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Holmes' New Barrel Machinery

To Our Friends

Have a Specialty

The "Science" of Spiritualism

The Example of France

"Ourselves, as Others See Us."

A Problem Relating to the Sphere

Scientific and Practical Information

Combined Knife and Pepper Box

A Self-Corking Bottle

The Pernot Rotary Puddler

The Tulip Tree

The Sardine Industry

Astronomical Notes - February 6, 1875

Recent American and Foreign Patents - February 6 1875

Communications Received - February 6, 1875

Canadian Patents - February 6, 1875


  • From the Editor

    Correspondence - February 6, 1875

  • Departments

    Notes and Queries - February 6, 1875

  • Business and Personal - February 6, 1875

  • Index of Inventions - February 6, 1875

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Self-Awareness or Illusion?

Self-Awareness or Illusion?

Solving the “Hard Problem”