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Huge Bridge to Facilitate Coal Handling, Oil Pipe Line Across Scotland and more

Reconstruction in Europe--III

The British Plan

By C. H. Claudy

The Principles of Camouflage--III

The Visibility of Airplanes

By M. Luckiesh

The German Art of Make Believe

How Germany Got Along With Various Substitutes During Her Prolonged Isolation

The World's Coal Supply

Where It Comes From and How It Is Used

Human Reconstruction

How the War's Shattered Victims Are Reëducated for Civilian Life

World Markets for American Manufactures

By Lynn W. Meekins

Making Two Destroyers Into One

The Mystery of the Boomerang

By P. A. Vaile

Isaac Hill Bryant, The Current Supplement and more

The Economic Effect of the Loss of Alsace-Lorraine


  • Departments

    Correspondence - February 22, 1919

  • Inventions New and Interesting

  • Recently Patented Inventions - February 22, 1919

  • Notes and Queries - February 22, 1919

  • New Books, Etc. - February 22, 1919

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