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A Large Ruby

New Guano Island

A Tall Chimney

A Water Wheel Railroad

Frozen Flesh

Peck's Patent Drop Press

Steel Manufacture at Pittsburg

Deep Artesian Well--Heat of the Earth

List of Patent Claims

Granite Dust a Fertilizer

A New Perpetual Motion

The Democratic Tendencies of Science

Receipts of the Paris Exhibition; American Reapers

Compressed Air Engines for City Railroads


Locomotive Telegraph

Wind Flouring Mills for the Prairies

Epidemics and Their Causes

Improvement in Seeding Machinese

Safety Spirit Lamp

Back Numbers Volume 11

Railroad Collision

Extinguishing a Burning Coal Mine

The Quality of American Wool

Report of the Secretary of the Interior

Water Descending and Hot Air Ascending

Award of the Scientific American Prizes

California.--Her Work and Ways

A New and Improved System of Numeration and Measurement

Recent Foreign Inventions

Draining of a Sea

Important Items


Inventors, and Manufacturers

Price of Coal in England

Excessive Division of Labor Injurious

Milk of Wax for the Skin


Extract of Indigo--Salts of Tin

Lake Superior Iron

Oxyd of Tin as a Polishing Powder

A Great Steamship Company

Preparation of Colcothar


  • Letters

    To Correspondents

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