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Rock Tunneling Without the Use of Explosives, What the War has Taught American Industries, and more

The Spruce Gum Industry

An Important Article of Commerce from the Northern Woods

By Samuel J. Record

Strategic Moves of the War, June 15th, 1916

Our Military Expert

A Model Hospital Train

Describing the Completeness of the Bavarian State Hospital Train

By Alfred Gradenwitz

Newspapers that are Printed Within Gun Range of the Enemy

Trench journals from French soldier-journalists.

By Jacques Boyer

The Flying Sensation

Could it be Realized?

By C. Dienstbach


  • Departments

    Correspondence - June 24, 1916

  • Inventions New and Interesting - June 24, 1916

  • Recently Patented Inventions - June 24, 1916

  • Notes and Queries

  • Index

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