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Flooring Clamp

The Ransom Siphon Condenser

How to Obtain a Fine Patina on Bronze Statues

Translated for the Scientific American from the Polytechnic Journal.

What George Stephenson Accomplished

Scientific Intelligence

Lapidary Work

Translated from the French.

Microscopical Examination of Milk under Certain Conditions

READ BEFORE THE MANCHESTER LITERARY AND PHILOSOPHICAL SOCIETY, NOV. 30, 1869, BY J. B. DANCER, F.R.A.S.

The Hoosac Tunnel

French Asphalt Roads, and American Attempts to Imitate them

New Paint

By C. Widemann

Report of the Commissioner of Patents for the Year 1869

The Attainment of Beauty in Commonplace Handiwork

Technical Education in the United States--The Sheffield Scientifc School of Yale College

Recent American and Foreign Patents - February 12, 1870

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

Official List of Patents- February 12, 1870

Issued by the United States Patent Office. FOR THE WEEK ENDING FEB. 1, 1870. Reported Officially for the Scientific American.

Applications for Extension of Patents- February 12, 1870

Departments

  • Letters

    Correspondence- February 12, 1870

  • Departments

    Business and Personal- February 12, 1870

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February 12, 1870

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