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File Cutting

Hydraulic Buffer for Checking the Recoil of Heavy Guns

The East London Museum of Science and Art

What is Steel ?

Emile Prevost's New Battery

W. H. Windsor's Printer's Chase

Shaw's Compound Propeller Pump

Boiler Explosions

The Disposal of Sewage

How to Become Bankrupt by Manufacturing

Combustibility of Diamonds--Various Effects Produced by High Temperatures

A New Bleaching Process

The Patent Agency Business

The Approaching Fair of the American Institute

Electrical Organ Blowers and Sewing Machine Motors

A New Idea in Safes

Interesting Extension Cases--New Rules and Regulations

Answers to Correspondents- August 19, 1871

Queries- August 19, 1871

Official List of Patents- August 19, 1871

Issued by the U. S. Patent Office

Recent American and Foreign Patents- August 19, 1871


  • Letters

    Correspondence- August 19, 1871

  • Departments

    Business and Personal- August 19, 1871

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August 19, 1871

The Antidote to Anti-Intellectualism