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Features

Watchmaking in America

The Carpenter Self-Threading and Self-Setting Needle for Sewing Machines

Concrete Paving

Influence of Sound upon Rain

Social Classification

Raising of the Steamship "Scotland" off Sandy Hook

Destructive Action of Illuminating Gas on Vegetation

As Regards Protoplasm

Boiler Incrustations

Manufacture of Kumis

American Sumac

By H. E. Colton

Official List of Patents- September 10, 1870

Answers to Correspondents- September 10, 1870

Recent American and Foreign Patents- September 10, 1870

Departments

  • Letters

    Correspondence- September 10, 1870

  • Recommended

    New Books and Publications- September 10, 1870

  • Departments

    Business and Personal- September 10, 1870

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