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Signaling Apparatus used by Airships, Thermometry of Low Temperatures and more

Signaling Apparatus used by Airships
Thermometry of Low Temperatures
The Navy Our First Line of Defense
 

Curbing the Sea at Galveston

How the Seawall Stood up before the Recent Hurricane

By Henry M. Robert

Remarkable Collision between an Oil Car and a Steam Locomotive

By Charles Alma Byers

Strategic Moves of the War-September 15th, 1915

By Matthew E. Hanna

Submarine for Hydrographic Work

Method of Discovering Dangerous Pinnacles in Rocky Bottoms

By Simon Lake

The Largest Hydraulic Motor

Departments

  • Recommended

    Correspondence - September 25, 1915

  • New Books, Etc. - September 25, 1915

  • Departments

    Inventions New and Interesting - September 25, 1915

  • Recently Patented Inventions - September 25, 1915

  • Notes and Queries - September 25, 1915

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September 25, 1915

Help Us Reforest the Mississippi River Valley

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