Volume 100, Issue 21
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Features
The Turbine the Complement of the Compound Engine
Futile Criticisms of the Lock Canal
Conditions of the Battleships after the Long Cruise
Engineering
Aeronautics
Electricity
Kaemper's Discoveries in the Mammoth Cave
A Wonderful Model of the Strasburg Clock
Feeding the American Army
A Rack and Pinion Problem
The “North Dakota's” Turbines
Sulphate of Copper as a Fungicide
Col. J. J. Astor's Vibratory Disintegrator
An Ingenious Device Which Manufactures Prouducer Gas From Peat and the Patent Covering Which will be Given to the Public