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    Features

    Improved Ice and Refrigerating Machine

    A Great Unrecognized Inventor

    The Vienna Show

    Progress of Cabs

    Is It a Dastardly Outrage?

    Concrete for Building Purposes

    Madder, Vegetable and Chemical

    The Star Shower of August 10

    Scientific and Practical Information - August 9, 1873

    Properties of Saturated Steam

    A New Application of Spectrum Analysis

    Improved Milk Refrigerator

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

    Abbe's Patent Bolt Forging Machine

    Pneumatic Screw Ventilator for Cars

    The Cecropia Silkworm

    Double-Acting Bucket Plunger Steam Pump

    Decisions of the Courts - August 9, 1873

    Recent American and Foreign Patents - August 9, 1873

    Value of Patents, and How to Obtain Them

    Answers to Correspondents

    Communications Received - August 9, 1873

    Departments

    • Cheese Skipper Exterminator

    • Letters

      Correspondence - August 9, 1873

    • Departments

      Business and Personal - August 9, 1873

    • Index of Inventions - August 9, 1873

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    August 09, 1873