Scientific American Magazine
Volume 32, Issue 14You are currently logged out. Please sign in to download the issue PDF.
Features
The Saxby and Farmer Safety Switches and Signals
Science in Common Schooling
Syrian Sponges
Inspection of Boilers
Michigan's Salt Interests
The Mission of the Fly
The Hudson River Tunnel at New York
Scientific and Practical Information - April 3, 1875
Improved Water Injectors
Red Deer
Recent American and Foreign Patents - April 3, 1875
Communications Received - April 3, 1875
Canadian Patents - April 3, 1875
Departments
Correspondence - April 3, 1875
Business and Personal - April 3, 1875
Notes and Queries - April 3, 1875
Index of Inventions - April 3, 1875
