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A Fresh Deal for the Electric Car

Getting More Miles out of a Gallon of Gasoline

Preserving without Sugar

A Study of the Antiseptic Properties of Cold Water

The Fusion of Tungsten

A New German Process for Working the Obstinate Metal

The Gas Mask in Industry

The Bureau of Mines Tells What it Will Do and What it Will Not Do

The Story of the Bartram Oak

How a Little Exact Experimental Science Solved a Problem of Long Standing

By Arthur Hollick

A Strange Trick Explained

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    Inventions New and Interesting - October 25, 1919

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October 25, 1919

See the World from a Different Perspective

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