Volume 24, Issue 3
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Features
Stow's Non-corroding Water and Gas Pipe
Improved Cotton Press, Boring Machines at the Mont Cenis Tunnel
Talking Machines
Paint-Pot Holder
Improved Hitching Post
Perpetual Motion - January 14, 1871
Number VII.
Anti-Snoring Device
Merriman's Improved Water-Proof Dress and Life Preserver
Object Teaching and Science
The Proposed Fair of the American Institute in 1876
The New Commissioner of Patents
Mechanical Power
Social Science
Railroad Progress in the Southern States
The Failure of the Hon. Oakes Ames
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
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.
Answers to Correspondents- January 14, 1871
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.