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Features

The Deserts of Nevada and the Death Valley

By Robert H. Chapman

The Ondameter or Electric Wave Meter

By A. Frederick Collins

Light and Illumination

By Charles P. Steinmetz

Coal Mine Gases

By Richard Lee

Exports of Manufactures from the United States from 1880 to 1906

The New Inland Sea

By Arthur P. Davis

The Ethics of Japan

By Baron Kencho Suyematsu

How Amundsen Prepared for the Arctic

The Nobility of the Chin and the cannibals of Krapina

An Ancient Roman Pump

By Keune

Philippine Irrigation

The Planet Mars as Revealed by Recent Observations

By Abb*amp*eacute; Moreux

Investigation of Effect of Electric Locomotives on Curves

Science Notes

The Centipede Resilient Wheel

Test on Full-Sized New York Central Spikes, made by Robert W. Hunt & Co., Engineers, New York

Engineering Notes

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    April 06, 1907

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