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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

The Law of Compensation

Improved Weapons in European Warfare

Ninety Degrees in the Shade

The Action of Water on Lead, Tin, and Copper

Saratoga Springs

The Uses of Soluble Glass

Who Discovered Nitro-Glycerin

Compressed Air as a Motor for Subterranean Railways

By J. Dutton Steele

Compressed Air, Ammonia, and Rubber vs. Mule Power

Scientific Intelligence- August 13, 1870

Answers to Correspondents- August 13, 1870

Applications for the Extension of Patents- August 13, 1870

The Mitrailleuse

Official List of Patents- August 13, 1870

Recent American and Foreign Patents- August 13, 1870


  • Letters

    Correspondence- August 13, 1870

  • Recommended

    New Books and Publications- August 13, 1870

  • Departments

    Business and Personal- August 13, 1870

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