Features
Comparative Operating Cost of Horse and Electric Delivery Wagons
The Wage of Original Research
Floating of the Paris
Brooms as Germ Breeders
Time of Transatlantic Passage Again Reduced
Animal Tool-Users, Engineers, and Mechanics
The Eastman
A Simple Mold for Composition Rollers
A Simple Tool for Cutting Pipes
Moving a 500-Ton Train-Shed Arch
Niagara Falls Power Plant
Alessandro Volta
A Catalina Walking Fish
To Inventors July 22, 1899
Departments
- Letters
Correspondence - July 22,1899
- Recommended
New Books, Etc. - July 22, 1899
- Departments
Recently Patented Inventions - July 22, 1899
Business and Personal - July 22, 1899
Notes and Queries - July 22, 1899
Index of Inventions - July 22, 1899
Patents -July 22, 1899
