Volume 106, Issue 18
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Features
Destroying 300 Millions in Paper Money
A Scientific Method of Burning Banknotes
A Flying Machine that Folds its Wings
Ingenious Method of Reducing the Spread of an Aeroplane
Design of Racing Aeroplanes
Drawings of Some Remarkably Fast Monoplanes, With Designs for an International Cup Defender
The Ingenuity of the Toy-maker
Pitting Brains Against Cost of Labor and Materials
Curiosities of Science and Invention - May 4, 1912
What Inventors are Doing - May 4, 1912
Simple Patent Law; Patent Office News; Inventions New and Interesting