An Aeroplane Machine Gun that Fires Between the Revolving Propeller Blades, A New Type of German Locomotive, and more
Fokker's synchronization mechanism for machine gun and aeroplane propeller.
Volume 115, Issue 27
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Features
Making Lime from Marble
Where Tons of Stone from the Dumps Are Converted Into a Thing of Value
Inoculating the Mortgage-Lifters
How the Disastrous Hog Cholera Epidemic is Being Controlled
Strategic Moves of the War, December 20th, 1916, A New Method of Salvaging Sunken Ships, and more
By Our Military Expert
Heating a Porous House, Unloading Coal Cars by Turning Them Upside Down, and more
Motion Picture Portraits
Selecting One's Photographs from Over Five Hundred Poses Taken at a Sitting