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The Role of the Kite-Balloon in Anti-Submarine Operations

By Robert W. Neeser

"Unsinkable" Cargo Ships, Something for Nothing, and more

Motion-Picture Portrait Photography

Taking Dozens of Photographs at One Sitting To Obtain Natural Portraits

Mountains of Oil

Vast Quantities of Petroleum To Be Extracted from the Shale Cliffs of Colorado

By W. F. Wilcox

Work of the War Trade Board

How and Why Our Foreign Trade Is Being Federally Regulated

By C. H. Claudy

Shadows Cast During a Partial Eclipse, Notice to Our Subscribers

By Robert H. Moulton

The French Design an Unsinkable Ship

A 4,250-Ton Freighter that Would Survive the Blows of Several Torpedoes

Machines for Making Wooden Ships

The Application of Modern Methods to a Very Ancient Task

World Markets for American Manufactures- July 13, 1918

A department devoted to the extension of American trade in foreign lands

By William W. Sniffin

A Further Advance in Mechanical Surgery, Re-Dressing "Dude" Shells in New Working Clothes, and more

A department devoted to the extension of American trade in foreign lands

By F. Honor

Mechanical Equipment of the Farm- July 13, 1918

Latest developments in agricultural machinery and practical suggestions for the farmer

By Harry C. Ramsower

Fly Destruction by Manure

By E. G. Bothwell-Maye

Mounting the Gasoline Engine, Loading Hay by Wind Power

By P. B. Potter

The Current Supplement- July 13, 1918

Loss of Blood Treated by the Serum Method, Paper Clothing


  • Letters

    Correspondence- July 13, 1918

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