SEAL LIFE ON THE PRIBILOF ISLANDS. 



101 



review, or photographing the rookeries from overhead, both of which 

 proceedings are impracticable. 



The euumeratioii of cows on the Lagoon, made July 10, was by harems, 

 as follows : 



[The numbers indicate breeding females in each harem.] 



Total, 1,264. 



The enumeration of cows on Ketavie, made July 8 to 10, beginning 

 at the south, was as follows : 



[The numbers indicate breeding females in each hnrem.] 



Total, 2,640. 



Note. — The figures in parentheses refer to the number of bulls with the group of cows. In those 

 cases several harems were of course consolidated. 



Mr. Townsend made an enumeration of a portion of Lukannon rookery 

 on July 12, and found 1,940 cows. The portion of this rookery on which 

 he made no ennmeration is sixteen one-hnndredtlis of the total area of 

 Ketavie and Lukannon, and it is necessary, therefore, to add 732 cows 

 in making up the total for the two rookeries, which will then be 5,312 

 cows. 



On July 11 I counted the cows on that portion of Tolstoi rookery 

 under the clifl's at the south end, as follows : 



[The numbers indicate breeding females in each harem.] 



Total, 1,624. 



This portion of Tolstoi rookery is only a small part of the whole area, 

 and the enumeration is cbietly valuable as a basis for ascertaining the 

 average size of harems and for forming an estimate for the whole area. 



