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Why is Gasoline High?, Building for the Future and more

House Surgery in the Building Crisis

The Remodeling of Old and Obsolete Houses to Create Pleasing Modern Dwellings

By C. L. Edholm

Is the Dam Safe?

By S. R. Winters

California's Power Famine

By Charles W. Geiger

The Romance of Invention--XI

Elmer Sperry--The Man Who Harnessed the Motion of the Earth

By C. H. Claudy

At the Rock Bottom of Matter

A Popular Explanation of a Much Discussed Theory Based on New Discoveries

By Irving Langmuir

Uncle Sam--Motion Picture Producer

How the Department of Agriculture Is Bringing Special Film Features to All Parts of the Country

By George H. Dacy

Carbon Electrodes in the Making

By A. R. Surface

Where Concrete Things are Cast

By G. Orb

High Flying in the Laboratory

By S. R. Winters

Among the Mountains of Western Canada

Famous Valleys and Peaks of the Canadian Rockies Described By a Mountaineer

By LeRoy Jeffers

The Topical Lamp Post

By Howard C. Kegley

National Life Insurance on the Endowment Plan

Universal Training—What It Is and Do We Want It?

By Tompkins Mcllvaine

Tiny Creatures that Make Bad Water

By Leon Augustus Hausman

Plant Growths that Shed Light

By W. A. Murrill

Two Great Organs

Some Interesting Details of the Philadelphia and Denver Instruments

By J. F. Springer

A Molding Machine Which Throws the Sand


  • Departments

    Correspondence - April 20, 1920

  • The Motor-Driven Commercial

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