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Features

Improved Screw Steering Apparatus, The Siphon-Recorder for Submarine Cables, and more

The Artisan in France, Belgium, and Holland

The Orthopters--The Grasshoppers and their Allies

By Edward C. H. Day

The Strike of the "Raffineurs" at La Villette, France

Scientific and Practical Facts and Items

By Septimus Piesse

Important to Manufacturers and Importers

The Sale of Explosive Illuminating Fluids

The Influence of War Upon Inventions

Paper Money vs. Gold

Spontaneous Generation

Visit to the Delamater Iron Works, New York

Scientific Intelligence- August 20, 1870

The Orange Judd Hall of Natural Science

Answers to Correspondents- August 20, 1870

Applications for the Extension of Patents- August 20, 1870

Official List of Patents- August 20, 1870

Recent American and Foreign Patents- August 20, 1870

Departments

  • Letters

    Correspondence- August 20, 1870

  • Departments

    Bussiness and Personal- August 20, 1870

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August 20, 1870

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