Volume 20, Issue 12
You are currently logged out. Please sign in to download the issue PDF.
Features
Arctic and Antarctic Oceans
Practical Suggestions on Tanning Leather
Illuminating Gas-What it is, and How it is Made
Design for a Block of Six Dwellings
Intermediate Bearing Pulley for Short Belts
Hutton's Patent Automatic Sash Lock
Progress of the Velocipede
On the Poisonous Effects of Bisulphide of Carbon, and its use for the Extermination of Animals Living Underground
The Sum of All the Motions in the Universe
Drowsiness and Remedies For it
The New Administration
Solution
Scenting, Deodorizing, and Ventilating
Periodical Scientific Publications
Protection Considered as a Conservative Element in National Affairs
Education of Idiots
Connection on English Railway Trains
Manufacturing, Mining, and Railroad Items
Answers to Correspondents
Editorial Summary
Recent American and Foreign Patents
Official List of Patents
Issued by the United States Patent Office