Features
Cable Railways for New York City
Malarial Fevers
The Plot Against Patents
Water Line Defense and Gun Shields for Cruisers
The Hostile Patent Bills
Metallic Railroad Tie
Improved Acoustic Telephone
Improved Car Coupling
Improvement in the Leclanche Battery
Improved Hand Truck
Oil on Troubled Waters
Another Curious Case of Freezing
The Twelve Thread Plume Bird
Engineering Inventions - March 22, 1884
Mechanical Inventions - March 22, 1884
Agricultural Inventions - March 22, 1884
Miscellaneous Inventions - March 22, 1884
Departments
- Recommended
New Books and Publications - March 22, 1884
- Departments
Notes and Queries - March 22, 1884
Business and Personal - March 22, 1884
Index of Inventions - March 22, 1884
Patents
