Features
Boiler Explosion Notes
The Preservation of Eggs
Loan Exhibition of the Ohio Mechanics' Institute
The Jeannette Relief Expedition
New Strainer for the Outlet of Tubs and Basins
Novel Chart Rack
Engineering Inventions
An Improvement in Horse Collars
Improvement in Steam Boiler Furnaces
Electric Induction by Stress
Recent Inventions - July 2, 1881
New Road Scraper
Porcelain Urn
Agricultural Inventions - July 2, 1881
The Prospects and Present State of Photography in Natural Colors
In Two Chapters
Miscellaneous Inventions - July 2, 1881
Departments
- Departments
New Inventions - July 2, 1881
Correspondence - July 2, 1881
Business and Personal - July 2, 1881
Index of Inventions - July 2, 1881
Notes and Queries - July 2, 1881
