Features
Philadelphia
Pittsburgh Petroleum Trade
Swindling by Machinery
Applications for the Extension of Patents
Miscellaneous Summary
The Wonders of the Animal Kingdom
The *ldquo;Autophoneon”
A Chance for the Ingenious
Christy's Patent Sad-Iron
A Grand Continental Railroad
Is Your Boiler Safe?
What Can Be Done for Inventors--Advice Gratis and Advice for Pay
Breech-Loading Versus Muzzle-Loading Guns
Sorghum Cane and Sugar
Patent Claims
American Inventions Abroad
Recent American Patents
To Our Readers
Machinery Versus Muscle
Departments
- Departments
Correspondence
Notes and Queries
