on the basis that these fish were of the same size as those taken nn the 

 third cruise) and they were taken in writers viheve the water color was 

 bad and the differences between the temperatures at the siorfacc and at 

 the 50, 100, and 200 meter levels were c^cat. During the latter half of 

 the operations the water color was generally favor^.blc, the difference 

 between the water temperatiores at the surface and at lower levels was 

 small, and the oceanor;raphic conditions resembled those found on the 

 winter tuna grounds (see the appended table of the vertical distribution 

 of temperatures on winter tuna grounds). !7hat was attempterl was to carry 

 on operations covering the end of the summer albacore and the beginning 

 of the winter albacore as well as both fishing grounds (north and south) . 



There follows an example of the vertical distribution of water 

 temperatures on the winter albacore (-..rounds (taken from observations made 

 aboard the Karaui Maru in 1937 and 1938). 



/ Four graphs of the distribution of surface water temperatures have 

 been omitted here because the curves were n^^-t clearly identified. _/ 



U2 



