Features
The Sailing of Two Polar Expeditions
An Improved Feed Rack, Barn, Etc.
A Lock with Key Held Pendent
An Extensible Barrel Truck
Improved Wimshurst Static Electrical Machine
An Improved Car Coupling
The Artesian Well at Springfield, South Dakota
The St. Clair Tunnel Locomotives--The Largest Locomotive in the World
Simple Apparatus for Gathering and Examining Microscopic Objects
A Book Finisher's Lettering Machine
The Hitchcock Life Guard for Electric Cars
Edison's Kinetograph and Cosmical Telephone
Departments
- Letters
Correspondence- June 20, 1891
- Departments
Notes and Queries- June 20, 1891
Business and Personal- June 20, 1891
Recently Patented Inventions- June 20, 1891
Index of Inventions- June 20, 1891
To Inventors- June 20, 1891
