Volume 20, Issue 1
You are currently logged out. Please sign in to download the issue PDF.
Features
The Cotton Manufacture in the South
Pocket Sheet Metal Gage
The Barometer--Abstract of a Lecture by Prof. Guyot
Philosophy of the Tea-Kettle--A Lecture by Professor Silliman
Facts Concerning the Financial Condition of the South
Obituary
Hand Tooling--The Button Tool
Condensation in Steam Pipes--Low Pressure
Mechanical Practice at Home--The Foot Lathe
Submarine Drilling and Blasting--The Shel-Bourne Submarine Drill
Will Steam Ignite Combustible Substances?
Abolishing of the Franking Privilege
The Eventful Year of Our Lord 1868
Insurance--Duties of Companies and Insurers
Reminiscences of Travel in Spain
Conceptions of the Infinite
What is Science?
Geographical and Archeological
Editorial Summary
Recent American and Foreign Patents
Manufacturing, Mining, and Railroad Items
New Publications
Official List of Patents
Issued by the United States Patent Office