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Features

Improved Turn-Table

New Bread

Magnetism and Diamagnetism

The Leaf-Cutter Bee

By Edward C. H. Day

Harris' Patent Self-Acting Mashing Machine for the use of Brewers

Patent Metallic Post Butt

Improved Weapons in European Warfare

The Law of Compensation

Who Discovered Nitro-Glycerin

The Uses of Soluble Glass

The Action of Water on Lead, Tin, and Copper

Saratoga Springs

Ninety Degrees in the Shade

Compressed Air as a Motor for Subterranean Railways

By J. Dutton Steele

Scientific Intelligence- August 13, 1870

Compressed Air, Ammonia, and Rubber vs. Mule Power

The Mitrailleuse

Answers to Correspondents- August 13, 1870

Applications for the Extension of Patents- August 13, 1870

Official List of Patents- August 13, 1870

Recent American and Foreign Patents- August 13, 1870

Departments

  • Letters

    Correspondence- August 13, 1870

  • Recommended

    New Books and Publications- August 13, 1870

  • Departments

    Business and Personal- August 13, 1870

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August 13, 1870

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