Chapter L: F. Standish & Co.,

SCREW MANUFACTURERS, Builders of Small Machinery and Fine Tools. 26 Artisan St., New Haven, Ct.

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Emery Wheel.

NEW YORK BELTING AND PACKING COMP'Y.

The Oldest and Largest Manufacturers of the Original

SOLID VULCANITE EMERY WHEELS.

All other kinds Imitations and Inferior. Our name is stamped in full upon all our standard BELTING, PACKING, and HOSE.

Address NEW YORK BELTING AND PACKING CO.,
NEW YORK.

JOHN H. CHEEVER, Treas.

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THE SEVENTH CINCINNATI INDUSTRIAL EXPOSITION

Opens for the reception of goods AUGUST 20TH.

Opens to the public SEPTEMBER 10TH, and continues open until OCTOBER 11TH, in the

NEW PERMANENT BUILDINGS ERECTED FOR THE PURPOSE.

Machinery Tested and Fully Reported upon.

Send for Rules and Premium Lists after April 1.

H. McCOLLUM, Sec'y.

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THE FORSTER-FIRMIN GOLD AND SILVER AMALGAMATING COMP'Y

of Norristown, Pa., will grant state rights or licenses or easy terms. This system works up to assay, and recovers the mercury rapidly.

Apply as above.

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THOMAS'S CONCENTRATED DYE Stuffs. (138 Recipes SENT GRATIS.) (See SCIENTIFIC AMERICAN SUPPLEMENT, March 15, '79.) Address

N. SPENCER THOMAS, Elmira, N. Y.

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BAKER ROTARY PRESSURE BLOWER. (FORCED BLAST)

Warranted superior to any other.

WILBRAHAM BROS. 2318 Frankford Ave. PHILADELPHIA

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"THE 1876 INJECTOR."

Simple, Durable, and Reliable. Requires no special valves. Send for illustrated circular.

WM. SELLERS & CO., Phila.

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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, Pittsburgh, Pa. 190 S. Canal Street, Chicago, Ill., and Milwaukee. Wis.

[Right index] 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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VEGETABLE AND FLOWER SEEDS

WE SELL EVERYTHING FOR THE GARDEN

Descriptive Catalogues of 175 pages sent Free

PETER HENDERSON & CO. _35 Cortlandt St., New York._ FLOWER AND FRUIT PLANTS

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