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J. and J. A. Crook's Saw Sharpener

Modern Suspension Bridges

The Fair of the American Institute

The Geological Importance of Our Western Explorations

Carnivorous Plants

Flat Surfaces

Scientific and Practical Information - October 23, 1875

A Solid Flame Bunsen Burner

Lloyd's Floating Apparatus

Novel Engine Counter and Tell-Tale

Making Gas from Petroleum

New Gas Regulator

Cottrell and Babcock's Perfecting Press for Woodcut Printing-Firm's Rotary Attachment

Portable Steam Engines - October 23, 1875

Improved Ventilating Heater

Land Tortoises

The Manatee or Cow Fish

The Shoemaker's Opportunity

Recent American and Foreign Patents - October 23, 1875

Communications Received - October 23, 1875

Canadian Patents - October 23, 1875


  • Letters

    Correspondence - October 23, 1875

  • Recommended

    New Books and Publications - October 23, 1875

  • Departments

    Notes and Queries - October 23, 1875

  • Business and Personal - October 23, 1875

  • Index of Inventions - October 23, 1875

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