Features
The War
Thermometer as a Steam Pressure Gage
The Power of a Moving Body—The Simple Facts of the Case
Social Science Congress
The American Photographical Society
Glass for Leyden Jars
Information as to the Patentable Novelty of Inventions
The Bombardment of Fort Hatteras—Shells and Big Guns
Phenomena Attending Combustion—Gas and Candle Light
The Influence of War on Inventions
New Engine Condensers
Patents Granted for Lubricating Compounds
The Armstrong Gun and Angulated Iron Plates
Patent Claims - September 21, 1861
Recent American Inventions
Patents in the Southern Confederacy
Work and Power
Instructions about European Patents
The New Gunboats
Departments
- Letters
Correspondence - September 21, 1861
- Departments
Notes and Queries - September 21, 1861
