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Improvement in the Ventilation of Railway Tunnels

The Keely Motor Deception

Physical Life After Death

English Patent Law Discussion

Centennial Trade Marks

The Use of Wire in Deep Sea Soundings

The Difference between Water and Nitro-Glycerin

Frozen Water in Bottles

Improved Elevator for Granular Matters


Practical Mechanism - August 7, 1875


By Joshua Rose

Coleman's Key Holder

Brechbiel's Cigar Wrapper Knife

Improved Rotary Rag Boiler

Seel and Shaw's Tweer for Smith's Use

The Russian Circular Ship

Decisions of the Courts - August 7, 1875

United States Circuit Court--Southern District of New York

Recent American and Foreign Patents - August 7, 1875

Communications Received - August 7, 1875

Canadian Patents - August 7, 1875


  • Letters

    Correspondence - August 7, 1875

  • Departments

    Notes and Queries - August 7, 1875

  • Business and Personal - August 7, 1875

  • Index of Inventions - August 7, 1875

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