Features
F. Crace Calvert on Preserving Meat
Polytechnic Association of the American Institute
New Rebel Torpedo
Age of the Human Race
The Tumble in Prices
Worcester's and Jones's Door Spring
Native Chicory
Ill-Regulated Machinery
Peculiarities of the Paddle-Wheel
Slovenly Workmanship
The Theory of Expansion
Recent American Patents
Patent Claims
Issued from the United States Patent-Office
Departments
- Departments
Correspondence
Notes and Queries
Patents