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The New Croton Dam

Of Interest to Electricians

The Nicaragua Canal

A Scraper for Sawmill Carriages

An Improved Balanced Slide Valve

Machine for Laying Drainage Pipes

An Improved Safety Valve and Muffler

Homogenetic Enumeration

Sterilization of Water by Heat

Steam Tree-Felling and Cross-Cutting Machinery

Remarkable Experiments with Liquefied Air and Liquefied Oxygen and Other Liquefied Gases


  • Letters

    Correspondence- July 9, 1892

  • Recommended

    New Books and Publications- July 9, 1892

  • Departments

    Recently Patented Inventions- July 9, 1892

  • Index of Inventions- July 9, 1892

  • Business and Personal- July 9, 1892

  • Notes and Queries- July 9, 1892

  • To Inventors- July 9, 1892

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