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How to Harvest Ice Rapidly

An Industry in Which Speed is of Prime Importance

By Harold B. Wood

The Strength of Long-Seasoned Douglas Fir and Redwood

By Arthur C. Alvarez

Elastic Concrete Railway Ties

By Alfred Gradenwitz

The Domestication of Animals

By W. F. Pycraft

The Adaptation of Kerosene to Gasoline Engines

By the Injection of Water

By G. A. Richter and B. L. Pierce

The Forging and Falsification of Postage Stamps

By V. J. Baumann

The Paris Aeronautical Salon

The Fifth “International” Exhibition Almost Exclusively Devoted to French Machines

By John Jay Ide

The Sudden Origin of New Types—I

By Felix Oswald

The White Rhinoceros

“White” Only by Comparison

Is Interstellar Space Empty?

By Russell Sullivan

The Human Worth of Rigorous Thinking

Science a Creation of the Intellect in Its Quest for Harmony

By C. J. Keyser


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