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Features

The Type-Reading Optophone, Our Surplus, Our Ships, and Europe's Need and more

An Instrument Which Enables the Blind To Read Ordinary Type

Building Out the Bubonic Plague

How the Twentieth Century Controls the Scourge of the Fourteenth by Waging War on Rats

By H. G. Adams

Automobile Signals for Danger Spots

By G. H. Dacy

Airbrakes for the Automobile

By C. W. Geiger

Succeeding in Illuminating Engineering

What This Characteristically Modern Profession Holds Out to the Man Who Enters It

By Raymond Francis Yates

Do Fish Swim as Airplanes Fly?

Striking Analogies between the Laws Governing These Widely Divergent Styles of Moving

By M. Tevis

Putting the San Joaquin to Work

Some Details of the Water-Power Development in California's Fruitful Valley

By Arthur L. Dahl

The "Super-Destroyer"

Some Facts Concerning the Origin and Development of the Flotilla Leader

By Hector C. Bywater

Golf Without a Caddy

By Elmer A. Sperry

Keeping in Step

By Ralph Howard

Sending Photographs Over Wires

Details of the Belin System To Be Tried Between St. Louis and New York

By Austin C. Lescarboura

Eliminating the Flash from Rifles and Big Guns

By M. Tevis

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  • Recently Patented Inventions

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November 1920

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