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The Treasures of Cumæ

By Mario Corsi

Mendel's Law of Heredity

By Wilhelm Haacke

The Effect of Commercial Fertilizers

By E. B. Vorhees

Regeneration and Transplantation in Animals

By E. Kokschelt

Electricity in the Treatment of Disease

By John V. Shoemaker

Special Message of the President of the United States concerning the Panama Canal, Communicated to the two Houses of Congress on December 17, 1906

The Heating of Feed Water to Approximately Steam Temperature

Colors for Book Edges

The De La Vaulx Airship

A Wick Carbureter

An Easily-Made High-Frequency Apparatus

By A. Frederick Collins

The Art of Cutting Metals

By Fred W. Taylor

Engineering Notes

Science Notes

Electrical Notes

Trade Notes and Formulæ


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