Scientific American Magazine
Volume 61, Issue 10You are currently logged out. Please sign in to download the issue PDF.
Features
The Hudson River Tunnel
Government Contracts Undesirable
Elias Loomis
An Improved Governor
An Improved Game Apparatus
An Improved Window Ventilator
An Improved Astronomical Mirror
An Automatic Ash Sifter
The Boynton Bicycle Engine
An Improved Elevator Alarm
The Paris Exhibition
Departments
Business and Personal- September 7, 1889
Recently Patented Inventions- September 7, 1889
Notes and Queries- September 7, 1889
To Inventors- September 7, 1889
Index of Inventions- September 7, 1889
