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Features

New Type of Locomotive Driving Wheels

The World's Fair of 1892--Chicago Favored by the House of Representatives

Position of the Planets for March

Leprosy

An Improved Magazine Hand Camera

The Sisal Plant at Nassau, N. P.

An Improved Revolving House Hoe

A Removable Siding for Bedsteads

An Improved Rope Clamp and Thimble

An Improved Cultivator

An Improved Tool Cutter

An Improved Tape Measure

An Improved Game Apparatus

An Improved Lamp

Railway Practice in America

The Scientific Use of the Phonograph

By Geo. M. Hopkins

Departments

  • From the Editor

    To Inventors- March 8, 1890

  • Letters

    Correspondence- March 8, 1890

  • Recommended

    New Books and Publications- March 8, 1890

  • Departments

    Recently Patented Inventions- March 8, 1890

  • Business and Personal- March 8, 1890

  • Notes and Queries- March 8, 1890

  • Index of Inventions- March 8, 1890

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March 08, 1890

Beyond XX and XY

Biology. Identity. Equality.

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