Features
Indoor Exercise
Poison of Snakes
Boiler Flue Flanging Machine
A Window Cleaning Brush
A Foot Bath Device
An Electric Belt and Body Attachments
A Propelling Mechanism for Vehicles
An Improved Safety Valve
A Safety Bolt for Spring Latches
An Improved Wrench
A Smoke Effect with a Single Lantern
A Pneumatic Flying Machine
An Improved Churn
Church Acoustics
Scientific American Building Edition- March 14, 1891
List of Architectural Books
Experimental Science- March 14, 1891
The Scientific American
Departments
- From the Editor
To Inventors- March 14, 1891
- Recommended
New Books and Publications- March 14, 1891
- Departments
Recently Patented Inventions- March 14, 1891
Business and Personal- March 14, 1891
Notes & Queries- March 14, 1891
Index of Inventions- March 14, 1891
