Features
Notes on Naval and Military Affairs
Appleton's Cyclopedia of Drawing
The Color Products of Coal--Mauve and Magenta
The Michigan Salt Works
The London Exhibition--Steel Manufacture
Iron-Clad Vessels Building at New York
The Way the Velocity of Cannon Balls is Measured
Extraordinary Penetration of Armor Plates
Trial of Steam Plows
Valuable Receipts
Recent American Inventions
Patent Claims
Patents for Seventeen Years
Important to Inventors
Rates of Advertising
To Our Readers
The Cheapest Mode of Introducing Inventions
Prospectus of the Scientific American
Hodgson's Chimney Fastener and Holder
Departments
- Departments
Correspondence
Notes and Queries
