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Electro-Pneumatic Protector, An Italian Diving Bell--The Inventor Writing Letter at the bottom of the sea, and more

Ventilating Grain Vessel and Grain Car

Foster's Thill Coupling

Smith's Improved Hollow Auger

Improved Pocket Oiler

Psychic Force--Further Experiments by Dr Crookes--Reply to his Opponents

On Musical Telegraph Companies

By P.H. Vander Weyde

Dr. Crookes and Psychic Force

American Forests

Suitable Building Material for Cities

Improvement in Pavements--Artificial Stone Flagging for Sidewalks

The Health of Baron Liebig

Use of Sodium for Blasting

General Reflections Suggested: by the Fair of the American Institute

Propulsion of Street Cars

Queries- November 4, 1871

Recent Patent Decisions- November 4, 1871

Our Chicago Exchanges

Recent American and Foreign Patents- November 4, 1871

Answers to Correspondents- November 4, 1871

Applications for Extension of Patents- November 4, 1871

Official List of Patents- November 4, 1871


  • Letters

    Correspondence- November 4, 1871

  • Recommended

    New Books and Publications- November 4, 1871

  • Departments

    Business and Personal- November 4, 1871

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