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Running Railroads by Water Power

By Thomas F. Logan

Hunting for Derelict Ships

The Difficult Work of Clearing the Seas

Photographing Speech

Some Recent Investigations by Dr. Marage

By Jacques Boyer

The Strategic Moves of the War

Italy on a War Footing

Military Strength of the New Ally

A Novel Dissolving Picture-Projecting Apparatus

By Robert G. Skerrett

Research and Industry


  • Departments

    Inventions New and Interesting - June 19, 1915

  • Recently Patented Inventions - June 19, 1915

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