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Annual Convention of the American Society of Civil Engineers

Why does Solid Iron Float on Molten Iron?

Domesticating Camphor Trees in the United States

New Emery Wheel Dresser

A Car Receiver for Bills of Lading, Etc.

A Device to Hold Bags Open for Filling

Aluminum Works in Switzerland

An Improved Water Gauge

Photographic Notes- June 6, 1891

Great Tower of the City Hall, Philadelphia--Total Height, 547 Feet

The U. S. Warship Charleston Pursues a Chilean Rebel Ship

Remarkable Naval Combat--A Steel Cruiser Sunk by Torpedo Boats

New Taper Attachment for Lathes

Mending a Big Shaft at Sea


  • Letters

    Correspondence- June 6, 1891

  • Departments

    Recently Patented Inventions- June 6, 1891

  • Business and Personal- June 6, 1891

  • Notes and Queries- June 6, 1891

  • Index of Inventions- June 6, 1891

  • To Inventors- June 6, 1891

  • Patents- June 6, 1891

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