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The Senate, the Scientific American, and the New York Sun

Sir William White on the American Navy

Erecting the First Cored Monolith

The Stock Car Race for the Briarcliff Trophy

How Stereoscopic Effects may be Produced with a Pinhole Diaphragm

By Gustave Michaud

A Campanile 700 Feet High

The Berlin Oceanographic Museum

By Alfred Gradenwitz

Fireless Locomotives in Germany

A Camp on Wheels

Grinding Attachment for Check Valves

Oddities in Inventions

An Attachment for Trolley Car Poles

Locking Device for Screws


  • Departments

    The Heavens in May

  • Correspondence - May 2, 1908

  • Recently Patented Inventions - May 2, 1908

  • Notes and Queries - May 2, 1908

  • Index of Inventions - May 2, 1908

  • New Books, Etc. - May 2, 1908

  • Patents - May 2, 1908

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