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Some Thoughts on the War, When the German Fleet Comes Out and more

Strategic Moves of the War

By Our Military Expert

A Submarine Sunk by a Zeppelin

By C. Dienstbach

The Italian Navy

The First Navy to Set Afloat Ships Combining High Speed With Heavy Guns

The Westinghouse Electro-Pneumatic Air Brake on the Pennsylvania Railroad

By Herbert T. Wade
The Use of Poisonous Gases in Warfare

The Use of Poisonous Gases in Warfare

How Gases Are Generated and How Men May Protect Themselves From Them

By John B. C. Kershaw

A Study in Instinct

The Leaf Roller and Its Writhings

By Harold Bastin

Preventing the Corrugation of Street Car Rails


  • Departments

    Recently Patented Inventions - June 12, 1915

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