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Features

The Use of Natural Gas at Pittsburg

The Telephone Controversy

The La Guayra and Caracas Railway.--A Reclamation

Photographic Notes - February 27, 1886

Buggy Top Support

An Improved Bob-Sleigh

Wood Sawing Machine

An Improved Folding Bed

A Nitro-Glycerine Shell

Distribution of Energy by Transformers

The Clyde Locomotive Works

An Improved Saw

A New Screw Propeller

Automatic Damper Regulator

Miscellaneous Inventions - February 27, 1886

Agricultural Inventions - February 27, 1886

Engineering Inventions - February 27, 1886

Departments

  • Letters

    Correspondence - February 27, 1886

  • Recommended

    New Books and Publications - February 27, 1886

  • Departments

    Business and Personal - February 27, 1886

  • Notes and Queries - February 27, 1886

  • Index of Inventions - February 27, 1886

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February 27, 1886

Beyond XX and XY

Beyond XX and XY

Biology. Identity. Equality.