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Professor Louis Agassiz

Eccentric Spring Vise

Sheppard's Cotton Tie

Hot Water Heater for Greenhouses

Encke's Comet

From the Boston Journal of Chemistry.

By C. A. Young

Goux's Improvements in Earth Closets

Latent Heat of Vapors and Gases

By P. H. Vander Weyde

Bridgman's Thill Coupling

Meteorology, Its Capabilities and Its Future

Education of the Ear

Artificial Stone and Fireproof Buildings

Timely Suggestions

To City Subscribers

Science Record for 1872

Scientific Intelligence - January 1, 1872

Patent Decision - January 1, 1872

The Last Six Months of Chemistry

Recent American and Foreign Patents

Applications for Extension of Patents

Official List of Patents

Issued by the U. S. Patent Office for the Week Ending December 19 , 1871. Reported Officially for the Scientific American.


  • From the Editor

    Answers to Correspondents

  • Letters

    Correspondence - January 1, 1872

  • Departments

    Business and Personal - January 1, 1872

  • Notes and Queries - January 1, 1872

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