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Features

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

Departments

  • 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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