212 
Note: These counts show clearly the gradual development of rookery population during the 
The cows begin to arrive about the 12th of June. 
reached about July 15, from which time on there is a gradual decrease'of population due to the 
breeding season. 
THE FUR SEALS OF 
THE PRIBILOF ISLANDS, 
Daily counts of cows.) 
lengthening absence of the cows on their food excursions. 
The maximum of population is 
Date. 
June 12 
duly 1.. 
Amphitheater of Iitovi. 
Cows Cows 
present. Dates ' present. 
| Record of harems—Continued. 
0: | Daly 1B sass cd cn satansceetocccensence 46 
Ol °° (Qbistcskaeeige taeeemesceeaaeeeds 53 
2 
3 Lukanin rookery. 
‘ DUNG 12 oscisnaneenteaasSeees sweeesed 1 
spe ; 
7 15. 5 
é 16. eet 6 
23 ie ae 11 
37 18. : 1 
45 20. e 
56 21. : 37 
76 re : 52 
et a 
37 ie 
168 oe 131 
210 oa 176 
246 |, 27. 207 
290 || Sa 257 
362 || 29. % = 
414 || 30. 
as July 1. a eee eheas 
2. : 880 
550 3 
585 o : 939 
2587 . is 1, 088 
660 S ‘| 1,197 
6. = 1, 264 
703 , 
ioe oe - : ri 371 
654. - : , 931 
ee 9. 21,541 
703 10. 1, 680 
{ 11. 1, 755 
678 12 , 
698 . ae a at Og 
566 i : 1, 736 
556 aE 1, 841 
429 is. eng 
528 7 827 
416 | 7 325 
469 | is 328 
465 19 228 
426 30 are 210 
463 ae ae ald 
406 33 : 215 
304 55 259 
414 24 e 212 
427 oe. : 196 
375 o .- 186 
26... oe 148 
27... 157 
28. sez 177 
1 29.4 149 
3 30... é 127 
10 6) Seo rc, eee sian 124 
35 
1 Weather clear; no storms or surf, except one day when rain fell, causing a larger number of cows to take to the 
water and making it difficult to distinguish those present from the rocks. 
2Rain. 
3After July 14 it became impossible, on account of the scattering of the cows, to continue the count for the entire 
roukery without too great loss of time, and so a section of 18 harems was singled out and the count continued on it. 
