Features
Our Latest Battleships, the "Nevada" and "Oklahoma"
The Most Powerfully Protected Ships Yet Designed
An Important Development of the Steam Engine
Superheat as an Element of Efficiency
Four-dimensional Space
Its Application to Practical Problems
A Mechanical Violin Player
How a Bow with 3,000 Horsehairs Solved a Difficult Problem
Interlined Printing for the Blind
The Turret Telescope
A New Form of Mounting Adapted to the Comfort of the Observer
Curiosities of Science and Invention
What Inventors are Doing
Simple Patent Law; Patent Office News; Inventions New and Interesting
Hoarding up Happiness
Confusion of Names of Commercial Woods, One of the "Ten Stories" and more
Departments
- Recommended
New Books, Etc. - March 9, 1912
- Departments
Correspondence - March 9, 1912
Recently Patented Inventions - March 9, 1912
Notes and Queries - March 9, 1912
