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Features

The Fastest River Steamer Beaten by a Steam Yacht

The New U.S. Cruiser Dolphin

The English Cutter Genesta

Attachment for Gas Cocks

Improved Brake Shoe

Improved Double Fireplace

Car Coupling

The Laws of Vision and the Harmony of Colors

The "Unique" Single Tube Injector

Improved Traction Engine

Safety Valve and Alarm for Steam Boilers

Experiments with Soap Bubbles and Films

By T. O'Conor Sloane

Engineering Inventions

Mechanical Inventions

Miscellaneous Inventions

Agricultural Inventions

Departments

  • Letters

    Correspondence - June 20, 1885

  • Notes and Queries - June 20, 1885

  • Recommended

    New Books and Publications - June 20, 1885

  • Departments

    Business and Personal

  • Index of Inventions - June 20, 1885

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June 20, 1885

Beyond XX and XY

Biology. Identity. Equality.