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Improved Feed Water Heater and Purifier

The Irrigation Works of India

The English Patent Bill

Is Education for Culture or for Use?

The Keely Motor Deception

Spirit Rifle Practice

The British Arctic Expedition


Jones' Improved Blind Stop

New Life Raft

Spayth's Rafter Scale and Bevel Gage

The Hercules Screw Propeller

The Ant-Eater Family

The Cobweb Apple Moth

The American Association for the Advancement of Science

Decisions of the Courts - August 28, 1875

Recent American and Foreign Patents - August 28, 1875

Communications Received - August 28, 1875

Canadian Patents - August 28, 1875


  • Letters

    Correspondence - August 28, 1875

  • Departments

    Notes and Queries - August 28, 1875

  • Business and Personal - August 28, 1875

  • Index of Inventions - August 28, 1875

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August 28, 1875

Of Shamrocks and Science

Happy St. Patrick’s Day