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Features

Combined Hand and Foot Circular Sawing Machine

Spool Blank Roughing Machine

How Axes are Made

The Car Shops of West Albany

The Advantages of Scientific Education

Handles for Barrels and Boxes

Detection of Impurities in Milk

Bed Bottom

Giffard's Universal Piston

American Horses

Miscellaneous Items - September 7, 1872

Griswold's Dental Plugging Instrument

Fancy Weaving Loom

Iridescent Engravings

Science and Theology

Progress of American Industry—Inauguration of Five Grand Industrial Expositions

Progress of the New Docks in this City—Artificial Stone Blocks Weighing Seventy-Nine Tuns

Scientific and Practical Information - September 7, 1872

Manufacture of Vinegar

Remarkable Thunderstorms

The Lake Superior Copper Regions

Letter from Professor R. H. Thurston - September 7, 1872

Recent American and Foreign Patents - September 7, 1872

Practical Hints to Inventors - September 7, 1872

Foreign Patents—A Hint to Patentees

New Patent Law in Canada - September 7, 1872

Departments

  • From the Editor

    Answers to Correspondents - September 7, 1872

  • Letters

    Correspondence - September 7, 1872

  • Recommended

    New Books and Publications - September 7, 1872

  • Departments

    Notes and Queries - September 7, 1872

  • Business and Personal - September 7, 1872

  • Index of Inventions - September 7, 1872

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September 07, 1872

Complex Causes. Alternative Solutions.

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