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Our Army in Forest and Factory, National Characteristics, and more

The Industrious Photographer

All Pictures Are Not Pleasing; but with the Aid of Brush, Scissors, Paste and a Fresh Exposure, Several Mediocre Prints Can Be Combined to Make One Negative of Merit

By Percy Collins

Some Aviation Economics

What Are We to Do with the Vast Industries After the Sword Is Sheathed?

By C. H. Claudy

Salvaging the Steamship "St. Paul"

How a 13,000-ton Ship, Lying on Her Side Many Feet Under Water, Was Rolled Over and Floated

A Successful Cotton Picker, The Federal Government's Mussel Farm, and more

By Edward C. Crossman

The Current Supplement- October 19, 1918

Quantitative Spectrum Analysis, Test Without Destruction as Achieved by the Permeameter, and more


  • Letters

    Correspondence- October 19, 1918

  • Departments

    The Service of the Chemist- October 19, 1918

  • The Motor-Driven Commercial Vehicle- October 19, 1918

  • Recently Patented Inventions- October 19, 1918

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