Features
Romance of the Steam Engine
Aniline Dyes
Column of Varieties
Breech-Loading Cannon
The New President and the Commissioner of Patents
The Report of the Commissioner of Patents
The Polytechnic Association of the American Institute
Patent Claims - March 9, 1861
Departments
- Letters
Our Correspondence - March 9, 1861
- Departments
Notes and Queries - March 9, 1861
