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Features

New Life-Saving Inventions

Wanted-Torpedo Defences

The Human Machine and its Fuel

Torpedoes

By G. Gakuma

Improved Friction Hoisting Engines

The Electric Candle

The New Godefroy Burner

Two New Utilizations of Paper Pulp

Grant's Improved Horse Hay Fork

Projection of Interference Colors from Soap Films

By Henry Morton

Astronomical Notes

Professor R. H. Thurston's Autographic Testing Machine

A Wonderful Watch

Californian Sea Lions

The Fountains at Aranjuez

International Postal Order System

New York Academy of Sciences

New Mechanical and Engineering Inventions

Recent American and Foreign Patents

New Miscellaneous Inventions

New Agricultural Inventions

New Household Inventions

Communications Received

Departments

  • Departments

    New Books and Publications

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

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June 02, 1877

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