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Features

Improvement in Mold Wheel Brick Machine, Pyro-tannin, and more

Elegance of Design an Element of Utility in Machinery

Johnson's Self-Fastening Button

On the Strength of Boilers

Riordan's Clothes Line Holder

“The Wheel”

Recent American and Foreign Patents

Editorial Summary

Answers to Correspondents

New Publications

Extension Notices

Docks and Wet Basins for East River, New York

Transmission of Power by Hydrostatic Pressure

Foreign Matters Imbedded in Growing Timber

Hydrocarbons--Their Inflammability and Explosiveness

Judge Fisher on Reissues, Suspension of a Good Rule

Lectures on the Animal Kingdom

Manufacturing Mining, and Railroad Items

Patents and Claims

Issued by the United States Patent Office

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May 23, 1868

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