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Casting Pipe Centrifugally

Protection for the Port of New York, Conservation of the Nation's Water Power, and more

The High Heel in Motion Picture and X-ray

The Latest Scientific Wrinkles as Applied by French Doctors to Investigating This Sore Subject

By Jacques Boyer

Who Exports--And How?

Where Manufacturer, Commission Man and Export House Come In

By Crittenden Marriott

The Twentieth Century Trolley Hospital

Some of the Interesting Features of Cleveland's Big Electric Railroad Repair Shop

The Spad Pursuit Biplane

"THE most successful fighting airplane in the world today"

By John Jay Ide

Shotguns for Our Aviators

By Edward C. Crossman

Mechanical Equipment of the Farm

Latest developments in agricultural machinery and practical suggestions for the farmer

By Harry C. Ramsower

A Steel Mule that Drives Like a Horse

By J. M. Bird

France-England Airplane Postal Service

Nitrate for Farmers at Cost, Trade Marks in Great Britain, and more


  • Letters

    Correspondence- February 2, 1918

  • Recommended

    New Books, Etc.- February 2, 1918

  • Departments

    The Heavens in February, 1918

  • Inventions New and Interesting- February 2, 1918

  • Recently Patented Inventions- February 2, 1918

  • Notes and Queries- February 2, 1918

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