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Features

Improvement in Cotton and Hay Presses, Silvering Glass Mirrors, and more

Apparatus for Determining the Amount of Alcohol in Fermented Liquors

Household Hints

Use of Screw, Plates--Tempering Saws for Machinists' Use

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

Answers to Correspondents

Extension Notices

Wilders's Patent Punching Press

Cumbrousness of Tools for Iron Working

Nitro-Glycerin--Its use, Its Danger--Who Shall Decide when Experts Disagree?

Compressed Air as a Power

Inventors--Their Opportunities and Interests

The American Wood Paper Company and the Fiber Disintegrating Company

Official Report of Patent and Claims

Issued by the United States Patent Office

Pending Applications for Reissues

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February 01, 1868

Confronting Common Wisdom