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Improved Street Letter-Box for Lamp Posts, History of Carpeting, and more

Perpetual Motion

Adjustable Stand for Draftsmen

Siemens' Pyrometer

Exercising Apparatus

Tunnel Excavator

Dr. Doremus on the Triumphs of Science

Scientific Administration

Explosions from Hydraulic Pressure

Artesian Wells

Illinois and St. Louis Bridge Company--Report of Capt. James B. Eads, Chief Engineer

Scientific Intelligence- December 17, 1870

The Foremanizing Process for Preserving Timber, The Victims of Its Poisonous Effects, and the Suits at Law Which have been Instituted to Recover Damages

The Great British Problem

Scientific American- December 17, 1870

Answers to Correspondents- December 17, 1870

Queries- December 17, 1870

Official List of Patents- December 17, 1870

Recent American and Foreign Patents- December 17, 1870


  • Letters

    Correspondence- December 17, 1870

  • Recommended

    New Books and Publications- December 17, 1870

  • Departments

    Business and Personal- December 17, 1870

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