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Great Guns

Improved Turret

The Most Important American Discoveries and Inventions

Iron-Clad Ships of War

J. Scott Russell's Report on Gun-Cotton

The World's Indebtedness to Science

Godwin's Patent Lubricator

Polytechnic Association of the American Institute

Miscellaneous Summary

Recent American Patents

Navy Committee to Examine Inventions

Distilled Water for High Pressure Engines

Wines, Almonds, and Olives in California

The Laws of Expansion

Submarine Firing--Are Armor-Plates Worthless?

Patent Claims

The Whiskey Controversy

Patents Granted for Seventeen Years!

To Our Readers

Rates of Advertising

A Valuable Work for Inventors Patentees and Manufacturers

The Cheapest Mode of Introducing Inventions

Improved Hand-stamp, The Earth's Temperature in Palaeozoic Times


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February 27, 1864

20% Sitewide for President's Day