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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

Facts Concerning the Financial Condition of the South

Obituary

Condensation in Steam Pipes--Low Pressure

Mechanical Practice at Home--The Foot Lathe

Hand Tooling--The Button Tool

Abolishing of the Franking Privilege

Will Steam Ignite Combustible Substances?

The Eventful Year of Our Lord 1868

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

Insurance--Duties of Companies and Insurers

Conceptions of the Infinite

What is Science?

Reminiscences of Travel in Spain

Editorial Summary

Geographical and Archeological

Manufacturing, Mining, and Railroad Items

Recent American and Foreign Patents

New Publications

Answers to Correspondents

Official List of Patents

Issued by the United States Patent Office

European Patents

Patent Offices

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January 01, 1869

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