Features
History of Ice-Making Machinery
Condensed from the Milk Journal.
Soda
Extraordinary Experiments on Steam Boilers
Free Piston Air Pump
The American Historical Record
Preparation and Composition of Alloys
Knife Cleaner and Polisher
Mechanical Needle Sharpener
Haupt's Improved Easy Chair
The Late James Fisk, Jr.
Accurate Workmanship
High and Low Steam
Teach the Children to Draw
Pure Air
The Study of Botany
Scientific and Practical Information - January 20, 1872
Portable Fire Extinguisher
To City Subscribers - January 20, 1872
Recent American and Foreign Patents - January 20, 1872
Under this heading we shall publish weekly notes of some of the more prominent home and foreign patents.
Departments
- From the Editor
Answers to Correspondents - January 20, 1872
- Letters
Correspondence - January 20, 1872
- Recommended
New Books and Publications
- Departments
Business and Personal - January 20, 1872
Notes and Queries - January 20, 1872
Index of Inventions - January 20, 1872
