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The Recent Meeting of the American Association for the Advancement of Science

Eikonogen-A New Universal Developer for Photographic Dry Plates and Bromide Paper

An Improved Fruit Picker

A Combined Carpenters Rule, Calipers, Etc

An Improved Valve Head for Blowing Engines

An Improved Steam Boiler

An Improved Lock Joint for Beams

An Improved Artificial Leg

An Improved Blacking Box

An Improved Music Leaf Turner

An Improved Pen Holder

An Improved Two-Wheeled Vehicle

The Brooklyn Navy Yard

Tangent Galvanometer

The Paris Exhibition

The First Gallery of the Eiffel Tower


  • Letters

    Correspondence- September 21, 1893

  • Departments

    Recently Patented Inventions- September 21, 1893

  • Business and Personal- September 21, 1893

  • Index of Inventions- September 21, 1893

  • Notes and Queries- September 21, 1893

  • To Inventors- September 21, 1893

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September 21, 1889

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