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Features

Improved Device for Measuring Power in Transmission, Supply of Iced Water to Paris

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

Obituary

Facts Concerning the Financial Condition of the South

Condensation in Steam Pipes--Low Pressure

Hand Tooling--The Button Tool

Mechanical Practice at Home--The Foot Lathe

Will Steam Ignite Combustible Substances?

Submarine Drilling and Blasting--The Shel-Bourne Submarine Drill

Abolishing of the Franking Privilege

Insurance--Duties of Companies and Insurers

The Eventful Year of Our Lord 1868

Reminiscences of Travel in Spain

What is Science?

Conceptions of the Infinite

Editorial Summary

Geographical and Archeological

Manufacturing, Mining, and Railroad Items

New Publications

Recent American and Foreign Patents

Official List of Patents

Issued by the United States Patent Office

Answers to Correspondents

Patent Offices

European Patents

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January 01, 1869

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