Scientific American Magazine
Volume 31, Issue 24You are currently logged out. Please sign in to download the issue PDF.
Features
The Keokuk (Iowa) Bridge
The Illumination of Art Galleries
The Patent Office
American Oyster Culture
Polychrome Printing
Solvents for Rubber
The Coal and Iron Products of the World
To our Present and Future Subscribers
Scientific and Practical Information - December 12, 1874
Wire Tramways
A Device for Preventing Priming
The Underground Railway, New York City
Practical Mechanism - December 12, 1874
New Railway Tunnel under the Hudson River, between New York and Jersey City
The City of Pittsburgh and its Industries
A New Hot Air Balloon
Safety Catch for Cranes
Recent American and Foreign Patents - December 12, 1874
Answers to Correspondents
Canadian Patents - December 12, 1874
Communications Received - December 12, 1874
Departments
Correspondence - December 12, 1874
Business and Personal - December 12, 1874
Index of Inventions - December 12, 1874
