Volume 118, Issue 11
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Features
Notice to Our Readers, Bridge Versus Ice Blockade, and more
The Hospital on Rails
British-Built Equipment for American Units in France
The Fats of Fighters
How Some of the World's Armies Get This Necessary Ration
Turning a Pest to Profit
How Uruguay Proposes to Make an Asset of Her Locust Invasions
What Machinery Means
By How Much Does It Increase the Productive Capacity of the Worker?
Concerning Fuel
Silks For Fire Wood and Diamonds For Coal
Doing Away with the Arc
How the Incandescent Lamp and Optical System Were Developed for Motion-Picture Projection