Features
Educating Invalid Soldiers
How War Cripples are taught to do without Hands and Feet
Effect of the War on American Industries—II
Permanent Value to Manufacture on Our Soil with Our Native Raw Materials
Mechanical Equipment of the Grand Central Post Office
It Meets the Necessary Requirements for Increased Speed and Economy
Strategic Moves of the War-September 1st, 1915
An Instance of the Parabolic Reflector Reversed, Putting the Light under the Fender
The Current Supplement, The Vitamines, and their Importance for the Maintenance of Health
Departments
- Letters
Correspondence - September 11, 1915
- Departments
Inventions New and Interesting - September 11, 1915
Recently Patented Inventions - September 11, 1915
Notes and Queries - September 11, 1915