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Engines of the Italian Ram Etna

Comets and Asteroids of 1884

Personal Knowledge - March 21, 1885

Steering the Alaska

Safety Gas Burner

A New Safety Coupler

The Illustrator's Microscope

An Improved Friction Clutch

Photographing the Larynx

Automatic Cut-Off for Cisterns

Improvement in Running-Part of Baby Carriage

An Improved Cuff Fastener

Improved Sleeve or Collar Button

Practical Studies of Man's Locomotion

A Boiler Explosion at Cincinnati, Ohio

Miscellaneous Inventions - March 21, 1885

Agricultural Inventions - March 21, 1885

Engineering Inventions - March 21, 1885


  • Departments

    Business and Personal - March 21, 1885

  • Notes and Queries - March 21, 1885

  • Index of Inventions - March 21, 1885

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March 21, 1885

Beyond XX and XY

Beyond XX and XY

Biology. Identity. Equality.