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Features

Improved Water Motor, A Strong Room, and more

Facts About Petroleum

Farmers' Club

Polytechnic Association of the American Institute

Miscellaneous Summary

Camp Nelson Water Works

Saunders's Improved Bobbin

Satuders's Friction Weight for Beams

Knowing Too Much

Value of Coal Ashes

The Great Victory

Strikes

Microscopic Objects

Recent American Patents

Patent Claims

Notice to Subscribers

To Our Readers

Special Notice to Inventors

Rates of Advertising

A Valuable Work for Inventors Patentees and Manufacturers

The Cheapest Mode of Introducing Inventions

Prospectus

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April 15, 1865

See the World from a Different Perspective

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