Scientific American Magazine Vol 107 Issue 22

Scientific American Magazine

Volume 107, Issue 22

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Features

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

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

John Hays Hammond Jr.

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

P. Harvey Middleton

Asphalt Still a Mysterious Material

Newton Forest

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

Robert G. Skerrett

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

John R. Eustis

Public Support of the Aeroplane Fleet in France

Finding Financial Freedom

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