Features
The City Hall and its Setting, Books For Bullets and more
For Seed or for Fiber?
How a Faulty System Has Led the American Flax-Grower to Waste Millions of Dollars
Parachutes for Airplanes
The Difficulties Which Have Prevented Their Adoption, and the Progress Made in Overcoming These
Powders
Some Characteristics of the Leading Military Explosives
Bunkering Big Ships, The House of the Giant Dirigible R-33 and more
Some of the Modern Equipment for Putting Coal Aboard Ocean-Going Craft
The Farmer and the Patent System
How the Man Who Feeds the Nation Is Benefited by the Work of the Inventor
Rotating Projectiles from Smooth-Bore Guns, Smothering a Fire Beneath a Combustible Blanket and more
World Markets for American Manufactures
A Department Devoted to the Extension of American Trade in Foreign Lands
The Current Supplement
The Action of Iron Rust in Contact with Other Metals and Alloys
Departments
- Departments
Inventions New and Interesting - July 12, 1919
