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The Proposed Hudson River Suspension Bridge

Original Work in America

Progress of Steam Engineering

An Improved Freight Car Coupler

A Drill to Facilitate Blasting

An Improved Gate Valve

A Locomotive Spark Arrester

Breast Wheel for Lifting Water into the Morris Canal

An Improved Ore Washer

Some Apparatus used by the Vienna Fire Department

The Type-Writer a French Invention

Iridescent Glass

By M. Hopkins

To Inventors- May 23, 1891


  • Letters

    Correspondence- May 23, 1891

  • Recommended

    New Books and Publications- May 23, 1891

  • Departments

    Notes and Queries- May 23, 1891

  • Recently Patented Inventions- May 23, 1891

  • Business and Personal- May 23, 1891

  • Index of Inventions- May 23, 1891

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