Scientific American Magazine
Volume 61, Issue 3You are currently logged out. Please sign in to download the issue PDF.
Features
Pennsylvania Board of Health Notes
Novel Torpedo Boat Designing and Maneuvering
A Mechanical Movement
An Improved Annealing Box
An Improved Washing Machine
Gerstle's Hinged Handle for Pans, Etc
Barton's Improved Fence
An Improved Magnetic Ore Separator
Eberhardt's Universal Automatic Gear Cutting Machine
The New U. S. Cruiser Baltimore
An Improved Globe Holder
Maria Mitchell
A Nest-Building Frog
Improved Bar Channeling Stone Drill
Departments
New Books and Publications- July 20, 1889
Recently Patented Inventions- July 20, 1889
Notes and Queries- July 20, 1889
To Inventors- July 20, 1889
Business and Personal- July 20, 1889
Index of Inventions- July 20, 1889
