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