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    Features

    Improvement in Machinery for Sawing Wheel Fellies, Improved Cane-juice Bleaching Machine, and more

    Chemical Nomenclature

    National Agricultural Exposition

    Carbolic Acid

    Editorial Summary

    The Use of Explosive Projectiles

    Blasting with Nitro Glycerin--Comparison of this Substance with Gun Cotton and Gunpowder

    Effect of Arsenic Upon Apples

    Recent American and Foreign Patents

    New Publications

    Manufacturing, Mining, and Railroad Items

    Answers to Correspondents

    Extension Notices

    Corrosion of Iron Exposed to Salt Water

    Towles' Patent Elliptic Suspender

    The Nicolson Pavement--Important Patent Extension

    Harlin's Plan for Improving Oil Cups

    Gilding on Wood

    Granite

    The Injustice of Trades Unions

    Ringing in the Ears

    Needless Sacrifice of Life and Property

    Mechanics in California

    Lightning

    250,000 for Stamp Eraser

    Patents and Claims

    Differences in Opinion

    Departments

    • Departments

      Correspondence

    • Business and Personal

    • Patents

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    July 22, 1868

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