Features
Taxing Power of the Legislature
A Cometary Retrospect
Recent Printing Press Improvements
Patented Car Improvements
The Mines and Minerals of India
The Clamond Thermo-Electric Battery
Casting the Standard Meter
Fountain Cave, Virginia
Novel Improvements in Steam Boilers
Scientific and Practical Information - July 18, 1874
An Improvement in Steam Pumps
Improved Hay and Cotton Press
A Novel Cooking Stove
More Curious Vegetation
Medical Notes - July 18, 1874
Erysipelas.
A Petroleum Motor
Recent American and Foreign Patents - July 18, 1874
Answers and Correspondents - July 18, 1874
Communications Received - July 18, 1874
Candian Patents - July 18, 1874
Departments
- Letters
Correspondence - July 18, 1874
- Recommended
New Books and Publications - July 18, 1874
- Departments
Business and Personal - July 18, 1874
Index of Inventions - July 18, 1874
