Features
The Centennial of the Inauguration of George Washington as President of the United States
Floating Wrecks
A Coupon Ticket Stamp and Punch
An Improved Folding Step for Vehicles
An Improved Trousers Strap
Gem Pencil Sharpener
Improved Inking Device for Type Writers
A Fountain Brush and Sponge Holder
An Improved Padlock
A Magnet for Experimentation
A Mirror Attachment for Opera Glasses, Etc
An Improved Cultivator
A Steam-Propelled Sled
Triple Expansion Engine
The Venomous Serpents or Toxicophidia of the United States
Caudal Appendage in Man*
Crude Petroleum for Manufacturing Purposes
Index of Inventions- May 11,1889
Departments
- Letters
Correspondence- May 11,1889
- Recommended
New Books and Publications- May 11,1889
- Departments
Notes and Queries- May 11,1889
Recently Patented Intventions- May 11,1889
Business and Personal- May 11,1889
To Inventors- May 11,1889
