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Features

The Manufacture of Emery Wheels

By Waldon Fawcett

Whale Oil

Refining sperm oil and whale oil

By Charles H. Stevenson

Collecting Rare Seeds and Plants for the Agricultural Department

By Guy E. Mitchell

Steam Regeneration: Its History

By H. J. Barron

The Ottumwa Box Car Loader

The Depthometer: A Device for Measuring the Depth of Liquids in Tanks, Etc.

The Sanding-Up of Tidal Harbors

Independent Condensing Plant

Lessons of the Baltimore Fire

By F. W. Fitzpatrick

The Wright Experiments in Flying

A Capture of Elephants at the Kraal of Ayouthia, Siam

Reptilian Types: Their Origin and Fate

Conditions in Manchuria

The Building of Harbin

Behavior of Selenium with Regard to Light and Temperature

Recent Studies of Radium and Radio-Activity

New Styles for Women Automobilists

The Kern Burner

Muscular Exertion as an Eliminant of Alcohol in the Blood

Science Notes

Engineering Notes

Electrical Notes

Trade Suggestions from United States Consuls

Trade Notes and Recipes

Patents!

Departments

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    March 12, 1904

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