Features
Port and Harbor Facilities, Electric Waves From Ocean Tides and more
The Voice of the Sea
Favorite Nooks on the Shores of the Atlantic and the Pacific
Curved or "S" Courses
A Protection Against Torpedo and Gunfire
The Final Solution of the Airship Problem
Industrial Production of Helium and What It Means in the Future of the Airship
Battleplane Armament
From the Automatic Pistol of the Early Airman to the Multi-Gun Fighting Airplane of Today
The Principles of Camouflage--I
The Art of Concealment and Deception as Practiced on Land
Decoy Ships for Submarines
Some Details of Naval Actions Which Brought the Victoria Cross
World Markets for American Manufactures
Weighing the Temperature for Blind Folk, A Stretcher that Gives up its Load Painlessly
The Sahara Hydrological Station
Departments
- Departments
Inventions New and Interesting - January 25, 1919
