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Features

Aschenbrenner's Improved Sugar-Making Process

Concerning a Telescope of Unlimited Power

Better Times

On the Purchase of Patents

A Word to Our Subscribers

Eloquence and Patent Fuel

Scientific and Practical Information - December 13, 1873

The Protection of Plants by Artificial Clouds

The Suppressed Member

The Baby Hippopotamus' Birthday

The Iron Works at Merthyr Tyndvil, South Wales

The Oreodoxa Regia Palm

Flax and its Preparation

Completion of the Hoosac Tunnel

Improvements in the Ventilation of the United States Senate Chamber

The Uses of Nickel

The Savings of Science

Apparatus for Filtering and Rectifying Spirits

Combined Snow and Earth Shovel and Plow

Dunning's Improved Pipe Coupling

The Brighton Aquarium

The Cocuyo

The Germ Theory and its Relations to Hygiene

By F. A. P. Barnard

A Practical System for the Sale of Patents

Decisions of the Courts - December 13, 1873

Recent American and Foreign Patents - December 13, 1873

Answers to Correspondents - December 13, 1873

Communications Received - December 13, 1873

Departments

  • Letters

    Correspondence - December 13, 1873

  • Departments

    Business and Personal - December 13, 1873

  • Index of Inventions - December 13, 1873

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