Features
Keeping Books by Machine
The Punched Card as a Saver of Brain Energy
Creating a Subterranean River Ninety Miles in Length
How Catskill Water is Being Brought to New York
Supplying a Metropolis with Mountain Water
How Mining Operations Are Being Carried on Through the Heart of New York
Queer Automobile Bodies
Some Interesting French Designs
Friedmann's New Tuberculosis Remedy, The New York Motor Boat Show and more*
Departments
- Letters
Correspondence - March 1, 1913
- Departments
The Heavens in March 1913
Recently Patented Inventions - March 1, 1913
Notes and Queries - March 1, 1913
