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Features

Electric Propulsion for Our Merchant Marine, Synthetic Benzine and more

Power and the City

Some Facts and Figures on How Los Angeles Has Harnessed the Distant Mountain Streams

By Crittenden Marriott

The Unusual in Passenger-Carrying Airplanes

By Alfred Longville

Succeeding in Signal Engineering

A Relatively New Field Opened to the Man Who Wishes to Learn While He Earns

By Raymond Francis Yates

Solving the Labor Problem--III

How Wages Were More than Adjusted to the Cost of Living, with Increased Output and Freedom from Strikes

By E. W. Hulet

The Farm Tractor in 1920

An Effort to Reconcile Conflicting Views and State the True Role of the Mechanical Horse

By Francis Z. Hazlett

Our Diamond Industry

How the United States Has Become the Greatest Buyer of Diamonds in the World

By Harry A. Mount

Radio Prize Winner for 1919

Departments

  • Departments

    The Service of the Chemist

  • The Motor-Driven Commercial Vehicle

  • Recently Patented Inventions

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December 1920

Think Outside the Gift Box