A State of War, Plunging Fire and Naval Construction, and more
[Editorial on how close Germany and the U.S. are to open warfare]
Features
Twenty Years' Development of the Holland Submarine
Growth from the 73-Ton, 6-Knot Boat of 1895, to the 1454-Ton, 20-Knot Fleet Boat of 1915
[The cover image for the issue is associated with this article]
The Largest Anchor and How It Is Tested, A Baby Tractor of Great Power
Strategic Moves of the War--March 22nd, 1917
Our Military Expert
The Birth of a New Industry
Vast Canadian Deposits of Asphaltic Sand and How They May Be Developed
The Capacity of a Coal Pile, A Vegetation Map of the United States, and more
Determining the True Meridian
The Present Population of the United States and its Possessions
The Current Supplement- March 31, 1917
Departments
- Letters
Correspondence- March 31, 1917
- Departments
Inventions New and Interesting- March 31, 1917
Recently Patented Inventions- March 31, 1917
