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The United States Drilling Scow, East River

The Captive Balloon at Coney Island

The Telephone as a Lightning Indicator

Molecular Chemistry.--No. 4

Peculiar Steam Whistling

An Improved Tug Coupling

A New Water Meter

Recent American Patents

Improved Washbasin Valves

Improved Water Wheel

Recent Mechanical Inventions

Railway Notes

The Geysers of the Azores

New Milling Attachment for Lathes

New Propelling Apparatus

Miscellaneous Inventions

New Sewer Gas Stopper

New Agricultural Inventions

Plowing by Electricity

Communications Received - July 19, 1879


  • Departments

    Business and Personal - July 19, 1879

  • Notes and Queries - July 19, 1879

  • New Books and Publications - July 19, 1879

  • Index - July 19, 1879

  • Patents - July 19, 1879

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