Features
Report on Armstrong Guns
Correct Explanation of the Ghost
Discoveries and Inventions Abroad
Paper-Making in America
Working Steam Expansively
Miscellaneous Summary
Miles's Wagon Stake
The National Bank
Piston Speeds of Beam Engines
Thunder Storms--Lightning Conductors
Prize Exhibition of Farm Engines
Perpetual Motion
Applications for the Extension of Patents
Portable Engines
Recent American Patents
Patent Claims
To Our Readers
Departments
- Departments
New Books and Publications
Correspondence
Notes and Queries
