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The New Post Office, Melbourne, Australia

Experiences of a Bureau Officer

A Chapter on American Geology

By Charles Morris

Wrought Iron Bridges for the Nicolai Railway of Russia

Experimental Investigation of a New Force

By William Crookes

Mechanical Movement for Churns, Washing Machines, Etc.

Engravings of Inventions and Machinery

A Valuable Book

Paget's Gipsy Winch

The Late General Rodman

Gold and Silver Waste

Dr. Crookes on Psychic Force

Narrow Gage Railways

New Application of the Oxyhydrogen Light to the Separation of Metals, by Tessie Du Mo-Tay of Paris, France

How Scientific Men Work

Will Gunpowder Explode in a Vacuum?

The Westfield Explosion

Ozonized Ether

Artificial Leather--Utilization of Leather Scraps and Cuttings

Editorial Summary- August 12, 1871

Re-Agent to Detect Nitric Acid

Answers to Correspondents- August 12, 1871

Official Lists of Patents- August 12, 1871

Issued by the U. S. Patent Office

Queries- August 12, 1871

Recent American and Foreign Patents- August 12, 1871

Applications for Extension of Patents- August 12, 1871


  • Letters

    Correspondence- August 12, 1871

  • Recommended

    New Books and Publications- August 12, 1871

  • Departments

    Business and Personal- August 12, 1871

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August 12, 1871