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The Artesian Wells of the James River Valley, Dakota

By L. F. Korns

Electric Subway Explosions

An Improved Draught Equalizer

An Improved Vehicle Brake

An Improved Snow Shovel and Scraper

An Improved Foot Board for Wood Choppers

An Improved Fertilizer Distributer

An Improved Book Carriage

Ostrich Farming in California

Chaplin Try and Center Square

An Improved Device for Poaching Eggs

Photographic Notes- April 6, 1889

John H. B. Latrobe

An Improved Drainage-Trap

An Improved Inkstand

An Improved Seal-Press

Some Experiments in Sound

By Geo. M. Hopkins

To Inventors- April 6, 1889


  • Letters

    Correspondence- April 6, 1889

  • Departments

    Business and Personal- April 6, 1889

  • Recently Patented Inventions- April 6, 1889

  • Notes and Queries- April 6, 1889

  • Index of Inventions- April 6, 1889

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April 06, 1889

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