Scientific American Magazine Vol 144 Issue 6

Scientific American Magazine

Volume 144, Issue 6

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Features

Triangulation

How it is Done and What it is For

William Bowie

Our Changing Transportation

Charles Dillon

Zone Television and the Television Arc

Sydney A. Moseley

Tidying Up the Constellations

Henry Norris Russell,

Problems of Calendar Improvement

George Eastman

Tons of Human Hair in Industry

Grace Lockhart

This New Big Business of Gardening

Archer P. Whallon

From the Archeologist's Notebook

Man's Insect Allies

G. Lightfoot, G. Rawson

Change—The Great Competitor

The Autogiro, the result of a new idea, has invaded the transport plane's field and is now in use by several firms

Raymond Willoughby

Sulfur

W. L. Whitehead

Clemenceau and Foch

The United States Enters the War: The Armistice: The Peace Conference

W. D. Puleston

Diesel Versus Gasoline-Engined Plane

A Flexible Amusement Building

A Two-Mile Industrial Water Tunnel

Departments

Across the Editor's Desk, June 1931

Back of Frontispiece, June 1931

Modern Methods in the Fortress City of Palestine

Our Point of View, June 1931

What We Eat, a Shallow-V-Bottom Boat and more

"Finesse" Allowed 3S Soap Mark, Dry Ice Suit Lost and more

Index To Volume 144, January-June, 1931