Features
Physical Training as a Means of Mental Health
Telegraph Wires in Cities
Another Important Reissue Decision by the Supreme Court
New Theory in Regard to Lunar Volcanoes
Steam Engines for Electric Light Machinery
The Humane Association's Cattle Car Competition
A Telephone Reissue
White Ants in Court
Mechanical Inventions - March 5, 1881
Skate Sailing
New Drop Attachment for Bottles
Self-Winding Watch
Improved Fog Horn
New Hatcheling Device
Agricultural Inventions
Amateur Mechanics
Pinking Machine
The Osprey
Miscellaneous Inventions - March 5, 1881
A Ducking Battery and How to Make It
Communications Received - March 5, 1881
Departments
- Letters
Correspondence - March 5, 1881
- Departments
New Inventions - March 5, 1881
Recent Inventions - March 5, 1881
Business and Personal - March 5, 1881
Notes and Queries - March 5, 1881
New Books and Publications - March 5, 1881
Index of Inventions - March 5, 1881
