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Features

New Refractory of Great Potential Value in Steel Making

The Formation of Glacial Rivers

By Jas. G. McCurdy

Closing the North Sea; The Short-Lived Destruction of War; and more

Closing the North Sea
The Short-Lived Destruction of War
How the German Line Can Be Broken [with 5,000 aeroplanes]
and more

The Submarine Problem--IV

Closing the North Sea with a Bomb-Curtain

By J. Bernard Walker

Strategic Moves of the War--June 14th, 1917

By Our Military Expert
[Ypres, Corso, King Constantine]

Dairy Preparedness

Educational Work of the Dairy Division of the Bureau of Animal Industry

By C. H. Claudy

Home Canning to Prevent Food Waste

By C. L. Edholm

How a Microbe Grows

By Maud DeWitt Pearl

How the Austrians Make Paper Twine, Yarn and Belting, Paper of Mercerized Cotton, and more

Departments

  • Letters

    Correspondence- June 23, 1917

  • Recommended

    New Books, Etc.- June 23, 1917

  • Departments

    Inventions New and Interesting- June 23, 1917

  • Pertaining to Apparel, Pertaining to Aviation, and more

  • Notes and Queries- June 23, 1917

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June 23, 1917Cover Image: Lowering a recovered torpedo into the hold of the U.S. S.  "Pennsylvania" after target practice.

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