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Features

The Engines of the St. Louis and St. Paul

Our Jubilee Number

The Artistic Element in Engineering Works

The International Geological Congress at St. Petersburg, August, 1897

Cave Exploration in the Eastern United States

By Henry C. Mercer

Curtain or Shade Fixture

Improved Washing Machine

Preparing Old Woolen Rags for Shoddy Clothing

A Pneumatic Inkstand

Accurate Measurements

The Matabeles and Mashonas

By P. Lemosof

A New Steady Rest for Engine Lathes

An Automatic Duplicator

To Inventors - July 18, 1896

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    Recently Patented Inventions - July 18, 1896

  • Business and Personal - July 18, 1896

  • Index of Inventions - July 18, 1896

  • Notes and Queries - July 18, 1896

  • Patents - July 18, 1896

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July 18, 1896

Beyond XX and XY

Biology. Identity. Equality.

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