Features
The Speaking Telephone in New York
Wiggins' Improved Relief and Safety Stop Valve
Prevalent Manias
Safety Valve Tests
Sewage Irrigation on a Small Scale
A New Axe
Improved Machine for Stamping Leather Goods
A New Injector for Steam Boilers
Practical Mechanism
A New Fumigator
Improved Railroad Joint and Nut Lock
Mershon's Improved Rock Drill
A Beautiful Fern
A Snake-Eating Frog
Decisions of the Courts
New York Academy of Sciences
New Mechanical and Engineering Inventions
New Miscellaneous Inventions
New Woodworking and House and Carriage Building Inventions
Recent American and Foreign Patents
Communications Received
Departments
- Departments
New Books and Publications
Business and Personal
Notes and Queries
Index of Inventions
Patents
