Scientific American Magazine
Volume 22, Issue 16You are currently logged out. Please sign in to download the issue PDF.
Features
Patent Right and Copyright
Combined Safety Valve and Low-Water Alarm
Fur Seal Fishery in Alaska
Comparison of the Refrigerative Effects of the Carre Apparatus and Common Ice
Deformed Feet and Shoes
The Narwhal or Sea Unicorn
Barnacles
Wormood's Revolving Pay Box
Scientific Intelligence - April 16, 1870
Vertical Multiplier
Screw Piles
Conklin's Detachable Lip for Bowls, Basins, Etc.
Telo-Dynamic Cables
Boiler Explosions
International Exhibition of 1871, in London
Power and Efficiency of Screws
Charlatans and Charlatanism
Experimental Test of the Laws of the Deflection of Beams
Report of the New York Commissioners of Fisheries
United States Circuit Court at New Orleans
Editorial Summary- April 16, 1870
Patent Office Decision- April 16, 1870
Recent American and Foreign Patents- April 16, 1870
Answers to Correspondents- April 16, 1870
Official List of Patents- April 16, 1870
Departments
Correspondence- April 16, 1870
New Books and Publications- April 16, 1870
Business and Personal- April 16, 1870
