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Great Guns and Armor Plate

The Generation of Thunder Storms

Paterson's Centennial

A Convenient Tool for Pipe Fitters

A Low Water Alarm for Boilers

An Improved Rail Joint

Underground Locomotive

A Convenient Camera

By Geo. M. Hopkins

The Scientific American Dynamo

The Central Screw Steamer Le Louvre

The Sewerage Systems of Sydney, Australia

The American Black Wolf


  • Recommended

    New Books and Publications- July 16, 1892

  • Departments

    Recently Patented Inventions- July 16, 1892

  • Index of Inventions- July 16, 1892

  • Notes and Queries- July 16, 1892

  • Business and Personal- July 16, 1892

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