Scientific American Magazine
Volume 65, Issue 4You are currently logged out. Please sign in to download the issue PDF.
Features
Edison Dynamo and Motor
Salt Packing--A $4,000 Prize Contest
The Edison Electric Lamp Patent Sustained
Photographic Notes- July 25, 1891
Improved Mechanical Mixer
An Improved Mortising Machine
Supplying Moving Trains With Water
A Weight Power to Drive Fans, etc.
Some Measurements in the Mammoth Cave of Indiana
Edward Burgess and his Achievements
Locust Visitations
Departments
Correspondence- July 25, 1891
Notes and Queries- July 25, 1891
New Books and Publications- July 25, 1891
Recently Patented Inventions- July 25, 1891
Business and Personal- July 25, 1891
To Inventors- July 25, 1891
Index of Inventions- July 25, 1891
