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Electric Sign Monstrosities, New York's New Subway, and more

Engineering- September 24, 1910

Aeronautics- September 24, 1910

Science- September 24, 1910

The Humphrey Gas Pump at the Brussels Exhibition

A Novel System of X-Ray Cinematography

By Alfred Gradenwitz

Testing Weights and Measures in New York City

By Herbert T. Wade

How the Capacity of the New York Subway Power Plant was Doubled

Finish of the Harvard-Boston Aviation Meet

Mexico City's New Water Works System

By Robert H. Murray

Dew with a Cloudy Sky

Magic for Amateurs--XI

Miscellaneous Tricks

By W. H. Radcliffe

The Current Supplement, The Shallowest Large Lake, and more

The Inventor's Department - September 24, 1910

Simple Patent Law; Patent Office News; Inventions New and Interesting


  • Letters

    Correspondence- September 24, 1910

  • Departments

    Legal Notes- September 24, 1910

  • Notes and Queries- September 24, 1910

  • Recently Patented Inventions- September 24, 1910

  • Index of Inventions- September 24, 1910

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