Features
Great War Ships
Position of the Planets for September
An Improved Machine for Bending and Coiling Pipe
Spider Web to Cocoon Making
An Improved Siphon
A System of Protection from Lightning
Astigmatic Eyepiece for Optical Instruments
An Apparatus for Recording Respirations
An Improved Reversible Safety Stirrup
An Improved Method of Propelling Sleds
The Maccoy Pneumatic Tool
A Powerful Battery
Thomas Corwin Mendenhall
The Paris Exhibition
Departments
- Letters
Correspondence- August 31, 1889
- Departments
Notes and Queries- August 31, 1889
Business and Personal- August 31, 1889
Recently Patented Inventions- August 31, 1889
Index of Inventions- August 31, 1889
To Inventors- August 31, 1889
