Features
Tornadoes and Water Spouts
Lemman's Anti-Friction Ball Gate Hinge
Massey's Double Column High Pressure and Low Water Alarm for Steam Boilers
New Test for Kerosene Oils
Plucky Susan, or Luck at Last--A Leaf from the Life of a Western Inventor
An Incident in the Life of Baron Liebig
Terrible Gun Cotton Explosion at Stowmarket, England
The Surf
Japan a Field for Inventions and Machinery
The Origin of Life
Right of Property in Inventions an Abstract Right
Spirits at a Discount
Wagner's Report on Techology
Psychic Force
The Late Professor Payen
Interesting Extension Cases
American Institute Fair
Answers to Correspondents- September 9, 1871
Queries- September 9, 1871
Recent American and Foreign Patents- September 9, 1871
Official List of Patents- September 9, 1871
Departments
- Letters
Correspondence- September 9, 1871
- Departments
Business and Personal- September 9, 1871
