Scientific American Magazine
Volume 44, Issue 23You are currently logged out. Please sign in to download the issue PDF.
Features
Progress of the Hudson River Tunnel
Perpetual Motion Delusions
Electrical Paper
Polarization of Sound
Opening of the New Workshop of the Stevens Institute of Technology
New Belt Clasp
Telegraph Hand Car
Engineering Inventions
New Gang Boring Machine
New Spring Grass Shears
Feed Water Heater and Feed Pump
Mechanical Inventions
New Method of Spacing and Lettering Signs
Leech Farming
John Fitch's Steamboat Experiment on Collect Pond
Communications Received
Departments
Correspondence
Recent Inventions
New Inventions
Notes and Queries
Business and Personal
Index of Inventions
