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A Public Drinking Fountain

French Telegraphy at the Exposition

Latent Heat

An Austrian Farmer's Entertainment

Another Arctic Expedition Begun

The Use of Zinc

Scientific and Practical Information - August 2, 1873

Simple Tests for Minerals

Improvement in Bricks

Patent Pig Feeder

A Substitute for the Bell Cord

Improved Ox Bow

New Safety Pump for Sea Going Steamers

Improved Propeller

The Pernyi Silkworm

New Tool Holder for the Slide Rest

On the Manufacture of Vinegar

The Great Exposition--Letter from United States Commissioner Professor R. H. Thurston

Combined Cradle and Rocking Chair

Improved Chain Propeller

Tucking Attachment for Sewing Machines

Baron Von Liebig

Engineering Notes - August 2, 1873

Decisions of the Courts - August 2, 1873

Recent American and Foreign Patents - August 2, 1873

Value of Patents

Practical Hints to Inventors

Answers to Correspondents - August 2, 1873

Communications Received - August 2, 1873


  • Letters

    Correspondence - August 2, 1873

  • Recommended

    New Books and Publications - August 2, 1873

  • Departments

    Notes and Queries - August 2, 1873

  • Business and Personal - August 2, 1873

  • Index of Inventions - August 2, 1873

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August 02, 1873

Of Shamrocks and Science

Happy St. Patrick’s Day