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Cost of the New Aqueduct

The Panama Canal Bubble

An Improved Guide for Sewing Machines

A Hemming Attachment for Sewing Machines

A Solar Attachment for Transit Instruments

An Improved Bridle for Horses

An Improved Folding Scaffold Bracket

Hot Water to Drive Cattle from Tracks

An Improved Garden Implement

The New Croton Aqueduct--the Harlem River Siphon and Pumping Apparatus

Home Made Grills and Gratings

The McLeod Pneumatic System of Heating, Ventilating and Cooling, and Improved Subway Construction

The Gramophone

New York City Aqueduct--Its Engineering Features and Design

Scientific American Building Edition- July 19, 1890


  • Reviews

    New Books and Publications- July 19, 1890

  • Departments

    Recently Patented Inventions- July 19, 1890

  • Notes and Queries- July 19, 1890

  • To Inventors- July 19, 1890

  • Index of Inventions- July 19, 1890

  • Business and Personal- July 19, 1890

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