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CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



pace with the sun on its way north. When we were anchored 

 at Tagus Cove on the west side of Albemarle Island during 

 portions of the months of March and April, a decrease of 14° 

 in the temperature of the water was noticed in nineteen days. 

 The northern islands of the group were visited but once, and 

 that for a period of eleven days. During this time the water 

 was on the average 6.5° warmer than at the southern islands 

 for the corresponding period just preceding. The difference 

 was due to the fact that the northern islands lie in the lower 

 limits of the Panama current. The following table shows the 

 continued rise in the temperature of the water for some dis- 

 tance north of this part of the Galapagos. These observations 

 were taken on the homeward voyage at 12 m. on the dates 

 mentioned in the table, this being the only time during the 

 day when we knew our position with any degree of accuracy. 

 Of course many of these observations have no bearing on the 

 climatic conditions in the Galapagos Islands, but they may 

 nevertheless be of interest. 



Surface Temperatures, 1906 



