Features
The Voltaic Pencil
A New Switch Pedal
Glucose Honey
Some Patents that Section 11 would have Killed
A New Industry
A Vegetable Green for Confectioners
A Great Market for Our Cattle and Other Produce
A Hint for an Invention
Haeckel on Evolution
The Laundries of New York
The Demenge Engine and Boiler
A New Potato Digger
The Manufacture of Lard
American Mechanical Genius
Atmospheric Air and the Vacuum
The Porcupine
Improved Window Awning
Designs for Vases
To Inventors
Communications Received
Departments
- Departments
Correspondence
Business and Personal
Index of Inventions
Notes and Queries
Patents
