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Features

The Columbian Celebration of October, 1892

A Fan Attachment for Rocking Chairs

An Improved Gang Sawmill

Apparatus for Manufacturing and Lifting Blocks of Beton at the Port of Bilbao

The Santa Maria

The Probably Best Authenticated Picture of Columbus

A Four-Foot Water Valve

The Canadian Plan for Utilizing the Power of Niagara Falls

An Interesting Toy

To Inventors - October 15, 1892

Departments

  • Letters

    Correspondence- October 15, 1892

  • Departments

    Recently Patented Inventions- October 15, 1892

  • Index of Inventions- October 15, 1892

  • Notes and Queries- October 15, 1892

  • Business and Personal- October 15, 1892

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October 15, 1892

Beyond XX and XY

Biology. Identity. Equality.