Features
A Tea Cultivator Wanted
Mica
Steam Boiler Notes
Improvement in Tables
New Graduating Apparatus
Jointed Pitch-Board for Squares
Improved Drawing Pen
The Telephone.--Judge Lowell's Opinions Commented Upon.--Ingenious Transformations
Mechanical Inventions
New Car Coupling
Improved Curtain-Cord Tightener
Improved Mortising Machine
Velocipede Boat in the Public Garden, Boston
American Industries.--No. 77
Miscellaneous Inventions
Departments
- Departments
New Inventions
Recent Inventions
Index of Inventions
Business and Personal
Notes and Queries
