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A Great Pacific Coast Shipbuilding Plant

A New Scholarship at Sibley College

Nitric Acid Bacteria

The Forty-First Annual Meeting of the American Association for the Advancement of Science

Position of the Planets in July

A Proposed World's Fair Tower

An Improvement in Car Couplers

Prof. Thurston's Arc Lamp Improvement

A Light and Durable Fence

A Novel Top

Photographic Notes- July 2, 1892

Manufacture of Porous Cups for Electric Batteries

A Weird Spectacle


  • Letters

    Correspondence- July 2, 1892

  • Recommended

    New Books and Publications- July 2, 1892

  • Departments

    Recently Patented Inventions- July 2, 1892

  • Business and Personal- July 2, 1892

  • Index of Inventions- July 2, 1892

  • Notes and Queries- July 2, 1892

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July 02, 1892

20% Sitewide for President's Day