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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

Editorial Summary- July 9, 1870

Sirups for Soda Water

Gas as Fuel

The Progress of Chemistry in 1870

Steam Road Rolling

Progress of Invention Abroad

Hydrophobia and Dog Muzzling

Scientific Intelligence- July 9, 1870

The Stevens Institute of Technology

The New York Dock Commission--The Principal Plans Submitted

City Railroad Cars

Answers to Correspondents- July 9, 1870

Recent American and Foreign Patents- July 9, 1870

Official List of Patents- July 9, 1870

Applications for the Extension 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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