This work was financed by the Bureau of Com- 

 mercial Fisheries under Contract 14-17-0007- 

 221, with funds made available under the Act 

 of July 1, 1954 (68 Stat. 375), commonly known 

 as the Saltonstall-Kennedy Act. Additional sup- 

 port was received from the Atomic Energy Com- 

 mission through Contract AT(ll-l)-34, Project 

 99. The work formed part of the Scripps Tuna 

 Oceanography Research Program of the Institute 

 of Marine Resources of the University of 

 California. 



