PLATE 25 



Fig. 40. Seasonal variation iu surface temperatures baseil on observations 

 made approximately eight miles west of South Corouado Island in sections 40^, 

 40.-„ 40„, 41„ 41,„ and 41„. 



Fig. 41. Seasonal variation in surface temperature based on observations 

 made oS Coronado Beach in section SSj. 



Fig. 42. Approximate average seasonal variation in the "normal" surface 

 temperature of the North Paeitic Ocean at 32° 30' N. 



Fig. 43. Seasonal variation in surface salinity, based on observations made 

 apjtroximately eight miles west of South Coronado Island in sections 40„ 40;, 

 40„, 41., 4I5, and 41 „. 



Fig. 44. Seasonal variation in surface salinity, based on observations made 

 off Coronado Beach in seetioa 38^. 



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