Features
A Problem for the Air-Ship Builder
Colombia and the Panama Canal
Balloon Measurements of Mammoth Cave's Height
The Trap-Lantern as an Insect Exterminator
Concrete House Building
Automatic Paper-Feeders for Printing Machinery
Development of the 90-Foot Racing Yacht
Improved Breech Mechanism for Heavy Guns
Light Motor for a St. Louis Contest Airship
Machine for Grooming and Shampooing Horses
Cable Grip or Clutch Device
Improved Valve Mechanism
Departments
- Ask the Brains
Notes and Queries - August 29, 1903
- Departments
Correspondence - August 29, 1903
Business and Personal Wants
Recently Patented Inventions - August 29, 1903
Index of Inventions - August 29, 1903
