Volume 120, Issue 14
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Features
The History of the War, The Trans-Atlantic Flight and more
The Prevention and Cure of Hookworm
Causes and Extent of the Infection, and. How It Is Being Stamped Out
Hunting Submarines with a Sound Detector
American Invention That Played an Important Role in the War Against the U-Boat
Reconstruction in Europe--VI
The Status of the British Railways
Exploring by Airplane
Some Opinions on the Possibilities of Winged Exploration Parties of the Near Future
America's Great Effort in Ordnance--I
Supplying Our Two Million Men in France with Artillery, Machine Guns and Rifles
U. S. S. "New Mexico"
A Description of the World's First Electrically Propelled Battleship