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Features

The Revival of the Torpedo Boat

The City Hall and its Setting, Books For Bullets and more

For Seed or for Fiber?

How a Faulty System Has Led the American Flax-Grower to Waste Millions of Dollars

By R. S. Skerrett

Parachutes for Airplanes

The Difficulties Which Have Prevented Their Adoption, and the Progress Made in Overcoming These

Powders

Some Characteristics of the Leading Military Explosives

By Julian S. Hatcher

Bunkering Big Ships, The House of the Giant Dirigible R-33 and more

Some of the Modern Equipment for Putting Coal Aboard Ocean-Going Craft

By J. F. Springer

The Farmer and the Patent System

How the Man Who Feeds the Nation Is Benefited by the Work of the Inventor

By Edwin J. Prindle

Rotating Projectiles from Smooth-Bore Guns, Smothering a Fire Beneath a Combustible Blanket and more

By C. G. Abbot

World Markets for American Manufactures

A Department Devoted to the Extension of American Trade in Foreign Lands

By Lynn W. Meekins

The Current Supplement

The Action of Iron Rust in Contact with Other Metals and Alloys

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    Inventions New and Interesting - July 12, 1919

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July 12, 1919

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