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    Features

    Improved Gap Lathe

    A Bull on the Track

    The Centennial Surplus

    Dual Life

    Alleged Magneto-Photography

    Remarkable Results of Evaporation and Rainfall

    Straightening Saws

    Important Observations on the Rocky Mountain Locust, Or Grasshopper Pest of the West

    By C. V. Riley

    The British Ironclad Alexandra

    A New Hydraulic Engine

    Martin's Gas Regulator for Steam Boilers

    Improved Yard Stick and Bias Measure

    Professor Gray's Telephone

    The Friction of Plain Slide Valves

    The Cat Teaser

    Recent American and Foreign Patents

    New Miscellaneous Inventions

    New Mechanical and Engineering Inventions

    Communications Received

    Departments

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      New Books and Publications

    • Business and Personal

    • Notes and Queries

    • Index of Inventions

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    April 28, 1877

    See the World from a Different Perspective

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