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Device for Steaming Rovings, Pressure in Steam Boilers, and more

The Leclanche Battery

The Reptiles at the Zoological Gardens

From Naturalists' Note Book.

Science and the Public Health

Rain and Rain Doctors

Curious Ice Formations

Improved Packing for the Pistons of Steam Engines

Manufacture of the Points of Needles and Pins by Electricity

By C. Wideumann

On the Nature of the Interplanetary Medium

By Vander Weyde

Nature of Design Patents

The Careless Use of Lucifer Matches

Progress in Mechanical and Engineering Science and Invention in 1869

The Mild Winter

On Cotton Seed and Cotton Seed Oil

By C. Widemann

Scientific Intelligence- January 15, 1870

Michael Faraday

Recent American and Foreign Patents—January 15, 1870

Under this heading we shall publish weekly notes of some of the more prominent home and foreign patents.

United States Circuit Court—Southern District before Judge Blatchford


Answers to Correspondents- January 15, 1870

Official List of Patents- January 15, 1870

Issued by the United States Patent Office. For the week ending Jan. 11, 1870. Reported Officially for the Scientific American.


  • Letters

    Correspondence- January 15, 1870

  • Recommended

    New Books and Publications- January 15, 1870

  • Departments

    Business and Personal- January 15, 1870

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January 22, 1870

Of Shamrocks and Science

Happy St. Patrick’s Day