Features
Cheap Transit for Oil
Power Required to Drive Cotton Machinery
Morbid Mental Conditions
A Switch Accident
The Manufacture of Gem Stones
Scientific and Practical Information - July 25, 1874
A Safety Furnace
Gang Saw Improvements
Apparatus for Transplanting Trees
Practical Education - July 25, 1874
Earle's Improved Ice Creeper
New Ice Making Process
Improved Furnace for Melting Brass
A Novel Balloon Ascent
Decisions of the Courts - July 25, 1874
The New Steamer Britannic-A New Iropeller Improvement
Recent American and Foreign Patents - July 25, 1874
Answers and Correspondents - July 25, 1874
Communications Received - July 25, 1874
Canadian Patents - July 25, 1874
Departments
- Letters
Correspondence - July 25, 1874
- Departments
Bussiness and Personal - July 25, 1874
Index of inventions - July 25, 1874
