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Features

The New German Artillery Tactics

Dr. Brown-Sequard's Recent Experiments

An Improved Ash Sifter

An Improved Propeller-Shaft Bearing

A Spark Conductor for Locomotives

An Improved Lock

The Paris Exhibition

An Improved Pocket Knife

An Improved Draughtsman's Protractor

An Improved Ink Eraser

The New U.S.Cruiser Philadelphia

Views on Mt. Hood

Gold Beating

An Improved Feed Water Heater and Condenser

An Improved Floor Beam Connection

Departments

  • Letters

    Correspondence- August 10, 1889

  • Departments

    Notes and Queries- August 10, 1889

  • Business and Personal- August 10, 1889

  • Recently Patented Invention- August 10, 1889

  • Index of Inventions- August 10, 1889

  • To Inventors- August 10, 1889

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