Features
The Center of the Stars, Staircase Drawers, Congress on Hygiene and Demography
President Wilson on Canal Tolls, Pittsburgh's Smoke Bill, Rewards to Postal Employees for Inventions and more
Fresh Discoveries Regarding Red Blood Corpuscles, The Theory of Gravity, The U. S. Fleet Collier "Jupiter"
A Flat Band With Only one Surface and One Edge
The New Coolidge Roentgen Ray Tube
Modern Hand-Grenades
The Aasen Hand, Rifle and Mine Grenade
The Wanamaker-Curtiss Transatlantic Biplane, Flying Around the World, and more
An Organ on Which Color Compositions Are Played
The New Art of Color Music and Its Mechanism
A Million Shot Group, Curious Cloud Formation and more
A Multiple-brush Boring Machine
A Pocket Edition Motor Vehicle, A Cancer Indicator, How to Fix Screws in Place
A New Scheme for Selling Patents
A Recent By-product Utilization in American Soap Manufacture
Departments
- Letters
Correspondence- February 21, 1914
- Recommended
New Books, Etc.- February 21, 1914
- Departments
Notes and Queries- February 21, 1914