Features
The "Granges" and their Object
The Study of Mathematics
The Flowing Oil Wells of Pennsylvania--Great Decline in the Price of Oil
Scientific and Practical Information - August 30, 1873
The Sun's Distance and How it is Measured
Engines of Admiral Porter's Torpedo Boat
Concrete Siphons on the Canal Quintino Sella, Lomellina, Italy
Reversing Gear for Rolling Mills
Nature and Art
The Devil Fish
The Great Exposition--Letter from United States Commissioner Professor R. H. Thurston
Brick Compressing Machine
The Diamond Cotton Chopper and Cultivator
French Four Axled Articulated Locomotive
Recent American and Foreign Patents - August 30, 1873
Answers to Correspondents - August 30, 1873
Communications Received - August 30, 1873
Departments
- Letters
Correspondence - August 30, 1873
- Departments
Business and Personal - August 30, 1873
Notes and Queries - August 30, 1873
Index of Inventions - August 30, 1873
