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A Solar Chronometer

The Centennial Buildings

Some New Volcano Revelations

Progress of Rapid City Transit

The Education of Sight

Stealing Brains

Scientific and Practical Information - September 11, 1875

Traube's Artificial Cells

Floating Fire Engines

Boring Bits

Improved Cooking Chamber

Improved Ornamental Molding Machine


Cochliostema Jacobianum

Theories of the Earth's Interior

Decisions of the Courts - September 11, 1875

Recent American and Foreign Patents - September 11, 1875

Communications Received - September 11, 1875

Canadian Patents - September 11, 1875


  • Letters

    Correspondence - September 11, 1875

  • Departments

    Notes and Queries - September 11, 1875

  • Business and Personal - September 11, 1875

  • Index of Inventions - September 11, 1875

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