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The Engines of the Steamer Connecticut

A Novel Experiment with Criminals

An Electrical Course at Columbia

Dangerous Flat Houses

The Use of Radiated Heat

Position of the Planets in February 1889

The Recent Tornado in New York

Revolving Hercules Crane

An Improved Vehicle Spring

An Improved Gas Manufacturing Apparatus

Improved Wear Iron for Vehicles

An Improved Safety Caster

Mlle. Schultze, Doctor of Medicine of the Faculty of Paris

Simple Experiments in Physics

By M. Hopkins

The Leander McCormick Observatory of the University of Virginia

By H. C. Hovey

Trial Trip of the Vesuvius

To Inventors- January 26, 1889


  • Letters

    Correspondence- January 26, 1889

  • Departments

    Business and Personal- January 26, 1889

  • Notes and Queries- January 26, 1889

  • Recently Patented Inventions- January 26, 1889

  • Index of Inventions- January 26, 1889

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Self-Awareness or Illusion?

Self-Awareness or Illusion?

Solving the “Hard Problem”