Features
The Waterbury Brass Mills
Valuable Receipts
History of Aniline Colors
The Wonders of the Skin
Malleable Iron and Steel from Pig Iron
A Pneumatic Post
Intellectual Tools
Death of Benjamin Pike, Sen
The Iron-Clads at Fort Sumter
Patent Claims
Issued from the United States Patent Office
Recent American Patents
Departments
- Departments
Correspondence
Notes and Queries
