Volume 120, Issue 13
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Features
Hurley and the Shipping Situation, The Humanity of Poison Gas and more
A 121-Mile Gun
Ordnance Officers of the United States Army Demonstrate Futility of Super-Range Guns
Operating Room that Flies to the Battlefield
England's Aircraft Industry
A Glimpse of Her Tremendous Achievement from Small Beginnings
The Chemical Foundation
A Semi-Official Corporation that Will Hold the Fort Against German Reinvasion of Our Chemical Industries
Return of the 17-Year Locust
What He is and How to Combat his Ravages
United States Chemical Warfare Service—I
Building a Poison-Gas Plant With a Capacity of 200 Tons Per Day
World Markets for American Manufactures
A department devoted to the extension of American trade in foreign lands.