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Features

New Elevated Cable Street Railway, Jersey City

The First Electrical Execution

Wire and Electricity

Photographic Notes- August 16, 1890

New form of Millstone Pick

Novel Blind Stop

A New Car Starter

An Improved Educational Appliance

New Tubular Packing for Steam Condenser Tubes

The Giffard Gun

The Scientific Use of the Phonograph

By Geo. M. Hopkins

New Umbrella or Parasol Exhibitor

Torpedo Target Practice at Kiel

The Garter Snake

The Scientific American Publications for 1890

To Business Men

Now Ready

The Scientific American Supplement- August 16, 1890

Building Edition- August 16, 1890

The Scientific American Established 1846

Departments

  • Letters

    Correspondence- August 16, 1890

  • Departments

    Business and Personal- August 16, 1890

  • To Inventors- August 16, 1890

  • Index of Inventions- August 16, 1890

  • Recently Patented Inventions- August 16, 1890

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August 16, 1890

Beyond XX and XY

Biology. Identity. Equality.