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Bringing the Sun Indoors

Diesels in the Air

Prove Their Value, For Military and Commercial Operations, In Active Use, Nearest Approach to Smooth Turbine Like Power Flow

By Paul H. Wilkinson

Slicing and Polishing Meteorites

By Albert G. Ingalls

Boards from Fiber

Composition Boards Originated as Wall Coverings, Now Find Wide Use, Field of Use Constantly Widens, Manufacture, Research for Future

By Philip H. Smith

Planting for Economy

Wider Spacing of Trees, Lower Costs, Weeds, Bushes Enrich Soil, Cause Branches to Rot and Drop Off, Pruning Unnecessary, Quality Lumher

By Clyde Mitchell

How Hot is the Sun?

It Has No Single Temperature hut the Layer that Sends Us its Light Directly Averages About 5740 Degrees, Absolute, or 9873 Degrees, Fahrenheit

By Henry Norris Russell

A Bridge of Peace

United States to Canada, Four Different Types of Spans, The Biggest Little Bridge, Triple-Fundion Pier, New Cable Anchorages Used

By D. B. Steinman

The Enigma of the Submarine Canyons

What Radical Happening Produced Vast Submarine Canyons Comparable with the Grand Canyon? In Lively Fashion the Geologists Debate this Mystery

By Frances P. Shepard

Vegetarian China

For Centuries China Has Unconsciously Been Working Out a Vast Food Experiment From Which the Western World Can Learn Practical Lessons

By William H. Adolph

Turning 'Em Around

Cargo Ships Unloaded, Reloaded Speedily, Efficiently, Method is Exacting Stevedores Supervise, Arrange Cargo, Difficult Details

By Daulton Mann


  • 50 Years Ago, September 1938

  • From the Editor

    Our Point of View, September 1938

  • Recommended

    Books Selected by the Editors, September 1939

  • Departments

    Personalities in Industry, September 1938

  • Making Money out of Roads, Pipe-Line Tracer, and more

  • Camera Angles, September 1938

  • Camera Angles Round Table, September 1939

  • Telescoptics, September 1939

  • Current Bulletin Briefs, September 1939

  • Legal High-Lights, September 1938

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