Features
Position of the Planets in August
Edison Dynamo and Motor
A Light and Simple Fence Machine
A Railway Train Time Register
The United States Drilling Scow General Newton and the Removal of Diamond Reef, New York Harbor
Fossil Patents
Departments
- Letters
Correspondence- August 1, 1891
- Recommended
New Books and Publications- August 1, 1891
- Departments
Business and Personal- August 1, 1891
Notes and Queries- August 1, 1891
Recently Patented Inventions- August 1, 1891
Index of Inventions- August 1, 1891
To Inventors- August 1, 1891