Scientific American Magazine
Volume 44, Issue 20You are currently logged out. Please sign in to download the issue PDF.
Features
Tornadoes, Hailstorms, and Waterspouts
Heat, Light, and Power without Cost
Another New Motor
The Keely Motor Deception
The Gamgee Perpetual Motion
Improved Door Fastener
Dose-Measuring Bottle
Improved Post Hole Digger
American Industries.No. 73 - (American Industries.--No. 73)
Araometric Method for the Estimation of Fat in Milk
New Hot-Air Bath Chamber
New Road Car
The Alligator Snapping Turtle
Miscellaneous Inventions - May 14, 1881
The Electric Light in an Art Gallery
Krugg Jugs
Botanical Notes
Departments
Correspondence - May 14, 1881
New Inventions - May 14, 1881
Recent Inventions - May 14, 1881
Index of Inventions - May 14, 1881
Business and Personal - May 14, 1881
Notes and Queries - May 14, 1881
