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Features

Improvement in Machine for Forming Rings, Watch Case Centers, etc.

What is Planchette ?

The Impossible in Constructive Science

Editorial Summary

Decision in a Reissue Case

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

Answers to Correspondents

New Publications

Extension Notices

Casks

Water Blowing Through Engine Cylinders

Abuse of the Franking Privilege

Quality of Musical Sounds

Modern Telegraphy

Effect of Labor-Saving Machinery Upon Wages

Importance of Regular Habits

The Sutro Tunnel

Recent Boiler Explosions

Patents and Claims

Issued by the United States Patent Office

Patents

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July 08, 1868

Think Outside the Gift Box