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Features

The Electrical Industry in America

A Review and a Forecast

By E. W. Rice

Lead Azide—A Powerful Explosive

New Composition Opaque to X-Rays

Chemical and Mechanical-Technical Examination of Rubber

War Service Schools at Educational Institutions

South American Frogs

By Richard Deckert

A Steel Ship Built without Rivets

Sources of Platinum

Thermostats

By W.N. Ray and J. Reilly

Recent Observations on the Solar Coronas

Making and Destroying Paper Money

How the Bureau of Engraving and Printing and the Redemption Division Work

By C.H. Claudy

A Serious Wheat Disease Discovered in the East

War Coins, of the Central Powers

Liquid Ostrich Eggs

Liquid Films

Methods for the Production of Pure Cocoanut Oil

Note on the Testing of Magneto Magnets

By J.D. Morgan

The Commencement of the Astronomical Day

Brush-Making Fibers

Use of Crude Napthalene as Fuel for Internal Combustion Engines

The Southern Cross

By Isolina V. Mill*amp*aacute;s

A Review of Mycology—I

Questions of Biology that Still Demand Study

By P. Vuillemin

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    September 28, 1918

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