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Comparison between Torpedo Boat and Merchant Marine Engines

By Alfred Gradenwitz

Liquid Fuel for Naval and Marine Uses

By George Melville

Armored Concrete.—V

By Henry J. Jones

The de Forest Syntonic System of Wireless Telegraphy

By A. Frederick Collins

Contemporary Electrical Science

A Gasoline-Motor-Propelled Roller

By the English Correspondent of Scientific American

The Aladdin Cooker

By Edward Atkinson

The Influence of Light on Plant Development

Transportation Routes and Systems of the World

A Proposed Solution of the Problem of Flight

By Franz Pabisch

Insects as Carriers of Disease

New uses of Peat and Forest Products in Germany

By William Mayner

Oyster Culture in Japan

The Preservation of Maize during Transport by the Clayton Process

Genesis of the Diamond

By George F. Kunz

Engineering Notes

Science Notes

Electrical Notes

Trade Notes and Formulæ


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