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Features

The Latest Japanese Battleship Nagato, Development of Germany's Inland Waterways and more

The Big Eddy Dam

Some of the Difficulties of River Barrage in Rough Country

By J. F. Soringer

That Moon Rocket Proposition

Its Proponent Says a Few Words in Refutation of Some Popular Fallacies

By R. H. Goddard

Shall We Have a National Trade-Mark?

The Advisability of Identifying American Goods in the Markets of the World

By Ernest Townsend Williamson

Winged Transportation

A Survey of Commercial Air Services Both Here and Abroad

By Ladislas d'Orcy

Latin Foods in Old New York

Something Familiar for the Native of Any Quarter of the New World

By L. Lodian

A Phonograph that is Always at its Best, Power Transmission by Fluid Waves and more

By R. G. Skerrett

With the Engineers of Industry

A Department Devoted to the Physical Problems of the Plant Executive

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February 1921

Reanimate Your Brain

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