This work was financed by the Bureau of Comnnercial 

 Fisheries under Contract Nos. 14-19-008-9354, 

 14-17-0007-1, 14-17-0007-28, 14-17-0007-70 and 

 14-17-0007-139, with funds made available under the 

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

 as the Saltonstall-Kennedy Act. Additional support 

 was received from the Atomic Energy Commission 

 through Contract AT(ll.l)-34, Project 99. The work 

 formed part of the Scripps Tuna Oceanography Re- 

 search Program of the Institute of Marine Resources, 

 Scripps Institution of Oceanography. 



