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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


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



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  • Notes and Queries

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April 15, 1865

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