Chapter 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.

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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.

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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.

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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.