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New Knowledge of the Rise of Man

By A. A. Hopkins

Ultra-Violet Light and Forgery

By Elbridge Walter Stein

Avalanches and Avalanche Protection

Things that Happen in Sunspots

By Henry Norris Russell

America Emerges from Partial Maritime Eclipse

By F. D. McHugh

Flying in the Beginning, October 1932

By Hugh D. Wise

In a Rifle Factory

Over 2500 Operations Are Required to Produce Accurate Rifles That Stand the Test of Use

Factory Punishment for Tires

Physical Laboratories of the Stars

By Theodore Dunham Jr.

Profiting by Enforced Leisure

Hoover Dam

Materials, Supplies, Manpower, and Program of Future Work

By Walker R. Young

The Liner that Can not Roll

A 'Postoffice' for Freight

Houses of the Future

May Be Made in Factories But Will Be Built to Individual Design

Salmon Fishing

Brings Millions of Dollars Yearly to the Pacific Coast. How the Salmon Are Caught and Canned

By C. W. Geiger


  • Departments

    Across the Editor's Desk, October 1932

  • Back of Frontispiece, October 1932

  • Recording the Past Despite Wind, Flies, and Heat

  • Our Point of View, October 1932

  • Science Aids Quest for Gold, Better Mummies and more

  • U.S. Patents Lead World, "Taylord" Mark Held Descriptive and more

  • Books Selected by the Editors, October 1932

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