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Features

A Great Pacific Coast Shipbuilding Plant

A New Scholarship at Sibley College

Nitric Acid Bacteria

Position of the Planets in July

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

A Proposed World's Fair Tower

A Light and Durable Fence

A Novel Top

Prof. Thurston's Arc Lamp Improvement

An Improvement in Car Couplers

Photographic Notes- July 2, 1892

Manufacture of Porous Cups for Electric Batteries

A Weird Spectacle

Departments

  • 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

  • Notes and Queries- July 2, 1892

  • Index of Inventions- July 2, 1892

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July 02, 1892

Help Us Reforest the Mississippi River Valley

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