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Features

Where Uncle Sam's Income Goes, The Progress of the Einstein Judges

By G. H. Dacy

The Progress of the Einstein Judges, Are we to Become the War Pace-Maker? and more

Our Lagging Gold Production

Reasons Why Less of the Precious Metal Is Being Produced Now Than for Many Years Past

By Arthur L. Dahl

How Hard is a Rock?

By S. R. Winters

The North Platte Project Today

By J. F. Springer

Why the Cliff Dwellers Vanished

A Modern Industrial Hazard that May Have Existed in Prehistoric Times

By Frederick L. Hoffman

The New President of the American Association

By Marcus Benjamin

Disposing of the Sewage

A Typical Plant at Mount Vernon, N. Y., with Special Features of Interest in Overhead Distribution

By Sanford G. Plumb

A New American Industry

How the Making of Toys Has Been Established on a Solid Basis in This Country

By Harry A. Mount

Old 999 Still in Service

By Ralph Howard

With the Engineers of Industry

A Department Devoted to the Physical Problems of the Plant Executive

Departments

  • Departments

    Inventions New and Interesting

  • Index

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December 1920

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