Volume 125, Issue 5
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Features
On the Trail of News, Doing Instead of Talking, The Paradox of Civilization
Electricity, Science, Engineering
What are Vitamines?
Studies and Experiments which Cast some Light on these Mysterious Elements of Nutrition
Learning the Truth About Arches
A Machine that Clears Away Land, New Varnish that Insulates
Home Building Simplified
What Inventors are doing by Way of Giving the Home Builder more House for Less Money
Tomorrow's Airships
A Survey of what has been Done in Commercial Aviation and its Bearing on the Future
Synthetic Agriculture
How Knowledge and Consideration of every Factor can Increase the Farmer's Return
With Model Basin and Wind-Tunnel
How our Naval Constructors Check up their Designs by Means of Miniature Hulls and Model Airplanes
Transporting Electric Current
Modern Transmission Lines and the Manner of their Construction
With the Engineers of Industry
A Department Devoted to the Physical Problems of the Plant Executive