Improved Cotton Press, Boring Machines at the Mont Cenis Tunnel
Perpetual Motion - January 14, 1871
Improved Hitching Post
Merriman's Improved Water-Proof Dress and Life Preserver
Object Teaching and Science
The New Commissioner of Patents
The Proposed Fair of the American Institute in 1876
The Failure of the Hon. Oakes Ames
Railroad Progress in the Southern States
Queries- January 14, 1871
We present herewith a series of inquiries embracing a variety of topics of greater or less general interest. The questions are simple, it is true, but we prefer to elicit practical answers from our readers.
On Blood and Its Uses
Answers to Correspondents- January 14, 1871
Recent American and Foreign Patents- January 14, 1871
Under this heading we shall publish weekly notes of some of the more prominent home and foreign patents.
Official List of Patents- January 14, 1871
Issued by the U. S. Patent Office. For the Week Ending Jan. 3, 1871. Reported Officially for the Scientific American.
Correspondence- January 14, 1871
New Books and Publications- January 14, 1871
Business and Personal- January 14, 1871