Volume 124, Issue 26
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Features
Canada's Great Ship Canal
The Present Status and the Ultimate Plans of the Welland Improvement
Improvements in Train Braking
A Combination of Straight and Automatic Air That Gives Remarkable Brake Control on Steep Grades
How the Lower Animals See
Old and New Ideas on the Function and Operating Details of Insect Eyes
Tricks of Traffic Control
Some of the Ingenious Devices and Interesting Methods Employed at America's Busy Corners
The Up-to-the-Minute Laundry
Racing with Model Yachts
Concerning Ice
High Pressure Experiments on Water Carried on by Dr. Bridgman of Harvard
With the Engineers of Industry
A Department Devoted to the Physical Problems of the Plant Executive