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Features

The Price of Frightfulness, The Laboratory's the Thing and more

A response to the diplomatic war of words following the sinking of the "Lusitania"

Fuel Oil for Locomotives

Its Study Offers Problems That Are not Met With in Other Fire Feeds

Strategic Moves of the War--July 21st, 1915 and more

By Matthew E. Hanna

Railroad Building Under and Over the Streets of New York--III

Tunneling Through Rock and Sand in the Bed of the East River

William Wallace Campbell, New War Cars for Our Army

By Marcus Benjamin

Burrowing Animals

Borers That Wend Their Way Even Through Rock

By Percy Collins

An Attachment for Stereoscopic Cameras for Taking Ordinary Pictures

Departments

  • Departments

    Correspondence - July 31, 1915

  • The Heavens in August

  • Recently Patented Inventions - July 31, 1915

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis