Part 11

JOHN H. CHEEVER, Treas. NEW YORK BELTING & PACKING CO., 37 & 38 Park Row, New York.

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THE STEARNS MANUFACTURING CO., ERIE, PENNSYLVANIA, make a specialty of improved SAW MILL MACHINERY.

Designed in its construction for producing lumber economically and rapidly. Plans and estimates for Mills of any capacity furnished on request. Also build ENGINES, BOILERS, AND MACHINERY IN GENERAL.

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Forster's Rock & Ore Breaker and Combined Crusher and Pulverizer.

_The simplest machine ever devised for the purpose._

Parties who have used it constantly for six years testify that it will do _double_ the work of _any other Crusher_, with one-third the Power, and one-half the expense for keeping in repair. The smaller sizes can be run with Horse Power.

Address TOTTEN & CO., Pittsburgh, Pa.

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The BELMONTYLE OIL

Prevents Rust, Tarnish, etc., on Firearms, Machinery, Tools, Cutlery, Safes, Saws, Skates, Stoves, Hardware, etc., without injury to the polish. In use over 10 years. Highest Testimonials. Samples 50 cents, three for $1.00, sent free of expressage. Send for circular.

BELMONTYLE OIL CO., SOLE MANUFACTURERS, 150 Front Street, New York.

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CARNEGIE BROS & CO UNION IRON MILLS PITTSBURGH PA WROUGHT IRON BEAMS CHANNELS TEES & ANGLES

The attention of Architects, Engineers, and Builders is called to the great decline in prices of wrought STRUCTURAL IRON. It is believed that, were owners fully aware of the small difference in cost which now exists between iron and wood, the former, in many cases, would be adopted, thereby saving _insurance_ and avoiding all risk of _interruption_ to _business_ in consequence of fire. Book of detailed information furnished to Architects, Engineers, and Builders, on application.

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MICROSCOPES, TELESCOPES, FIELD GLASSES, MAGIC LANTERNS, ANEROID BAROMETERS, SPECTROSCOPES, DRAWING INSTRUMENTS, PHILOSOPHICAL & CHEMICAL APPARATUS.

Catalogues as follows sent on application: Part 1, Mathematical Instruments, 162 pp.; Part 2, Optical Instruments, 186 pp.; Part 3, Magic Lanterns, 112 pp.; Part 4, Philosophical and Chemical Apparatus, 160 pp. JAMES W. QUEEN & CO. 924 Chestnut St., Philadelphia, Pa.

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"RELIABLE"

Engines a complete success. Prices still 40 per cent. below those of other makers. Unequaled for efficiency, simplicity, and durability. Prices from $250 for 10 H. P., to $400 for 30 H. P. All complete, with Governor, Pump, and Heater. Address, for circular,

HEALD, SISCO & CO., Baldwinsville, N. Y.

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UNIVERSAL GRINDER.

These Grinders consist of a series of disks with beveled edges locked together on a shaft. They revolve towards each other at different rates of speed. They combine strength and durability. No friction; hence no heat. They will grind all kinds of Grain, also Quartz Rocks, Ores, Gypsum, Brimstone Shavings, Shells, Brick Clay, Cork, Rubber, Bone, Oil Cake, Flax Seed, Cotton Seed, and any number of articles in use by manufacturers and farmers. These Grinders are disposed of on reasonable terms. Send for Illustrated Catalogue with terms. NEWELL & CHAPIN, foot of West 19th Street, New York.

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23 Sizes of Direct, 24 Sizes of Boilers, and the best Indirect Radiation.

Send for circulars.

EUREKA STEAM HEATING CO. ROCHESTER, N. Y.

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OTIS' SAFETY HOISTING Machinery.

OTIS BROS. & CO., No. 348 Broadway, New York.

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JOHN R. WHITLEY & CO.

European Representatives of American Houses, with First-class Agents in the principal industrial and agricultural centers and cities in Europe. London, 7 Poultry, E. C. Paris. 8 Place Vendême. Terms on application. J. R. W. & Co. purchase Paris goods on commission at shippers' discounts.

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ROOTS' NEW IRON BLOWER.

POSITIVE BLAST. IRON REVOLVERS, PERFECTLY BALANCED IS SIMPLER, AND HAS FEWER PARTS THAN ANY OTHER BLOWER.

P. H. & F. M. ROOTS, Manuf'rs, CONNERSVILLE, IND.

S. S. TOWNSEND, Gen. Agt., 6 Cortlandt St., 8 Dey Street, NEW YORK.

WM. COOKE, Selling Agt., 6 Cortlandt Street, NEW YORK.

JAS. BEGGS & CO., Selling Agts., 8 Dey Street, NEW YORK.

SEND FOR PRICED CATALOGUE.

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PROPOSALS FOR MAIL LOCKS.

POST OFFICE DEPARTMENT, WASHINGTON. D. C., October 23, 1880.

SEALED PROPOSALS will be received at this Department, until 12 o'clock, noon, on the 26th day of January, 1881, for furnishing a new kind of mail locks and keys for the sole and exclusive use of the United States through registered mails.

As the public exposure and searching examination necessary to intelligent bidding on any prescribed model of a lock and key would tend to impair, if not entirely destroy, the further utility of such locks and keys for the purposes of the mails, the Postmaster General prescribes no model or sample for bidders, but relies for a selection on the mechanical skill and ingenuity which a fair competition among inventors, hereby invited, may develop in samples submitted by them.

Specifications of the conditions and requirements relating to proposals, samples, contract, etc., as well as forms of proposal, will be furnished on application by letter to the Second Assistant Postmaster General.

No proposal will be considered unless it shall have been submitted in accordance with such specification and forms.

The contracts which may be made will be in conformity to the specifications and the accepted proposal. But the right is, however, reserved to reject any and all of the proposals.

JAS. N. TYNER, Acting Postmaster General.

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SHEPARD'S CELEBRATED $50 Screw Cutting Foot Lathe.

Foot and Power Lathes, Drill Presses, Scrolls, Circular and Band Saws, Saw Attachments, Chucks, Mandrels, Twist Drills, Dogs, Calipers, etc. Send for catalogue of outfits for amateurs or artisans.

H. L. SHEPARD & CO., 331, 333, 335, & 337 West Front Street, Cincinnati, Ohio.

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HUB MACHINERY.--HUB TURNING, HUB MORTISING, and Hub Boring Machines. Send for price list and circulars. DAVID JENKINS, Sheboygan, Wis.

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ROOFING.

For steep or flat roofs. Applied by ordinary workmen at one-third the cost of tin. Circulars and samples free. Agents Wanted. T. NEW, 32 John Street, New York.

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PATENT COLD ROLLED SHAFTING.

The fact that this shafting has 75 per cent. greater strength, a finer finish, and is truer to gauge, than any other in use renders it undoubtedly the most economical. We are also the sole manufacturers of the Celebrated Collins' Pat. Coupling, and furnish Pulleys, Hangers, etc., of the most approved styles. Price list mailed on application to

JONES & LAUGHLINS, Try Street, 2d and 3d Avenues, Pittsburg, Pa.

190 S. Canal Street, Chicago, Ill.

Stocks of this shafting in store and for sale by FULLER, DANA & FITZ, Boston, Mass. Geo. Place Machinery Agency, 121 Chambers St., N. Y.

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Model Engines.

Complete sets of CASTINGS for making small Model steam Engines 1½ in. bore, 3 in. stroke, price,$4; ditto 2 in. bore, 4 in. stroke, price, $10, same style as cut. Gear Wheels and Parts of Models. All kinds of Small Tools and Materials. Catalogue Free. GOODNOW & WIGHTMAN, 176 Washington Street, Boston, Mass.

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SEND FOR THE BEST BAND SAW BLADE in the market to London, Berry & Orton, Phila., Pa.

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COE BRASS MFG. CO. WOLCOTTVILLE CONN. BRASS AND COPPER IN SHEETS. WIRE AND BLANKS MATERIALS FOR METALLIC. AMMUNITION A SPECIALTY.

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MACHINISTS' TOOLS.

New and Improved Patterns. Send for new illustrated catalogue.

Lathes, Planers, Drills, &c.

NEW HAVEN MANUFACTURING CO., New Haven, Conn.

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SKATES AND NOVELTIES. Send for Catalogue. R. SIMPSON, 132 Nassau St., N. Y.

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PORTER MANUF'G CO.

The New Economizer, the only Agricultural Engine with Return Flue Boiler in use. Send for circular to Porter MFG. Co., Limited, Syracuse. N. Y.

G. G. YOUNG, Gen. Agt., 42 Cortland St., New York.

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ADVERTISEMENTS.

Inside Page, each insertion--75 cents a line. Back Page, each insertion--$1.00 a line. (About eight words to a line.)

_Engravings may head advertisements at the same rate per line, by measurement, as the letter press. Advertisements must be received at publication office as early as Thursday morning to appear in next issue._

The publishers of this paper guarantee to advertisers a circulation of not less than 50,000 copies every weekly issue.

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THE WONDERFUL CHRISTMAS "ST. NICHOLAS."

A special Holiday number, designed for boys and girls everywhere, whether regular readers of the magazine or not;--the best, and, by reason of its immense edition, 105,000, the cheapest Christmas book published, Price 30 cents.

A brilliant Holiday cover; superb pictures by the best American artists; a capital acting operetta for children "The Land of Nod," with words and music; a splendid story by Washington Gladden, "A Christmas Dinner with the Man in the Moon," the illustrations of which rival Dore's; "King Arthur and his Knights," by Sidney Lanier; one of Frank R. Stockton's inimitable FAIRY STORIES; the "Treasure Box of Literature," etc., etc.;--in all, thirty-three departments and contributions.

A Grand Holiday Gift-Book of 100 Pages, printed on tinted paper, illustrated with scores of charming pictures, for only 30 cents. Ask for the Christmas (December) St. Nicholas. Four editions of last year's Holiday number were demanded. For sale everywhere. Subscription price, $3.00 per year.

Scribner & Co., 743 Broadway, N. Y.

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$100 PRESENT! For a Machine that will Saw as Fast and Easy as this one.

This is the King of Saw Machines. It saws off a 2 foot log in 2 minutes. 20,000 in use. The cheapest machine made, and fully warranted. Circular free. United States Manufacturing Co., Chicago, Ill.

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THE NEW YORK BELTING AND PACKING COMPANY

LOOK FOR OUR STAMP on the goods whenever you buy BELTING, HOSE, OR PACKING.

37 & 38 PARK ROW, NEW YORK.

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Watchman's Improved Time Detector, with Safety Lock Attachment, Patented 1875-6-7. Beware of Infringements. This Instrument is supplied with 12 keys for 12 different stations. Invaluable for all concerns employing night watchmen. Send for circulars to E. IMHAUSER, P. O. Box 2875. 212 Broadway, New York.

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Mill Stones and Corn Mills.

We make Burr Millstones, Portable Mills, Smut Machines, Packers, Mill Picks, Water Wheels, Pulleys, and Gearing specially adapted to Flour Mills. Send for catalogue.

J. T. NOYE & SONS, Buffalo, N. Y.

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THE NEW PULSOMETER Is more economical in points of original cost, expense for repairs and running expenses, than any other Steam Pump in the World.

Simple and compact, with no machinery whatever to oil, or get out of order, it stands at the head of all means of elevating water or other liquids by steam. _It needs no skilled labor to look after it._

Send for book giving full description, reduced prices and many letters of commendation from leading manufacturers and others throughout the country who are using them.

Pulsometer Steam Pump Co., Sole Owners of Hall's Patents in the U. S., 131,515 to 131,543, both inclusive, and the NEW PULSOMETER, Office, No. 83 John St., P.O. Box No. 1533. New York City.

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Pictet Artificial Ice Co., Limited, P.O. Box 3083 142 Greenwich St., New York. Guaranteed to be the most _efficient_ and _economical_ of all existing Ice and Cold Air Machines.

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H.W. JOHNS' ASBESTOS LIQUID PAINTS, ROOFING, Steam Pipe & Boiler Coverings, Steam Packing, Mill Board, Sheathing, Fire Proof Coatings, &c.

Send for Descriptive Price List.

H. W. JOHNS M'F'G CO. 87 MAIDEN LANE, N. Y.

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$66 a week in your own town. Terms and $5 outfit free. Address H. Hallett & Co., Portland, Me.

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The George Place Machinery Agency

Machinery of Every Description.

121 Chambers and 103 Beade Streets, New York.

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EMERY WHEELS and GRINDING MACHINES.

THE TANITE CO., Stroudsburg, Monroe Comity, Pa.

Orders may be directed to us at any of the following addresses, at each of which we carry a stock:

New York, 14 Dey Street. Chicago, 152 and 154 Lake St. St. Louis, 209 North Third St. St. Louis, 811 to 819 North Second St. Cincinnati. 212 West Second St. Louisville, 427 West Main St. Indianapolis, Corner Maryland and Delaware Sts. New Orleans, 26 Union St. San Francisco, 2 and 4 California St. Philadelphia, 11 North Sixth Street. Boston, 21 Doane st. Portland, Oregon, 43 Front St. London. Eng., 9 St. Andrews St., Holborn Viaduct, E. C. Liverpool, Eng., 42 The Temple, Dale St. Sydney, N. S. W., 11 Pitt St.

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_Before ordering engraving of any kind, send to us for estimates and samples. We have the largest engraving establishment in the world, and the best facilities for doing work of the best quality, quickly and cheaply._

_PHOTO-ENGRAVING CO. 67 & 69 Park Place, New York._

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HARTFORD STEAM BOILER

Inspection & Insurance

COMPANY

W. B. FRANKLIN, V. Pres't, J. M. ALLEN, Pres't. J. B. PIERCE, Sec'y.

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COLUMBIA BICYCLE.

The Bicycle has proved itself to be a permanent, practical road vehicle, and the number in daily use is rapidly increasing. Professional and business men, seekers after health or pleasure, all join in bearing witness to its merits. Send 3 cent stamp for catalogue with price list and full information.

THE POPE M'F'G CO., 89 Summer Street, Boston, Mass.

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AGENTS CAN MAKE $5,000.00

BY SECURING THE MANUFACTURERS' CABINET.

By employing Agents for 500 Manufacturers. By manufacturing rapid selling articles. By getting, through means of the Cabinet, the best agencies in the world.

Address J. B. CHAPMAN, 12 West St., Madison, Ind.

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TELEPHONE and Electrical Supplies Send for Catalogue.

C. E. JONES & BRO., CINCINNATI, O.

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Steam Fitters' & Plumbers' Supplies.

STURTEVANTS' FAN BLOWERS.

ALBERT BRIDGES, 46 Cortlandt Street, New York.

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PUMPING, PISTON ROD, PLUNGER & WELL

THE WATSON PUMP, FOR ARTESIAN, OR DEEP WELL

ROD IN DIRECT LINE MACHINE SIMPLE, EFFICIENT.

JAMES WATSON 1608 S. FRONT ST. PHILA.

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BOILER COVERINGS.

Plastic Cement and Hair Felt, with or without the Patent "AIR SPACE" Method.

ASBESTOS MATERIALS.

Made from pure Italian Asbestos in fiber mill board and round packing. THE CHALMERS-SPENCE CO., 40 John Street, and Foot of E. 9th Street, New York.

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Perfectly Smooth Thoroughly Seasoned CUT THIN LUMBER!!

Manufactured by our Patent Board Cutting Machines and Seasoning Presses.

Pronounced the only Perfect Cut Lumber!!

MAHOGANY, Rosewood, Satinwood, Walnut, Ash, Red Cedar, Cherry, Oak, Poplar, Maple, Holly, French Walnut, etc., etc.. in Logs, Planks, Boards, and Veneers.

Send for catalogue and price lists.

GEO. W. READ & CO., 186 to 200 Lewis St. foot 5th and 6th Sts., New York.

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SNOW'S BEST Water Wheel Governor,

MANUFACTURED BY COHOES IRON FOUNDRY AND MACHINE, CO., COHOES, N.Y.

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$55.66 Agents' profit per week. Will prove it or forfeit $500.00. Outfit and Samples worth $5.00 free. Address E. G. RIDEOUT & CO., 10 Barclay Street, New York.

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Steel Castings

From ¼ to 15,000 lb. weight, true to pattern, of unequaled strength, toughness, and durability. 15,000 Crank Shafts and 10,000 Gear Wheels of this steel now running prove its superiority over other Steel Castings. Send for circular and price list.

Chester Steel Castings Co., 407 Library St., Phila, Pa.

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Pyrometers.

For showing heat of Ovens, Hot Blast Pipes, Boiler Flues Superheated Steam, Oil Stills, etc.

HENRY W. BULKLEY, Sole Manufacturer, 149 Broadway, N.Y.

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WM. A. HARRIS PROVIDENCE, R. J. (PARK STREET), Six minutes walk West from station.

Original and Only builder of the HARRIS-CORLISS ENGINE With Harris' Patented Improvements, from 10 to 1,000 H. P.

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SHAFTS PULLEYS HANGERS

At Low Prices. Large Assorted Stock. A. & F. BROWN, 57-61 Lewis St., New York.

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THE BAKER BLOWER, Centennial Judges Report.

"Good Design and Material. Very efficient in action. With the special advantages that they can be connected for motion directly with engine without the use of gearing or belting."

SEND FOR CATALOGUE.

WILBRAHAM BROS. No. 2518 Frankford Avenue, PHILADELPHIA, PA.

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MICROSCOPES, OPERA GLASSES, SPY Glasses, Spectacles, Thermometers, Barometers, Compasses. R. & J. BECK,

Manufacturing Opticians. Philadelphia, Pa. Send for Illustrated Priced Catalogue.

* * * * *

The Oldest YANKEE NOTION HOUSE In the World.

HOWARD BROTHERS & READ, Successors to Howard, Sanger & Co., OWNERS OF THE HOWARD MANUFACTURING CO., MANUFACTURE AND INTRODUCE PATENTED NOVELTIES.

THE ONLY Real Pocket Scale IN THE MARKET.

MADE OF METAL, Heavily Nickel Plated, COMPACT, STRONG, DURABLE.

Can be carried in the Vest Pocket.

Each one warranted absolutely accurate.

Weighs up to 8 lbs.

PRICE 25 CENTS.

Sample by mail on receipt of price.

A liberal discount to the trade.

No. 1--"Post Office," weighs to 8 ozs. " 2--"Pocket," weighs to 8 lbs.

Howard Manufacturing Co., Box 2295, New York.

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BOGARDUS' PATENT UNIVERSAL ECCENTRIC MILLS--For grinding Bones, Ores, Sand, Old Crucibles, Fire Clay, Guanos, Oil Cake, Feed, Corn, Corn and Cob, Tobacco, Snuff, Sugar, Salts, Roots, Spices, Coffee, Cocoanut, Flaxseed, Asbestos, Mica etc., and whatever cannot be ground by other mills, Also for Paints, Printers' Inks, Paste Blacking, etc.

JOHN W. THOMSON, successor to JAMES BOGARDUS, corner of White and Elm Sts., New York.

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THE New York Ice Machine Company, 21 Courtland St., New York, Booms 54, 55. LOW PRESSURE BINARY ABSORPTION SYSTEM Machines Making ICE AND COLD AIR. Low Pressure when running. No pressure at rest. Machines guaranteed by C. H. Delamater & Co.

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Our new Stylographic Pen (just patented), having the duplex interchangeable point section, is the very latest improvement. THE STYLOGRAPHIC PEN CO., Room 13, 169 Broadway, New York. Send for circular.

* * * * *

KNABE PIANOFORTES.

Unequaled in TONE, TOUCH, WORKMANSHIP, & DURABILITY.

Warerooms 112 Fifth Avenue. New York. 204 & 206 W. Baltimore St., Baltimore.

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NON-CONDUCTOR COVERINGS, _FOR STEAM BOILERS AND PIPES._

THE RAYMOND M'F'G CO., 642 West 52d St., 108 Liberty St., New York.

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POWER SHEARS.

STILES & PARKER PRESS CO., Middletown, Conn.

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DO YOUR OWN PRINTING $3

PRESS prints &c. (Self-inker $4) Larger sizes for larger work. For old or young. Great money saver. A paying business anywhere for all or spare time. Send two stamps for a catalogue of all sizes. Presses, Type, Cards, Paper &c., to the Manufacturers KELSEY & CO., Meriden, Conn.

* * * * *

The Asbestos Packing Co., Miners and Manufacturers of Asbestos, BOSTON, MASS., OFFER FOR SALE:

PATENTED ASBESTOS ROPE PACKING, " " LOOSE " " " JOURNAL " " " WICK " " " MILL BOARD, " " SHEATHING PAPER, " " FLOORING FELT, " " CLOTH.

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PROSPECTUS OF THE Scientific American FOR 1881.

The Most Popular Scientific Paper in the World.

VOLUME XLIV. NEW SERIES.

Only $3.20 a Year, including postage. Weekly, 52 Numbers a Year.

This widely circulated and splendidly illustrated paper is published weekly. Every number contains sixteen pages of useful information, and a large number of original engravings of new inventions and discoveries, representing Engineering Works, Steam Machinery, New Inventions, Novelties in Mechanics, Manufactures, Chemistry, Electricity, Telegraphy, Photography, Architecture, Agriculture, Horticulture, Natural History, etc.

All Classes of Readers find in The Scientific American a popular _resume_ of the best scientific information of the day; and it is the aim of the publishers to present it in an attractive form, avoiding as much as possible abstruse terms. To every intelligent mind, this journal affords a constant supply of instructive reading. It is promotive of knowledge and progress in every community where it circulates.

Terms of Subscription.--One copy of The Scientific American will be sent for _one year_--52 numbers--postage prepaid, to any subscriber in the United States or Canada, on receipt of three dollars and twenty cents by the publishers; six months, $1.60; three months, $1.00.

Clubs.--One extra copy of The Scientific American will be supplied gratis _for every club of five subscribers_ at $3.20 each; additional copies at same proportionate rate.

One copy of The Scientific American and one copy of The Scientific American Supplement will be sent for one year, postage prepaid, to any subscriber in the United States or Canada, on receipt of seven dollars by the publishers.

The safest way to remit is by Postal Order, Draft, or Express. Money carefully placed inside of envelopes, securely sealed, and correctly addressed, seldom goes astray, but is at the sender's risk. Address all letters and make all orders, drafts, etc., payable to

MUNN & CO., 37 Park Row, New York.

To Foreign Subscribers.--Under the facilities of the Postal Union, the Scientific American is now sent by post direct from New York, with regularity, to subscribers in Great Britain, India, Australia, and all other British colonies; to France, Austria, Belgium, Germany, Russia, and all other European States; Japan, Brazil, Mexico, and all States of Central and South America. Terms, when sent to foreign countries, Canada excepted, $4, gold, for Scientific American, 1 year; $9, gold, for both Scientific American and Supplement for 1 year. This includes postage, which we pay. Remit by postal order or draft to order of Munn & Co., 37 Park Row, New York.

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THE "Scientific American" is printed with CHAS. ENEU JOHNSON & CO.'S INK. Tenth and Lombard Sts., Philadelphia, and 50 Gold St. New York.