Palmer, and J. H. James (assignors to themselves and Thomas Starbuck), Wilmington, Ohio.

112,412.--WATER WHEEL.--E. C. Boyles, New York city.

112,413.--COTTON PRESS.--R. M. Brooks, Pike county, Ga.

112,414.--PAPER-CUTTING MACHINE.--Samuel Brown (assignor to himself and C. R. Carver), Philadelphia, Pa.

112,415.--GOVERNOR FOR DIRECT-ACTING ENGINES.--A. S. Cameron, New York city.

112,416.--GOVERNOR FOR DIRECT-ACTING ENGINES.--A. S. Cameron, New York city.

112,417.--BUTT HINGE.--J. W. Carleton (assignor to the Union Manufacturing Co.), New Britain, Conn.

112,418.--MACHINE FOR CUTTING SHEET METAL.--C. R. Choate, East Saginaw, Mich.

112,419.--BIT BRACE.--William Cleveland, Lawrence, Mass., assignor to himself and James Swan, Seymour, Conn.

112,420.--STEAM ENGINE GOVERNOR.--C. A. Conde, Indianapolis, Ind.

112,421.--CARPET-CLEANING MACHINE.--J. C. Craft (assignor to himself and Antonio Rosello), Baltimore, Md.

112,422.--STEAM REGULATOR FOR PAPER DRYERS.--Daniel Crosby, Hampden, Me.

112 423.--METALLIC PISTON AND VALVE ROD PACKING.--G. M. Cruickshank, Providence, R. I.

112,424.--GRAIN-THRASHING AND SEPARATING MACHINE.--John Culham, Grand Rapids, Mich. Antedated Feb. 25, 1871.

112,425.--COOKING STOVE.--David Curtis, Mishawaka, assignor to himself and C. B. Graham, South Bend, Ind.

112,426.--LIGHTNING ROD.--S. D. Cushman, New Lisbon, Ohio.

112,427.--HOSE BRIDGE.--Patrick Daily (assignor to himself and J. J. Kehoe), New York city.

112,428.--COVER FOR OPENINGS IN SIDEWALKS.--William Dale, New York city.

112,429.--ROTARY PUMP.--F. O. Deschamps, Philadelphia, Pa.

112,430.--MACHINE FOR CUTTING FILES.--James Dodge, Manchester, England, assignor to David Blake, Spencertown, N. Y.

112,431.--COUPLING FOR RAILWAY CARS.--Henry Dubs and S. G. Goodall-Copestake, Glasgow, Great Britain.

112,432.--TOBACCO PIPE.--P. J. Dwyer, Elizabethport, N. J.

112,433.--BASKET FOR HOUSE PLANTS.--Albert P. Eastman, Washington, D. C.

112,434.--SULKY PLOW.--Milo A. Elliott, Stratford Hollow, N. H.

112,435.--STRETCHER FOR PAINTINGS.--James Fairman, New York city.

112,436.--BODY LANTERN HOLDER.--Samuel C. Fessenden, Stamford, Conn.

112,437.--STOVE LEG.--Amon L. Finch, Sing Sing, N. Y.

112,438.--PUMP PISTON.--John S. Follansbee and George Doolittle (assignors to the Forrester Manufacturing Company), Bridgeport, Conn.

112,439.--SHOE.--Samuel W. Francis (assignor to himself and W. H. Newton), Newport, R. I.

112,440.--GUARD-FINGER FOR HARVESTERS.--George Fyfe and Chester Hard, Ottawa, Ill.

112,441.--DINING TABLE.--S. R. Gardner (assignor to himself and S. M. Marquette), Independence, Iowa.

112,442.--STEP LADDER.--M. Boland Geary, New York City.

112,443.--OILCLOTH PRINTING MACHINERY.--Ebenezer A. Goodes (assignor to Philadelphia Patent and Novelty Company), Philadelphia, Pa.

112,444.--TENONING MACHINE.--Lyman Gould, Norwich, Conn.

112,445.--PRINTER'S CASE.--Wm. H. A. Gresham, Atlanta, Ga.

112,446.--LAMP CHIMNEY.--Geo. W. Griswold, Factoryville, Pa.

112,447.--GRAIN SEPARATOR.--Philander Griswold, Hudson, Mich.

112,448.--CLAMP FOR THILL COUPLINGS.--John W. Guider (assignor to himself and John Kiefer), St. Joseph, Mo.

112,449.--BIRD CAGE.--Gottlob Gunther, New York city.

112,450.--STOP COCK AND VALVE.--William Haas, New York city.

112,451.--VALVE FOR STEAM ENGINES.--Joseph L. Harley, Baltimore, Md., and Xaver Fendrich, Georgetown, D. C.

112,452.--METALLIC HUB.--John H. Harper, Pittsburgh, Pa.

112,453.--COMPOSITION FOR LUBRICATING MACHINERY.--E. Q. Henderson (assignor to John C. Burroughs and Richard A. Springs) Charlotte, N. C.

112,454.--POST-HOLE DIGGER.--Bryant B. Herrick, Decatur, Mich.

112,455.--DOOR CHECK.--Levi S. Hicks (assignor to himself, J. Perrin Johnson, and John Buell), Peoria, Ill.

112,456.--RAILWAY-CAR BRAKE.--Luther Hill, Stoneham, and Seth D. Tripp, Lynn, Mass.

112,457.--TRUSS.--Adam Hinoult, Montgomery, N. Y.

112,458.--FEED BAG FOR HORSES.--Walter A. Hough, South Butler, N. Y.

112,459.--SHADE HOLDER FOR LAMPS--Mark W. House, Cleveland, Ohio.

112,460.--LAMP CHIMNEY.--Mark Wiggins House (assignor to the Cleveland Non-Explosive Lamp Company), Cleveland, Ohio. Antedated March 1, 1871.

112,461.--HORSE HAY RAKE.--James Howard and E. T. Bousfield, Bedford, England.

112,462.--TONGS FOR ROLLING BARRELS.--Mark W. Ingle, Indianapolis, Ind.

112,463.--PITMAN.--George W. Jayson, Lodi, Ohio.

112,464.--PASTE FOR PAPER HANGINGS.--John Jones (assignor to himself and Henry A. Smith), New York city.

112,465.--TWINE HOLDER.--Edward M. Judd, New Haven, Ct.

112,466.--CLOTHES PIN OR CLASP.--Amos L. Keeports and William Yount, Littletown, Pa.

112,467.--PUTTING UP HAMS.--Samuel Edward Kelly, Philadelphia, Pa.

112,468.--LIMN KILN.--Thomas A. Kirk, Kansas City, Mo.

112,469.--FASTENING FOR SEATS FOR WAGONS OR SLEIGHS.--John G. Knapp and John F. Robertson (assignors of one third their right to James H. Holly), Warwick, N. Y.

112,470.--POTATO PLANTER.--George Knowlton (assignor for one-half his right to N. Haynes), Johnstown, Pa.

112,471.--REVOLVING FIREARM.--Edwin S. Leaycroft, Brooklyn, N. Y., assignor by mesne assignment, to "Colt's Patent Firearms Manufacturing Company," Hartford, Conn.

112,472.--REVOLVING FIREARM.--Edwin S. Leaycroft, Brooklyn, N. Y., assignor, by mesne assignment, to "Colt's Patent Firearms Manufacturing Company," Hartford, Conn.

112,473.--RAILROAD CATTLE-GUARD GATE.--J. H. Mallory, La Porte, Ind.

112,474.--BACK-REFLECTING MIRROR.--Richard Mason (assignor to himself and Matthew Ely), Newark, N. J.

112,475.--VENTILATOR AND CHIMNEY TOP.--James McGowan (assignor to himself and Daniel H. Waring), New York city.

112,476.--APPARATUS FOR RECTIFYING AND REFINING SPIRITS.--Frederick Measey (assignor to himself and Henry D. Fling), Philadelphia, Pa.

112,477.--TIN CAN.--John F. Merrill (assignor to himself and Alexander Stewart), Cincinnati, Ohio.

112,478.--TAKE-UP MECHANISM FOR LOOMS.--John Michna and Joseph Fischer, New York city.

112,479.--COMBINED BAKER AND BROILER.--Wm. H. Miller, Brandenburg, Ky.

112,480.--SHUTTLE FOR SEWING MACHINES.--James D. Moore, Grinnell, Iowa.

112,481.--COTTON CHOPPER AND GRAIN CULTIVATOR.--Daniel Mosely, Osark, Arkansas.

112,482.--SAD AND FLUTING IRON.--Frederick Myers, New York city.

112,483.--REED FOR ORGANS AND MELODEONS.--Augustus Newell, Chicago, Ill.

112,484.--STRAW CUTTER.--Amon Park, Germanville, Iowa.

112,485.--APPARATUS FOR AGING WHISKY AND OTHER SPIRITS.--Josiah Peiffer and Samuel Richards, Valonia, Pa.

112,486.--COMBINED COTTON AND CORN PLANTER.--Louis A. Perrault (assignor to himself and Joseph Huber), Natchez, Miss.

112,487.--FAUCET.--Solomon Pfleger, Reading, assignor to himself and J. S. Pfleger, Tamaqua, Pa.

112,488.--TREADLE.--George K. Proctor, Salem, Mass.

112,489.--LUBRICATING COMPOUND.--Victory Purdy, Poughkeepsie, N. Y.

112,490.--FERTILIZER AND SEEDING MACHINE.--Archibald Putnam (assignor to Elizabeth Putnam), Owego, N. Y.

112,491.--ROTARY PUMP.--George W. Putnam, South Glens Falls, N. Y.

112,492.--HAT BRUSH.--Robert Dunbar Radcliffe, Palmyra, N. Y.

112,493.--REFRIGERATING SHOW CASE.--Thomas L. Rankin, Lyndon, Kansas, assignor to himself and D. W. Rockwell, Elyria, Ohio.

112,494.--DEVICE FOR STARTING AND STOPPING CARS.--Philip Rhoads, Carlisle, Pa.

112,495.--PIPE-MOLDING MACHINE.--George Richardson, Milwaukee, Wis.

112,496.--SULKY CULTIVATOR.--Richard B. Robbins, Adrian, Mich.

112,497.--HAND PLOW.--Nelson Rue, Harrodsburg, Ky.

112,498.--MECHANICAL MOVEMENT.--Edward G. Russell, Ravenna, Ohio.

112,499.--RAILWAY CAR BRAKE.--Lyman Alphonzo Russell, Shrewsbury, Vt.

112,500.--STOVEPIPE CLEANER.--David Sanford, Ashton, Ill.

112,501.--TWINE HOLDER.--Joseph B. Sargent and Purmont Bradford (assignors to Sargent & Co.), New Haven, Conn.

112,502.--DOVETAILING MACHINE.--James M. Seymour, Newark, N. J.

112,503.--WOODEN PAVEMENT.--Eaton Shaw, Portland, Me.

112,504.--GUARD FOR CIRCULAR SAWS.--George W. Shipman, Ischua, N. Y.

112,505.--BREECH-LOADING FIREARM.--Dexter Smith and Martin J. Chamberlin, Springfield, Mass.

112,506.--SPARK ARRESTER.--James Smith, Altoona, Pa.

112,507.--HORSE HAY RAKE.--Solomon P. Smith, Waterford, N. Y.

112,508.--PLOW.--S. M. Stewart, New Harrisburg, Ohio.

112,509.--MEDICAL COMPOUND FOR TREATING FEVER AND AGUE.--George E. Swan, Mount Vernon, Ohio.

112,510.--DEVICE FOR COOLING JOURNALS OF CAR AXLES.--Henry G. Thompson, Milford, Conn.

112,511.--COOLING JOURNAL OF CAR AXLES.--Henry G. Thompson, Milford, Conn.

112,512.--COOLING JOURNAL OF CAR-WHEEL AXLES.--Henry G. Thompson, Milford, Conn.

112,513.--DEVICE FOR COOLING JOURNALS OF RAILWAY CARS.--Henry G. Thompson, Milford, Conn.

112,514.--NON-HEATING HANDLE FOR SAD IRONS, ETC.--William H. Towers, Boston, Mass.

112,515.--LUBRICATOR.--John Erst Uhl, Renovo, Pa.

112,516.--COMBINED CORN PLANTER AND CULTIVATOR.--Franklin Underwood, South Rutland, N. Y.

112,517.--KING BOLT.--Wendel Vondersaar, Indianapolis, Ind.

112,518.--WHEAT ROASTER.--George W. Waitt (assignor to himself and Robert B. Fitts), Philadelphia, Pa.

112,519.--PLASTER SOWER.--Thomas J. West, Alfred Center, N. Y.

112,520.--TICKET HOLDER.--Henry Wexel, Providence, R. I.

112,521.--TOBACCO PRESS.--Abraham N. Zell, Lancaster, Pa.

112,522.--COMBINED BAG HOLDER AND SCALES.--William Zimmerman, Lebanon, Pa. Antedated February 25, 1871.

112,523.--BREECH-LOADING FIREARM.--James M. Mason, Washington, D. C.

* * * * *

REISSUES.

4,287.--TREATING FRUITS TO DRY, SACCHARIFY, AND PRESERVE THEM.--Charles Alden, Newburg, assignor of part interest to Alden Fruit Preserving Company, New York city. Patent No. 100,835, dated March 5, 1870; reissue No. 4,011, dated June 7, 1870.

4,288.--DEVICE FOR SECURING PULLEYS TO SHAFT.--John H. Buckman (assignor to himself and Peter W. Reinshagen), Cincinnati, Ohio. Patent No. 98,144, dated December 21, 1839.

4,289.--SHAWL STRAP.--George Crouch, Westport, Conn. Patent No. 82,606, dated September 29, 1868.

4,290.--ATMOSPHERIC DENTAL PLATE.--Nehemiah T. Folsom, Laconia, N. H. Patent No. 60,871, dated January 1, 1867.

4,291.--PESSARY.--William R. Gardner, Leonardsville, N. Y. Patent No. 105,191, dated July 12, 1870.

4,292.--DIVISION A.--SKATE.--James L. Plimpton, New York city. Patent No. 37,305, dated January 6, 1863; reissue No. 3,906, dated April 5, 1870.

4,293.--DIVISION B.--SKATE.--James L. Plimpton, New York city. Patent No. 37,305, dated January 6, 1863; reissue No. 3,906, dated April 5, 1870.

4,294.--APPARATUS FOR PITCHING BARRELS.--Louis Schulze, Baltimore, Md. Patent No. 106,964, dated August 30, 1870.

* * * * *

DESIGNS.

4,694.--PICTURE FRAME.--John H. Bellamy, Charlestown, Mass.

4,695.--BELL CRANK AND ESCUTCHEON.--Pietro Cinquini, West Meriden, Conn., assignor to Parker & Whipple Company.

4,696.--PEDESTAL FOR A CAKE DISH.--George Gill (assignor to Reed & Barton), Taunton, Mass.

4,697.--TABLE CASTER.--William Parkin (assignor to Reed & Barton), Taunton, Mass.

4,698.--BUCKLE FRAME.--John E. Smith, Waterbury, Conn.

4,699.--BACK OF A CHAIR OR SOFA.--George Unverzagt, Philadelphia, Pa.

* * * * *

TRADE-MARKS.

182.--HAT.--Nathan A. Baldwin, Milford, Conn., James H. Prentice, Brooklyn, and John R. Waller, New York city.

183.--SPOOL COTTON.--Lewis Coleman & Co., Boston, Mass.

184.--SALVE.--Robert Dobbins, Binghamton, N. Y.

185.--SOAP.--Leberman & Co., Philadelphia, Pa.

186.--MEDICINE.--Ridenour, Coblentz & Co., Springfield, Ohio.

187.--PAPER.--Union Manufacturing Company, Springfield, Mass.

* * * * *

EXTENSIONS.

WAGONS.--Edgar Huson, Ithaca, N. Y. Letters Patent No. 16,648, dated February 17, 1857; reissue No. 2,500, dated March 5, 1867.

OPERATING VALVE OF STEAM ENGINE.--Samuel R. Wilmot, Bridgeport, Conn. Letters Patent No. 16,668, dated February 17, 1857.

HINGES.--John David Browne, Cincinnati, Ohio. Letters Patent No. 16,678, dated February 24, 1857.

KEEPER FOR RIGHT AND LEFT HAND DOOR LOCKS.--Calvin Adams, Pittsburgh, Pa. Letters Patent No. 16,676, dated February 24, 1857.

SOLAR CAMERA.--David A. Woodward, Baltimore, Md. Letters Patent No. 16,700, dated February 24, 1857; reissue No. 2,311, dated July 10, 1866.

CAST SEAMLESS THIMBLE SKEINS FOR WAGONS.--John Benedict, Kenosha, Wis., administrator of Andrew Leonard, deceased. Letters Patent No. 16,688, dated February 24, 1857; reissue No. 575, dated July 27, 1858; reissue No. 1,229, dated October 8, 1861.

MODE OF CASTING SEAMLESS SKEINS FOR WAGONS.--John Benedict, Kenosha, Wis., administrator of Andrew Leonard, deceased. Letters Patent No. 16,688, dated February 24, 1857; reissue No. 575, dated July 27, 1858; reissue No. 1,228, dated October 8, 1861.

BREECH-LOADING FIREARMS.--William Cleveland Hicks, Summit, N. J. Letters Patent No. 16,797, dated March 10, 1857; reissue No. 1,952, dated May 9, 1865; reissue No. 3,798, dated January 18, 1870; reissue No. 3,860, dated March 1, 1870.

SEEDING MACHINE.--Lewis B. Myers and Henry A. Myers, Elmore, Ohio. Letters Patent No. 16,772, dated March 3, 1857.

* * * * *

DISCLAIMER.

SOLAR CAMERA.--David A. Woodward, Baltimore, Md. Letters Patent No. 16,700, dated February 24, 1857; reissue No. 2,311, dated July 10, 1866. Filed February 23, 1871.

* * * * *

CITY SUBSCRIBERS.--THE SCIENTIFIC AMERICAN will be delivered in every part of the city at $3.50 a year. Single copies for sale at the News-stands in this city, Brooklyn, Jersey City, and Williamsburgh, and by most of the News Dealers in the United States.

* * * * *

RECEIPTS--When money is paid at the office for subscriptions, a receipt for it will be given; but when subscribers remit their money by mail, they may consider the arrival of the first paper a bona-fide acknowledgment of their funds.

* * * * *

ADVERTISEMENTS.

* * * * *

_The value of the_ SCIENTIFIC AMERICAN _as an advertising medium cannot be over-estimated. Its circulation is ten times greater than that of any similar journal now published. It goes into all the States and Territories, and is read in all the principal libraries and reading-rooms of the world. We invite the attention of those who wish to make their business known to the annexed rates. A business man wants something more than to see his advertisement in a printed newspaper. He wants circulation. If it is worth 25 cents per line to advertise in a paper of three thousand circulation, it is worth $2.50 per line to advertise in one of thirty thousand._

RATES OF ADVERTISING.

BACK PAGE - - - - 1.00 A LINE,
INSIDE PAGE - - - 75 CENTS A LINE,

_for each insertion_.

_Engravings may head advertisements at the same rate per line, by measurement, as the letter-press_.

* * * * *

TO MANUFACTURERS OF KNITTED GOODS.

JOHN KENT is now in England, completing arrangements so as to be able to supply his American friends with his improved Knitting Machines with greater dispatch, and with all the latest improvements. He would beg to call especial attention to

The Improved Rib Top Frame, now so well known, and acknowledged to be the best rib top frame ever built, for speed and quality of goods produced. Price, delivered free in New York, $520, currency.

The Improved Circular Web Frame, for drawers and shirts, built of any size and gage. Price for a 4-head set, 17 inch to 20 inch diameter, $810, currency, delivered free in New York.

The Circular Stocking Frame, from 2 in. to 51/2 in. diameter. These circular frames, with my last improvements, are as near perfection as possible.

The Patent Full-fashioned Shirt, Drawers and Stocking Frames produce the most perfect goods ever made by steam-power machinery, and cost fifty per cent less to keep in repair than any other Knitting Machine. Built 10 to 24 gage, and from 30 to 140 inch wide, to order.

The Improved Circular Looping Frame, for putting on shirt cuffs, drawers bands, clearing the top of circular shirts, &c., built to order, of any size, from 2 in. to 22 in. diameter, and of any gage.

Steel Needles and Sinkers to pattern.

Persons wishing to order while Mr. Kent is in England, will please address JOHN KENT, Nottingham, up to April 12th, or, if they prefer, may send through depot.

Address JOHN KENT, 348 Pearl st., New York.

* * * * *

PUMPS.--For Description, Price Lists etc., of the Best Centrifugal Pump ever invented, with Overwhelming Testimony in its favor, send for new illustrated pamphlet (40 pp.) to Messrs. HEALD, SISCO & CO., Baldwinsville, N. Y.

* * * * *

BRICK PRESSES. FOR RED AND FIRE BRICK. Factory 309 S. Fifth street, Philadelphia, Pa. S. P. MILLER.

* * * * *

ST. JOSEPH, Mo., Nov. 10, 1870.

T. R. BAILEY & VAIL, LOCKPORT, N. Y.:

GENTLEMEN:--The Lathe you shipped me has arrived, and I have it in full operation. It works perfectly, and I think it the best lathe made in the world for Bedstead and Chair work. I would recommend it to any one desirous of obtaining such a lathe. Yours truly,

H. R. BRISTOL.

* * * * *

WOOLEN MILL FOR SALE.

With House and 3 acres of land, Seymour, Ct., (Naugatuck Valley,) 2 miles from R. R. depot. Never-failing stream. 3 ft. fall, dam and wheel in good condition. Inquire of JAS. ORMSBEE, on the premises.

* * * * *

PORTABLE & STATIONARY STEAM ENGINES AND HOISTING ENGINES. A good article at low prices. Every machine warranted. Send for descriptive Price List.

H. B. BIGELOW & CO., NEW HAVEN, CONN.

* * * * *

PATENT BANDSAW MACHINES

Of the most approved kinds, of various sizes, to saw bevel as well as square, without inclining the table, by FIRST & PRYIBIL, 452 to 456 Tenth ave., New York. Price $250, $275, $350, and $400. At present (Oct. 16), there are in operation, in this city alone, 88 of our machines. Send for circular. Manufacture, also, an improved saw-filing apparatus; price, $30. Have also on hand a large stock of best FRENCH BANDSAW BLADES.

* * * * *

L. & J. W. FEUCHTWANGER, 55 CEDAR ST., NEW YORK, CHEMISTS, MANUFACTURERS, AND IMPORTERS OF SPECIALITIES, SILICATES, SODA AND POTASH, CHLORIDE OF CALCIUM, PEROXIDE OF MANGANESE, HYDROFLUORIC ACID, METALLIC OXIDES, STEEL AND GLASS MAKERS' AND POTTERS' ARTICLES, PUBLISHERS OF TREATISES ON "SOLUBLE GLASS," "GEMS," AND "FERMENTED LIQUORS."

* * * * *

PIMLICO BRACES, SOMETHING NEW.

THIS invention is based on a strictly scientific principle, and is a valuable improvement on old style suspenders. It is simple in construction, and combines the qualities of Brace and Suspender. They are unequaled for elegance, durability and comfort. Manufactured at the Monumental Silk Works, Baltimore. JOHN M. DAVIES & CO., Sole Agents, 384 & 386 B'd'y, N. Y.

* * * * *

DR. J. ARMSTRONG'S (Patent) IMPROVED HEATER, FILTER, LIME EXTRACTOR, AND CONDENSER COMBINED, FOR STEAM BOILERS.

MANUFACTURED BY ARMSTRONG & STARR, Toledo, Ohio.

_Send for Circulars._

Formerly Armstrong & Welsh.

* * * * *

FOR SALE.--An Engine, 12x36 in. cylinder, and two Boilers, 4x15 feet, in good order, will be sold cheap. J. J. TAYLOR & CO., 68 Courtlandt st., New York.

* * * * *

HUNTING, Trapping and Fishing. All about it. SENT FREE. Address "HUNTER," Hinsdale, N. H.

* * * * *

FIRST PREMIUM awarded by Am. Inst., 1870 MICROSCOPES, } Illustrated price list and catalogues MAGIC LANTERNS, } free to any address. T. H. McALLISTER, Optician, 49 Nassau st., N. Y.

* * * * *

Rare and Beautiful Flowers --AND-- CHOICE VEGETABLES Can always be obtained by Sowing

BLISS'S SELECT GARDEN SEEDS.

The Seventeenth Annual Edition of their celebrated "SEED CATALOGUE AND GUIDE TO THE FLOWER AND KITCHEN GARDEN," is now ready for distribution. It contains FOUR BEAUTIFULLY COLORED LITHOGRAPHS, and about 300 choice Engravings of favorite Flowers and Vegetables, 136 pages of closely-printed matter, and a list of Twenty-five Hundred species and varieties of Flower and Vegetable Seeds, with explicit directions for their culture, and much other useful information upon the subject of Gardening. A copy will be mailed to all applicants inclosing 25 cts. Regular customers supplied gratis. Address

B. K. BLISS & SONS, Nos. 23 Park Place, and 20 Murray st., P. O. Box No. 5712. New York.

* * * * *

SCIENCE FOR THE MILLION.

THE BOSTON JOURNAL OF CHEMISTRY,

DEVOTED TO THE SCIENCE OF HOME LIFE, THE ARTS, AGRICULTURE, AND MEDICINE.

JAMES R. NICHOLS, M. D.,} WILLIAM A. ROLFE, A. M.,} Editors.

ONE DOLLAR PER YEAR.

A paper which commends itself at once to Physicians, Druggists, Chemists, Teachers, Farmers, Mechanics--in short, to Professional and Practical Men of every class.

The Domestic Recipes and Formulae for Art Processes are of themselves worth many times the cost of subscription.

---> SPECIMEN COPIES SENT FREE.

Address BOSTON JOURNAL OF CHEMISTRY, 150 Congress st., Boston.

* * * * *

FOOT LATHES, And all kinds of small tools. Illustrated catalogue free. GOODNOW & WIGHTMAN, 23 Cornhill, Boston, Mass.

* * * * *

AGENTS WANTED.--To sell Stephens' PATENT COMBINATION RULE, which embraces a Rule, Level, Square, Plumb, Bevel, Slope Level, T Square, etc., in one compact tool. These instruments retail at $3.50 each, and energetic salesmen can make money by selling them among mechanics. We warrant them in every particular, as the construction and graduation is faultless. Send for descriptive circular, cuts, and terms.

STEPHENS & CO., Riverton, Conn.

* * * * *

FELT. THE BEST, CHEAPEST and MOST DURABLE non-conductor known, for sale by the Original Manufacturer, at the BOILER FELTING WORKS, 46 Courtland st., New York.

* * * * *

UNIVERSAL WOOD WORKER. For Agricultural, Railroad, Car, Carriage, and Wagon Works, Planing Mill, Sash, Door and Blind, Bedstead, Cabinet and Furniture Factories.

McBETH, BENTEL & MARGEDANT, Hamilton, O.

* * * * *

INVENTOR'S EXCHANGE, 245 BROADWAY, N. Y., "AM. AGRICULTURIST" BUILDING. TANGIBLE INVENTIONS NEGOTIATED. No goods received unless ordered. B. F. KEMP, Proprietor.

* * * * *

MACHINISTS' TOOLS, at greatly reduced prices. Also, some Woodworth Planers and Second-hand Tools. 97 to 113 R. R. ave., Newark, N. J.

E. & R. J. GOULD, successors to Gould Machine Co.

* * * * *

N. B. PATENTED Articles introduced. Also, State and County Rights sold for Inventors. STONE, PUGH & CO., 55 N. 6th st., Philadelphia.

* * * * *

GOLDEN HILL Seminary for young ladies, Bridgeport, Conn. Miss EMILY NELSON, Principal.

* * * * *

1826 USE THE VEGETABLE 1870
PULMONARY BALSAM.

The old standard remedy for Coughs, Colds, Consumption. "Nothing Better." CUTLER BROS. & Co., Boston.

* * * * *

THE CALVERT IRON ROLLING MILLS are offered at private sale. These mills are situated in the city of Baltimore, and cover 11/2 acres of ground. The Machinery is of the most approved description, for making all sizes of round and square bar iron, from 1/4 in. to 3 in. diameter, and flat bars of all widths, up to 7 inches.

The buildings are ample and commodious.

In addition to the Rolling Mills are two brick buildings (50x125 feet and 40x90 feet), now containing an 80 H. P. Engine, and Spike Machinery, but which could be used for the manufacture of Nails, Horseshoes, or any other branch of heavy hardware.

This property offers an unusual opportunity to capitalists, and will be sold at a reasonable price.

For further description address

MARSHALL P. SMITH, P. O. Box 1158, Baltimore, Md.

* * * * *

BURDON IRON WORKS.--Manufacturers of Pumping Engines for Water Works, High & Low Pressure Engines, Portable Engines and Boilers, of all kinds, Sugar Mills, Screw, Lever, Drop, & Hydraulic Presses, Machinery in general. HUBBARD & WHITTAKER, 102 Front st., Brooklyn.

* * * * *

ENGINES AND MACHINERY FOR SALE, at a great sacrifice. Two new Steam Engines, 12 and 20 horse power; 1 Faribain's Riveting Machine; 1 large Power Shears; 1 ditto Table Punch; 2 ditto Flange Punches; 1 set Power Bending Rolls; together with a large lot of Turning Lathes, Drilling Machines, Machinists' and Smiths' Hand Tools, Pulleys, Hangers, and 6 Fairbanks' Platform Scales. Send for catalogue, or apply at the South Brooklyn Steam Engine Works, cor. Imlay and Summit sts., Brooklyn.

* * * * *

SHINGLE AND HEADING MACHINE--

Law's Patent with Trevor & Co.'s Improvements. The Simplest and Best in use. Also, Shingle, Heading and Stave Jointers, Equalizers, Heading Turners, Planers etc. Address

TREVOR & CO., Lockport, N. Y.

* * * * *

AGENTS WANTED--($225 A MONTH) by the AMERICAN KNITTING MACHINE CO. Boston, Mass., or St. Louis, Mo.

* * * * *

THE _UNITED STATES_ BRICK MACHINE IS THE BEST IN THE WORLD, BECAUSE IT MAKES THE GREATEST NUMBER, THE BEST, and THE CHEAPEST BRICKS.

IT IS THE PERFECTION OF SIMPLICITY.

IT IS DURABLE, AND NOT LIKELY TO GET OUT OF REPAIR.

See SCIENTIFIC AMERICAN, Sept. 17, 1870.

For Descriptive Circular apply to

F. C. WELLS, PRESIDENT, ROOM 13, 98 MADISON ST., CHICAGO.

MACHINES can be seen in operation at the Company's Works, Chicago; at rear 59 Ann st., New York city; and at Novelty Iron Works, corner of Delord and Peter sts., New Orleans.

* * * * *

PREPARED

ASPHALTE ROOFING FELT.

This new prepared production is ready coated, and can be applied on the roof without further trouble. It is easy of application, and does not require any repairs for a long time. It is more durable than some slates, and has been found a suitable substitute for iron or tin roofs. It has a sanded or stony surface, which renders it UNINFLAMMABLE and FIRE-PROOF. Exposed to the most intense fire, and sparks falling upon it, it will not propagate the fire. Under the influence of the sun it will not run, which makes it specially adapted to hot climates. Its easy application and pleasing appearance have made it a favorite roofing material throughout all the Indies and other colonies. Being not cumbrous for transport, it is of invaluable service to settlers and farmers in far remote districts. When used for temporary purposes it may be taken off and applied again to another construction. It replaces common Asphalting on Terraces, Lobbies, Counting-houses, Office Floors, etc.; is a great preservative against dampness and vermin, and equalizes the temperature. It is 32 inches wide, and made in rolls of 25 yards each. Send for circular to

E. H. MARTIN, 70 MAIDEN LANE AND 9 LIBERTY ST., N. Y.

* * * * *

J. J. H. GREGORY'S

SEED CATALOGUE.

My Annual Illustrated Catalogue, containing a list of many new and rare Vegetables, some of which are not found in any other catalogue, and all the standard vegetables of the farm and garden (over one hundred of which I grow on my three seed farms), with a carefully selected list of flower seed, will be sent free to all. All my seed is sold under three warrants:

1st. That all money sent shall reach me.
2d. That all seed ordered shall reach the purchaser.
3d. That my seeds shall be fresh and true to name.

JAMES J. H. GREGORY, Marblehead, Mass.

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THE NEW WILSON UNDER-FEED SHUTTLE SEWING MACHINES!

$25 CHEAPER THAN ANY OTHER!

For Simplicity, Durability and Beauty they stand _UNRIVALLED!_ For STITCHING, HEMMING, TUCKING, FELLING, Quilting, CORDING, BINDING, BRAIDING, GATHERING, Gathering & sewing on gathers, _they are unexcelled!_

For particulars address

Wilson Sewing Machine Co., Cleveland, O., or St. Louis, Mo.

AGENTS WANTED.

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MACHINERY,

NEW AND 2d-HAND.--Send for Circular. CHAS. PLACE & CO., 60 Vesey st., New York.

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MACHINISTS.

Illustrated Catalogue and Price List of all kinds of small Tools and Materials sent free to any address. GOODNOW & WIGHTMAN, 23 Cornhill, Boston, Mass.

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P. BLAISDELL & CO.

MANUFACTURERS of the "BLAISDELL" PATENT DRILL PRESSES, with quick return motion, Agricultural Drills, Improved Engine Lathes, from 12 in. to 28 in. swing, Planers, Gear Cutters, Boring Mills, Hand Lathes, and other first-class Machinists' Tools.

Jackson st., Worcester, Mass.

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PATENT BEDSTEAD FASTENING.

The BEST, CHEAPEST, and STRONGEST FASTENING ever invented.

Rights for States and Territories for sale. Address JOHN DOMINGOS and BENJAMIN ESSIG, Sacramento, Cal.

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BENT, GOODNOW & CO.,

Boston, Mass., Publishers of "PATENT STAR", sell Patent Rights and goods of all kinds. Orders solicited.

AGENTS WANTED.

---> Send stamp for copy.

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TO THE WORKING CLASS.--We are now prepared to furnish all classes with constant employment at home, the whole of the time or for the spare moments. Business new, light and profitable. Persons of either sex easily earn from 50c. to $5 per evening, and a proportional sum by devoting their whole time to the business. Boys and girls earn nearly as much as men. That all who see this notice may send their address, and test the business, we make this unparalleled offer: To such as are not well satisfied, we will send $1 to pay for the trouble of writing. Full particulars, a valuable sample which will do to commence work on, and a copy of _The People's Literary Companion_--one of the largest and best family newspapers published--all sent free by mail. Reader, if you want permanent, profitable work, address