The Leclanche Battery
Science and the Public Health
The Reptiles at the Zoological Gardens
From Naturalists' Note Book.
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
On the Nature of the Interplanetary Medium
Nature of Design Patents
The Careless Use of Lucifer Matches
Progress in Mechanical and Engineering Science and Invention in 1869
On Cotton Seed and Cotton Seed Oil
The Mild Winter
Scientific Intelligence- January 15, 1870
Answers to Correspondents- January 15, 1870
United States Circuit Court—Southern District before Judge Blatchford
RIVAL SEWING MACHINES—INJUNCTION.
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.
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.
Correspondence- January 15, 1870
New Books and Publications- January 15, 1870
Business and Personal- January 15, 1870