Scientific American Magazine
Volume 50, Issue 12You are currently logged out. Please sign in to download the issue PDF.
Features
The New Electric Light at Hell Gate Lighthouse
The Plot Against Patents
Malarial Fevers
Cable Railways for New York City
The Hostile Patent Bills
Water Line Defense and Gun Shields for Cruisers
Metallic Railroad Tie
Improved Acoustic Telephone
Improvement in the Leclanche Battery
Improved Car Coupling
Improved Hand Truck
Oil on Troubled Waters
Another Curious Case of Freezing
The Twelve Thread Plume Bird
Mechanical Inventions - March 22, 1884
Engineering Inventions - March 22, 1884
Agricultural Inventions - March 22, 1884
Miscellaneous Inventions - March 22, 1884
Departments
New Books and Publications - March 22, 1884
Business and Personal - March 22, 1884
Notes and Queries - March 22, 1884
Index of Inventions - March 22, 1884
Patents
