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Every Man to his Trade, The "Bath-tub" Decision and the Patent Law and more

Magnetic Chucks for Machine Tools, Microscopic Crystal Forms as Suggestions for Designers and more

By Joseph B. Baker

The Fourth Paris Aviation Salon

Review of the Show With Mention of the Improvements During the Past Year

Some Developments in Wireless—II, The Rediscovery of America and more

By John Hays Hammond Jr.

Asphalt Still a Mysterious Material

By Newton Forest

The Industrial Daredevil, The International Federation of Expositions, and more

By P. Harvey Middleton

An Electric Safety Lamp for Miners, Automatic Car Coupler and more

By Robert G. Skerrett

The Motor Truck's Span of Life, Motor Track Queries and Answers

By John R. Eustis

Public Support of the Aeroplane Fleet in France

Finding Financial Freedom

By Franklin O. King


  • Departments

    The Heavens in December 1912

  • Inventions New and Interesting - November 30, 1912

  • Recently Patented Inventions - November 30, 1912

  • The Motor-driven Commercial Vehicle - November 30, 1912

  • Notes and Queries - November 30, 1912

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