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Features

Italian Colonization in Africa

A New Theory of Light Sensation

An Extension Ladder for Sleeping Cars

Polishing and Buffing Lathe

An Incline Elevator and Dump

An Improved Car Coupling

Cigarette Paper

The Chase-Kirchner Aerodromic Railroad

Manufacture of Rock Candy

A Carpenter's Makeshift

A Large Punching Machine

A Method of and Apparatus for Amalgamating Ores

Novel Electric Rock Drill

Why Flowers are Beautiful

By The Editor of Popular Science News

To Inventors - May 5, 1894

Departments

  • Letters

    Correspondence - May 5, 1894

  • Recommended

    New Books and Publications - May 5, 1894

  • Departments

    Recently Patented Inventions - May 5, 1894

  • Business and Personal - May 5, 1894

  • Notes and Queries - May 5, 1894

  • Index of Inventions - May 5, 1894

  • Patents - May 5, 1894

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May 05, 1894

Complex Causes. Alternative Solutions.

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