Volume 22, Issue 7
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Features
Flooring Clamp
Lapidary Work
Translated from the French.
Scientific Intelligence
What George Stephenson Accomplished
How to Obtain a Fine Patina on Bronze Statues
Translated for the Scientific American from the Polytechnic Journal.
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
Technical Education in the United States--The Sheffield Scientifc School of Yale College
Report of the Commissioner of Patents for the Year 1869
The Attainment of Beauty in Commonplace Handiwork
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.