Building the Quebec Bridge, The Liberty Motor, and more
Second Attempt to Raise the 640-Foot Suspension Span into Position, Successful
Features
Science- September 29, 1917
Electricity- September 29, 1917
The Submarine Problem --XVI
Protection, Internal to the Ship, Against the Torpedo
Ideas that will not Work
The Council of National Defense Must Keep an Open Mind, in Spite of Thousands of These
[article on military ideas that are useless]
Touring Plants
Curious Devices Which They Employ for Spreading from Place to Place
A National Asset in East Tennessee
Departments
- Letters
Correspondence- September 29, 1917
- Departments
Invention- September 29, 1917
The Heavens in October, 1917
Inventions New and Interesting- September 29, 1917
Recently Patented Inventions- September 29, 1917
An Electric Furnace for Melting Brass
