AMERICAN AND FOREIGN PATENT J\ SOLICITORS.—Messrs. MUNN CO., Proprietors of tho SCLEXTIFIC AMRUICAN, continuo to procure patents for inventors in the United States and all foreign countries on the Illost liberal terms. Onr l^xperieIlce i8S of twelve years' standing, and our fiu:ilities are un-equaled by any other agencyin the world. The long experience we have had in preparing specifications and drawings has rendered us perfectly conversant with the mode of doing business at the United Stabes Patent Office, and with most of thc inventlOns which have been patented. Information concerning the patentability o f inventions is freely given, without charge, on sending a model or drawing and description to this office. Consultation may be had with the firm, between nine and fonr o'clock, daily, at their principal oflice. 128 Ii'uIton street, New York. 'Ve have lately established a Branch Agency on tlle corner ot F. and Seventh streets, Washington (opposite the United States Patent Office). This office is under the general superintendence of one of the firm, and is in daily communication with the Principal Office in New York, and personal attention will be given at the Patent Office to all Buch cases as may require it. We aTe very extensive1y engaged in the preparation and secnring of patents in the varions European countries. For the transaction of this business we have offices at NOB. 66 Chancery Lane, London; 29 Boulevard St Martin, Paris; and 26 Rue des Eperonniers, Brussels. We think we may safety aay that three-fourths of all the European patents sccuredto American citizens are procured through our Agency. Circulars of information concerning the proper course to be pursued in obtaining patents through our Agency: the requirements of the Patent Office, c. may be haa gratis upon application at the plincipal office or either of the branches. t)ommuniations and remittances should be addressed to MUNN COMPANY, No._ 128 Fulton street, New York. me annexed letter from e late Commissioner of Patents we commend to the perusal of all persons interestcd in obtaining patents :— MESSRS. MU'M CO.—I take pleasure in stating that while I held the oflice of Commissioner of Patents, MORE THAN ONE-FOURTH OF AT.L THE BUSINESS OF THE OIRLRLCE came through your hands. I have nO donbt that the public confidence thus indicated has been fully deserved, as I have always obRerved, in all your interCOllrse with the Oflice, a marked degree of promptness, skill, and fidelity to tho interests ofyonr employers. Yours, very truly, CIIAS. MASON. SELF-ACTING WOOD-TUKNING LATHES —A. Warth'a patent having "been three years in practical operation, and grcatly improved, is now the most perfect, simple. prRctical Jathe in use, giving geIleral satisfaction. One boy, in most kinds of work, can operntc two lathes, and accomplish the work of four men in the best manner. Adrlress CARPENTEU PL ASS, 479 First avenue, New York City, sole manufacturers ; or for county or State rights A. WARTH, 23 Chambers street, New York City. Also a general assortment of machinists' toolH on hand. Circulars sent on application. MICROSCOPES I MICROSCOPES : MICROSCOPES.—No. 101 Microscope, brass body six inches high, 1 lens, power 35 diameter—$2. No. 102 Microscope, brass body. 7% inches high, power SOX 60—$3. No. 103 Microscope, brassbody, 1% inches high, 3 lens, 20, 60XIOO diameter—$5. Compound Microscope No. 101, price $2, packed in mahogany case, will show portions of insects, some of the animalculae in stagnant water, c. Can be sent to all parts by express or by mail, postage $1. ^fcALLISTER BROTHER, 728 Chestnut st., Philadelplib. McAllister's priced and descriptive furnished gratiS. and sent by mail free of charge. Our catalogne (108 pages) contains over 200 illustrations. THE NEW YORK ENGINEER, MACHIN-ists' and Iron Founders' ENJournal, GINEERis published by JOHN HILLYER, 9 Spruce street, New York. ONE DOLLAR per annum. DISTILLERS* AND HOG FEEDERS' ATTENTION—Robinson's Calimalarity. The subscribe,r win furnish a receipt to distillers and hog feeders that will keep hogs healthy, and prevent them from eating the pens, and will change the character of their excrement in two days after they are put into the pens. Terms made known by applying to the subscriber. We have had 2,000 head of hogs in our pens for the last three months, and have not had a single sick hog, and they manifest no disposition to eat or destroy their pens. The articles composing the Calimalarity are abundant and cheap, and is fed to the animals in separate troughs from the slop. All persons interested in the above are invited to visit our pens, and examine for themselves. Address L. N. vROBINSON, (care ot Robinson, Cheesman Co.,) Scioto Mills, Portsmouth, Sciotoco., Ohio. ANDREWS' CENTRIFUGAL FORCE AND 1\- Suction Pamps—Illustrated in Sor. AM., October 24, 1857. Sizes, from 60 to 4.000 gallons per minute. Larger sizes made to order. Pump, sand, gravel, coal, paper pulp, c., and for simpliCity, durability, and economy of power, are snperior to any pump made. WILLIAM D. ANDREWS, No. 414 Water st., New York. NEW ORLEANS—VOSE WEST, Commission Merchants for the saleof Machinery, Agricultural Implements, C., New Orleans. Refer to W. P. Converse Co., 42 Pine street, Nmv York. WATER WHEELS-VANDEWATER'S IM-proved Jonval Turbine VANDEWWater Wheel is now manufactured in the best manner by MASON BLAKENEY, Springfield, Ohio. Also Otstot's Saw Gnmmer. Address as above. KA. COEN—ENGINEER AND CONTRACTOR for the erection of Coal Gas Works. Plans and specifications furnished and works erected for cities, villages, factories, c. Gas works altered and repaired. Western office, Jackson, Mich. ReSidence, Rondout, Ulster county, N. Y. Eastern office, Carmine and Bedford sts., New York. inc CiCiCi WILL BUY THE PATENT $5 ,000 right of an improved machine for Cutting Glazier's Points, Shoe Nails, c. ; warranted to cut 6,000 points per minute. Address J. G. BAKER, New Brunswick, N. J. ECCENTRIC SCREW AND GRIPPING WRENCH—Hyde's patent—for sale by all hardware stores. Proprietors, GRAY BHOTlIERS, New York City. EVERY MILLWRKiHT, ALT. MILL-OWNERS, and those interested in hydrodynamics. should become acquainted with the merits and principles of the improved Fourneyron Turbine Water Wheel, or the "Universal Turbincl" a wheel the most economical in the use of water, and giving the highest percentage. with a partially raised gate, of any yet discovered. It gives from 75 to 97 per cent of power, according to the size of wheel and head employed. For iuformation address S. K. BALD'VIN, I,aconia, N. H. N. B.—Fol' low falls of one, two, or three feet, also forany faI!. it will surpass all others. BALLOONS FOR THE FOURTH OFJULY —Illuminated and tri-colored—a great amusement. Size from 6 to 20 feet circumference. Price from 50 cents to $3 each. Address I. S. CLOlTGH, Sole Agent, No. 2;H Pearl street, Nuw York. SPECIAL EXTRAORDINARY OFFER-The great fifty cent Pictorial Monthly. The United States Journal commences its tenth volume with the July nmulwl'; ancl determined, regardless of any outlay, to i;ive it an immediate intro.dnction into eyery neighborhood, we make the followmg specHtl offer;f To any person who willsend ns two subs.criptions ($1), we will present either a beuntiful coPy of Fleetwood' s Life of Christ. containing about 500 pageH, elegantly bonnd, and profusely illustrated, or we will present a splendid copy of Livingston's Travels in Africa, superbly bound and illustrated; or a copy of the magnificent steel-plate engraving, ' Signing of the Death Warrant of Lady Jane Grey." The postage on the books is 24 cents euch, and on the engraving 12 cents, which must accompany the order. If anybody is fearful that the above offer will not be carried out, they can deposit the amount and postage with their postmaster. to be forwarded by him on receipt of the premium and first number of the paper. We will also send our catalogue of rich offers. J. M. F;MERSON CO., 406 Broadway, New York. WOODWORTH PLANING MACHINES, Mortising, Tenoning, and Sash Machines, and a full assortment of wood-working machinery, at creatly reduced prices. Address CHARLES II. SMITH, 135 North Third st., Philadelphia, Pa. SECOND-HAND MACHINERY AT VERY k5 low prices for cash.—Steam Engines, Slide Lathes, Planing Machines, Drills, Slotting Machines, c.; also a variety of Mortising. Tenoning, and Sash Machines, c., all warranted m good running order. Address CHARLES G. WILLCOX, 87 North Third st., Philadelphia, Pa. SLIDE LATHES, IRON PLANERS, UP-right Drills, Slotting and Boring Machines, Universal Chucks, and a large assortment of machinists' tools, at greatly reduced prices. Address CHARLES H. SMITH, 135 North Third st., Philadelphia, Pa. FOR SALE AT A BARGAIN—ONE NEW 13 ft. Iron Planer, weight 10,000 lbs. One new 18 ft. Engine Lathe, swing 30 inches. One second-hand Engine Lathe, swing. 21 inches. One Uvright Drill, six Shaft Straighteners, six Bolt Headers. For particulars address or inquire of 'VU. T. SCRANTON, New Haven, Conn. SD. BAUNETT, MALLEABLE AND GREY ? Iron Foundry, Hamilton, corner of McWhorter st., Newark, N. J. Orders promptly attended to. REED'S PATENT PORTABLE AND STATIONARY STEAM ENGINES, uneqimled ibrsim-plicity, durability, and economy. Birkbeck's improved Steam Pumps, Portable Steam Saw and Grist Mills ; second-hand engines and boilers. Most improved machinery of all kinds, furnished by JOlIN A. HEED, No. 172 Broadway, corner of Maiden Lane, New York City. BELTING AND PACKING— Nia^im Falla Paper Manufacturing Co., Niagara Falls, April 20, 1858. United States Gutta Percha Co. : We duly received the Gutta Percha llelting ordered from you, and after giving it a thorough test the past winter, on our heaviest engines, constantly exposed to water, ice nnd oil, and making 140 to 160 revolutions per minute; and again on two of our largest H Gwynne Pumps," making from 600 to 700 revolutions per minute, they have given us entire satisfaction, and. we think it decidedly the best belting we ever used, and YOll may look for our future orders a8 required. S. PETTIBONE, Treasurerand Superintendent. For sale by the UNITED STATES VULCANIZED GUTTA PERCHA CO., No. 60 Liberty street, New-York. ROBINSON'8 CORN PLANTER—Patented May 18th—plants in hill?, and in straight parallel rmvs. two or three rows at a time. Rights for sale by DURGIN CO., over Gerrish Market, Boston, Mass. SAMUEL MCELROY, CIVIL ENGINEER— Late U. S. Naval and Civil Engineer. Special attention paid to water-works with pumping power. Address HEngineer's Office," 'Yater-works, Brooklyn, Long I,land. FIFTH EDITION—CATALOGUE CONTAIN-ing 250 illustrations of Mathematical, Optical and Philosophical Instruments, with attachment of a large sheet representing the Swiss instruments in their actnal size and shape, will be delivered, on application, to all parts of the United States, by sending 12 cents in postage stampp. C. T. AMSLER, No. 635 StaChestnut st, Philadelphia. WOOnWORTH PLANEHS-IRON FRAMES to plane 18 to 24 inches wide—at $90 to $110. For sale by S. C. HILLS, 12 Platt street New York. HARRISON'S G JUST MILLS—20, 30, 36 AND 48 inches diameter, at $100, $200, $300 and $400, with all the modern improvements. Also, Portable and Stationary Steam Engines of all sizes, suitable for said Mill3. Also, Bolters, Elevators, Belting, c,, c. Apply to S. C. HILLS, 12 Tlatt st, New York. STEAM ENGINES, STEAM BOILERS, Steam Pumps. SawandGriBt Mills, Marble Mills, Rice Mills, Quartz .Mills for gold quartz, Sugar Mills, Water Wheels, Shaftin and Pulleys. The largest assortment of the above m the country, kept constantly on hand by WM. BURDON, 102 Front street, Brooklyn, HARRISON*S 30 INCH GRAIN MILLS— Latest Patent—A supply constantly on hand. Price $200. Address New Haven Manufacturing Co., New Haven, Conn. THE WORKS OF THE AUBIN GAS CO., (General Office, No. 44 State st., Albany, N. Y.,) as now perfected, are adapted to all materials and 10. calities, and are m successful operation in villages, factories, and private dwellings. For full information a3 to cost, probable income of public works, c., apply as above. For plans, c., see SCIENTIFIC AMERIOAN of March 13th. SECOND-HAND MACHINISTS' TOOXSk5 Consisting of20 Engine Lathee, 9 Iron Planers, 4 Upright Drills, Hand Lathes, Chuck Lathe, Gear Cutters and Vices, all in good order, nnd for sale low for cash. For particulars, address FRANKLIN SKINNER, 14 Whitney avenue, New Haven. Conn. MACHINE BELTING, STEAM PACKING, ENGINE HOSE.—The superiority of these artieles, manufactured of vulcanized rubber, is established. Every belt will be warranted superior to leather, at one-third less price. The Steam Packing is made in every variety, and warranted to stand 300 dege. of heat. tfhe hose never needs oiling, and is warranted to stand any required pressure ; together with all varieties of rubber adapted to mechanical purposes. Directions, prices, c., can be obtnined by mail or otherwise, at our w"reh@use. NEW YORK BELTING AND PACKING COMPANY. JOHN II. CHEEVER, Tre3.surer, No. 6 Dey street, New York. PECK'S PATENT DKOP PRESS —FOR Jewelers, tin and copper DROPPworkers, REgun SSand -other forgings, c., manutactured by thc llatentec, MILO PECK CO., New Haven, Coun. These machines have no rival.—[Scientific American. WHEELER WILSONS SEWING MATT CHINES, 343 Broadway, New York, received the highest premiums awarded in 1857 by the American Institute, New York; Maryland Institute, Baltimore ; and at the Maine, Connecticut, Illinois, and Michigan State Fairs. Send for a circular cont!lining editorial and scientific opinions, testimonials from persous of the highest social position, c. NEW HA TEN MANUFACTURING CO__ Machinists'Tools, Iron Planers, Engine andHand Lathes, Brills, Bolt Cutters, Gear Cutters, Chucks, c. on hand and finishing. These tools are of sUllerior quality, and are for sale low for cash or approved paper. For cuts giving full description and prices, address " New Haven Manufacturing Co., New Haven, Conn.1 PHILADELPHIA RIVET WORK S-MANU-f acturcre of the celebrated P brand. Boiler, tankd and gasometer rivets, of every diameter, length, and head. PHILLIPS ALLEN. ^LARK'S REGULATOR-FROM TEN TO V^ twenty-five per cent saving in fuel is guaranteed in the use of Clark's Patent Steam and Fire Regulators ; besides giving the most perfect regularity of power at any desired pressure, and DO fear of explosions. Send for circular at 229 Broadway, New York City. E. R. PRATT, Secretary. CIRCULARS WITH CUTS, iLLtJSTATING steam engines and machinery for making lumber, shingles, staves, liea*i:"ug chairs, bedsteads, and wheat-cleaning machinery, bran dusters, c., sent for a postage stamp, by applying to L. A. SPALDING, Lock-port, N. Y. T^NGRAVING ON WOOD AND MECHANI-Ei CAL DRAWING, by RICHARD TEN EYCK, Jr., 128 Fulton street, New York, Engraver to the Scientific American. PAGE'S PATENT PORTABLE CIRCULAR SAW MILL, and Portable Steam Engines asd Boilers mounted on substantial wheels, ready to saw lumber, thrash wheat or gin cotton. Our Mills will saw from 2,000 to 10,000 feet per day. Address GEO. PAGE CO., Baltimore, Md. TITOODWORTH PLANING MACHINES.TT Having over$40,000worth now completed, I will sejl, from this time henceforth, at a very reduced price, and um ready to construct any sizes not on hand at short notice. JOHN H. LESTER, 57 Pearl st., Brooklyn, Long Island. TNDUSTRIAL MUSEUM— CONTRIBUTIONS X ot new and. valuable machines, merchandize, and specimens of fine urt are most respectfully solicited at No. 5 \Vashington street, Boston, Mass. I. S. RICHARDSON. OIL! Oil,! OIL!—FOR RAILROADS, STEAMERS, and for machinery and burning. Peaee'a Improved Machinery and Burning Oil will save fifty per cent., and will not gum. This oil possesses qualities vitaIiy essential for lubricating and burning, and found in no other oil. It is offered to the public upon the most 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. 'Fha Scientific American, after several tests, pronounced it " superior to any other they have ever used for machinery.It For sale onll py. the inventor and manufacturer, P. S. PEASE, 61 Main at, Buffalo, N. Y. N. B—Reliable orders filled for any part of the United States and Europe. "17" AIL'S SPEEDWELL IRON WORKS, T MorristowD, N. J., manufacture Craig's Patent Double-acting Balance Valve Oscillating Steam Engines both stationary and portable, Knowles' Patent Muley, Portab1e, Gang and Re-sawing Mills, Sugar and Chinese Cane Mills and Sugar Pans, Grist Mills, Mill Irons. Rich's Water-wheels, Forgings and Castings. Orders for the above, and all descriptions of labor-saving ma-chinerv will receive prompt attention. JOlIN H. LIDGERWOOD CO., No. 9 Gold street, New York. CORLISS' PATENT STEAM ENGINES— About 250, most of them from 40 to 400 horse power1 are now in operation. On application, pamphlets wil be sent (by mail), containing statements of responsible manufacturing companies where these engines have been furnished, for tJu' wiving of fuel, in periods varying from 2% to 5 yearH. Boilers, shafting, and gearing. CORLISS STEAM ENGINE CO., Providence, R. I. PATENT OFFICE MODELS CAREFULLY \ mad eon scientific principles, fit low prices, byH. , SHLARBAUM CO., 300 Broadway, New York. Ref- J erences at the office of this Paper.