Volume 125, Issue 11
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Features
The Geologist's Part in Road Building
How Wisconsin's Highways are located with Expert Scientific Advice
Developing Motion Picture Film with Automatic Machinery
Water Level and Weather Observation Station at the Salton Sea
The All-Around Vegetable
The Many Uses of the Sweet Potato, and How to Make the Most of Them
The Economic Aspects of Mobilization
What it Means to a Modern Nation to Put an Army in the Field
Rapid Transit Arithmetic
The Principle of the Economic Unit Applied to Large Cities Utilities
From Star to Chronometer via Radio
The Function and the Manner of Transmission of the Modern Time Signal