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Building Houses Out of the Waste of War, Rust-Proof Steel in Dentistry and more

Making Farms Out of Deserts

Why We Must Resort to Irrigation, and How We Are Doing So

By Robert G. Skerrett

Gasoline from Natural Gas

By Harry Botsford

Testing Paper by Tearing, The Electrified Blackboard for the Technical Classroom and more

By S. R. Winters

Exploiting the Inventor--I

How the Unscrupulous Patent Attorney Works Upon the Purse of His Client

By C. H. Claudy

The Electric Railroad Over the Rockies

Completion of an Additional Link in the St. Paul's Ambitious Project

By B. S. Beach

Piercing New Zealand's Mountain Barrier

By Oliver Johnson

The Wrecking Derrick and a Concrete Job, Our Instincts have Birthdays, and more

By George F. Paul

From the Mountains of Montana to the Tetons of Wyoming

Strolls Through a Region Whose Scenic Beauties Are Menaced by the Mailed Fist of Commercialism

By LeRoy Jeffers

From Boneyard to Shipyard

The How and Why of California's New Ship-Building Center at Oakland

By H. A. Crafts

Making Wax Dummies for Fashion Displays, Some Novel Uses for the Tattooing Needle

A Botanical Romance


  • Departments

    Correspondence - April 3, 1920

  • Inventions New and Interesting - April 3, 1920

  • Recently Patented Inventions - April 3, 1920

  • New Books, Etc. - April 3, 1920

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