Features
Mr. Dawson's Idea of Evolution
The Woodbury Patent
Shall We Eat the Horse?
Another View of Mr. Crookes' Last Discovery
Explosions in Gunpowder Mills by Electricity
The New Department of Aesthetics
Lightning Rods
Improved Universal Grinder
Compresses Steel
Practical Mechanism - September 18, 1875
Furnace Working with Petroleum
New Locomotive Feed Water Heater
Electrical Speed Recorder
Swans
Magnetism
Recent American and Foreign Patents - September 18, 1875
Canadian Patents - September 18, 1875
Departments
- Letters
Correspondence - September 18, 1875
- Departments
Business and Personal - September 18, 1875
Notes and Queries - September 18, 1875
Index of Inventions - September 18, 1875
