Features
How Science is Annihilated
The Industrial Condition of Germany
How a Piece of Coal Burns
Proposed Tunnel under Newark Bay
Up or Down in Rapid Transit?
The Earthquake Indicator
A New Stellar Indicator
Spectroscopic Quantitative Analysis
Underground Refrigerator for Butchers
A Novel Decoy Fish
Machine for Making Fence Pickets
Improved Hoisting Machine
Astronomical Notes - April 10, 1875
The Storage and Handling of Fluids
Improved Circular Saw Table
Improved Windmill
Strasbourg Cathedral and Its Clock
Recent American and Foreign Patents - April 10, 1875
Decisions of the Courts
Canadian Patents - April 10, 1875
Communications Received - April 10, 1875
Departments
- Letters
Correspondence - April 10, 1875
- Departments
Business and Personal - April 10, 1875
Notes and Queries - April 10, 1875
Index of Inventions - April 10, 1875
