Science
-
In the article on "Natural Resources Problems in Japan," by Lt. Col. Hubert G. Schenek (Science, October 8, pp. 367-372), the last sentence of paragraph 2, page 369, should read: "Production has been increased from the 1945 level of 4,000,000,000-5,000,000,000 pounds to more than 7,000,000,000 pounds which is about as much as the present fishing area can support." In the article the pounds were erroneously given in millions instead of billions.
-
The rate of the frog or guinea pig heart preparation was not significantly influenced by the H-ion concentration when this was kept within limits which allowed the heart to continue beating. The theory that the H-ion concentration is intimately concerned with the origination of the heart beat is not supported by the results of this investigation.