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Features

A German Automobile Fire Engine

Some Interesting Experiments in Frankfort. By the Berlin Correspondent of the Scientific American

Influence of the Depth of Water on the Speed of Ships

The Internal-Combustion Engine.—I

Recent Improve

By H. E. Wimperis

Magnetic Separators for Various Uses

Their Application in the Foundry and Machine Shop

By S. R. Stone

Recent Electrical Progress

The Artificial Lighting Field

By Albert F. Ganz

The Ether of Space

By Charles W. Raffety

The making of a New American Cotton

Introducing the Egyptian Cotton into America

By Charles Richards Dodge

Musical Sands in Chile

By M. H. Gray

Sterilizing Butter

Visualizing the Atom.—II

How the Modern Scientist Counts and Measures Atoms

By Ernest Rutherford

Thermo-Penetration

A New System of Electro-Therapeutics

By O. Nairz

Teeth and their Substitutes

Nature's Food Crushers

By W. P. Pycraft

Radium Emanation and the Decomposition of Water

The Sensitiveness of Dyes to Light

Aridity and Evolution

The Effect of Dryness on Life

By D. T. Macdougal

Paint for Iron Ships

Engineering Notes

Trade Notes and Formulæ

Science Notes

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September 25, 1909

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