Germany's Gotha Battleplane and its Machine-Gun Tunnel, A Theater Without Footlights, and more
"By means of a machine-gun tunnel the rear gunner of the Gotha can
bring his fire to bear on what is generally a "blind spot""
Volume 117, Issue 12
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Features
Industrial Efficiency- September 22, 1917
Science- September 22, 1917
Astronomy- September 22, 1917
Fighting with Axe and Saw
A Regiment of American Lumberjacks and Foresters for European Service
Saving Ships from the Sands
How a Big Dredge Freed a Vessel That Had Lain High and Dry for Ten Years
Strategic Moves of the War, September 13th, 1917
By Our Military Expert
The Submarine Problem--XV
The Merchantship as a Submarine Destroyer
The Absent Treatment in Efficiency Tests
Bringing the Nerves of the Battle Line into the Laboratory
By Jaques Boyer
"building up of a series of tests, partly mental and partly physical, by means of which a candidate for aviation or ambulance driving or some other special work is made to reveal his ability to do that work,"
Exploring the Skies for the Remains of Extinct Comets
Where Amateurs Can Render a Real Service to Professional Astronomers