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    The Meridian Circle in the Paris Observatory

    Utilization of the Heat of the Sun, A New Cement, and more

    Curious Hydraulic Experiments

    The Paris Exposition

    The Education of a Civil Engineer

    Rubies and Sapphires, Artificially Produced

    New York Academy of Sciences

    An Ingenious Method of Cutting Spiral or Rifle Grooves with an Ordinary Planer

    New Diamond Tool Millstone Dressing Machine

    Draper's Stovepipe Joint

    Roth's Improved Saw File Guide

    Rice's Improved Boiler Feeder

    Konz's Improved Furniture Caster

    A Beautiful Orchid

    The Silky Marmoset

    Astronomical Notes

    Reeves' Excavator

    Hymer's Coal Cabinet

    Communications Received

    Wants and Business Inquiries

    The Scientific American

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    • Index of Inventions

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    January 05, 1878

    See the World from a Different Perspective

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