Scientific American Magazine
Volume 70, Issue 3You are currently logged out. Please sign in to download the issue PDF.
Features
A New Optical Lantern
The Potentialities of Chemical Research
An Improved Building Tile
Special Triple Geared Lathe
An Improved Bicycle Driving Gear
An Automatically Operating Valve Gear
An Improved Exhibiting Apparatus
Improvement in Vessels' Hulls
An Improved Fire Ladder
In Ocean Depths
Venomous Spiders
Family Knitting Machines
Improved Automatic Signal Apparatus
A Cable Grip for Coal Cars or Mine Wagons
Pine Cones, or Cocoons?
To Inventors - January 20, 1894
Departments
New Books and Publications - January 20, 1894
Recently Patented Inventions - January 20, 1894
Business and Personal - January 20, 1894
Index of Inventions - January 20, 1894
Notes and Queries - January 20, 1894
Patents - January 20, 1894
