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Features

Compression Members in Bridges

Value of Transatlantic Speed

New Compounds

Moving Platforms for the Brooklyn Bridge

A German Chemist's Experiences in America

Butterflies and the Roentgen Rays

Balloon, Airship, and Flying Machine Competitions at St. Louis

Regarding Spar Buoys

By C. H. Claudy

A Boy's Engines and How He Made Them

By A. Frederick Collins

The Double-Deck Surface and Tunnel Station of the Hudson Companies in Jersey City

New 14-Inch Gun for Coast Defense

By Charles A. Sidman

The Chicago-St. Louis Waterway

By W. Frank M'clure

The "Turn-Down" Electric Lamp

By A. Frederick Collins

Breaking up the Ill-Fated British Battleship "Montagu."

By Harold J. Shepstone

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September 21, 1907