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President Wilson on the Freedom of the Seas, Our New 16-Inch Naval Gun and more

British and French Tanks

[An overview of the main types of tank in use]

Uncle Sam's Ground Schools for Flyers

Giving Observers Practical Experience in "Spotting" on a Miniature Battlefield
[The cover image is associated with this article]

By C. H. Claudy

The Equipment of an Army, State Activities of the Council of National Defense

By Albert A. Hopkins
[The image on the front page is associated with this article]

By Albert A. Hopkins


Staging Motion-Picture Productions with the Aid of the Microscope

By Austin C. Lescarboura

Dr. Hugh Robert Mills

Unique Plan to Save Coal, The Current Supplement and more


  • Departments

    The Service of the Chemist- January 19, 1918

  • The Motor-Driven Commercial Vehicle- January 19, 1918

  • Notes and Queries- January 19, 1918

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis