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Features

Army Engineers will Build Panama Canal

Bridging the Hudson River

New York Central Six-Track Subway

Side-Door Cars and Rapid Transit

Government Test of Submarines

Orson Desaix Munn

Kites in Life-Saving Operations

A High-Speed Bavarian Locomotive

By William Mayner

The Passing of American Square-Rigged Vessels

By James J. M'Curdy

The Telharmonium--An Apparatus for the Electrical Generation and Transmission of Music

The Opium Industry

The Uviol Lamp

Anchoring Device for Posts

Modern Use of an Ancient Invention

A Novel Steam Trap

Improved Cable-Cutting Device

Oddities in Invention

Departments

  • Departments

    Correspondence - March 9, 1907

  • Recently Patented Inventions - March 9, 1907

  • Notes and Queries - March 9, 1907

  • Index of Inventions - March 9, 1907

  • Patents - March 9, 1907

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March 09, 1907

Beyond XX and XY

Biology. Identity. Equality.