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On the Theory of the Luminosity of Flames

Improved Adjustable-Jaw Vise

Explosive Compounds for Engineering Purposes

Obituary-Luther Atwood

Progress of the Velocipede

Write Legibly and Intelligently

Gross' Patent Combined Letter Opener

Small-Pox and Vaccination

Ventilation in Buildings

The Natural Highways of Travel

The Scientist, Inventor, and Mechanic

The Preservation of Timber

Beet Root Sugar

Taste and Smell—A New Theory

Manufacturing, Mining, and Railroad Items

Applications for the Extension of Patents

Editorial Summary

Recent American and Foreign Patents

New Publications

Official List of Patents

Issued by the United States Patent Office

Patent Offices

European Patents


  • Departments

    Answers to Correspondence

  • Business and Personal

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Self-Awareness or Illusion?

Self-Awareness or Illusion?

Solving the “Hard Problem”