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Launching of the Great Caisson for the Brooklyn Terminus of the East River Bridge

The Disposal of Sewage

By John Darby

What is Energy?

The Butterfly

By Edward C. H. Day

What Inventors Say

Adulteration of Paints

By Henry E. Colton

Sirups for Soda Water

Editorial Summary- July 9, 1870

Gas as Fuel

The Progress of Chemistry in 1870

Steam Road Rolling

Hydrophobia and Dog Muzzling

The Stevens Institute of Technology

Scientific Intelligence- July 9, 1870

Progress of Invention Abroad

City Railroad Cars

The New York Dock Commission--The Principal Plans Submitted

Answers to Correspondents- July 9, 1870

Recent American and Foreign Patents- July 9, 1870

Applications for the Extension of Patents- July 9, 1870


  • Official List of Patents- July 9, 1870

  • Letters

    Correspondence- July 9, 1870

  • Recommended

    New Books and Publications- July 9, 1870

  • Departments

    Business and Personal- July 9, 1870

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July 09, 1870