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A Leaky Dam Gets a New Kind of Face

Seeing With Invisible Light

By Herbert W. Forster

A New Dam-Reconditioning Method

By Alf B. Bryn

Is Space Expanding?

By Henry Norris Russell

Mechanical Stevedores Aboard Ship

By G. H. Dacy

Gorilla: Greatest of All Apes

By H. C. Raven

Safety Rules for the Airways

By Clarence M. Young

Eugenics for Cows but Not for Humans

By T.Swann Harding

Making the Nation's Boundaries

By Guy Elliott Mitchell

New York's Newest Subway Cars

What Science Really Is

By Arthur H. Compton

Erosion Dares the West

By W. R. Chapline

From the Archeologist's Note Book

Analyzing "Archie's" Shots

By Albert M. Jackson and Roswell H. Ward

New and Exotic Delights for our Table

By M. H. Talbott


  • Departments

    Across the Editor's Desk, January 1932

  • Back of Frontispiece, January 1932

  • Our Point of View, January 1932

  • New Commercial Synthetic Rubber, Iron Soft as Copper and more

  • Tire Design Patent Granted, Conflicting Mark not Registrable and more

  • Books Selected by the Editors, January 1932

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