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Features

Novelties at the Paris Automobile Show

By the Paris Correspondent of Scientific American

The Winter Sleep of Animals

Armored Concrete.—Part III

By Henry J. Jones

The Gas Turbine

Concrete Building Blocks

Water-Proof Qualities

By S. B. Newberry

Polishing Wheels

Enameling on Iron

To keep Pipes from Freezing

The “Motogodille,” a Motor Device for Propelling small Boats

The Production of Natural Gastric Juice

Treatment for Electric Shock

Artificial versus Natural Dyes

By O. N. Witt

Lunar Photography

By the Paris Correspondent of Scientific American

Canals on Mars

The Pressure of Light

The Electric Spark

By G. A. Hemsalech

Contemporary Electrical Science

Electrical Notes

Science Notes

Trade Notes and Formulæ

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    January 27, 1906

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