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Features

The City of Aberdeen, a Great Lumber Center, Washington Territory

Secondary Battery Sub-Stations

The American Association for the Advancement of Science

Progress of Ocean Steam Navigation

Report on Explosions in the Electric Subways

An Improved Lens

An Improved Piston Rod Packing

An Improved Safety Harness

An Improved Thill Coupling Jack

An Improved Hen Coop

The Scientific Lantern

An Improved Steel Belt Lacing

The White Star Liner Teutonic

An Improved Tile Ditcher

The Electric Rolling Bridges of the Paris Exposition

Departments

  • Departments

    Business and Personal- August 24, 1889

  • Notes and Queries- August 24, 1889

  • Recently Patented Inventions- August 24, 1889

  • To Inventors- August 24, 1889

  • Index of Inventions- August 24, 1889

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August 24, 1889

Beyond XX and XY

Biology. Identity. Equality.