IQQ u. S. BUREAU OP FISHERIES 



Complete census of fur seals, Pribilof Islands, as of August 10, 1925— Continued 



Class 



St. Paul 



6-year-old males, estimated: 



5-year-old males, Aug. 10, 1924. _. 

 5-year-old males killed, fall, 1924. 



5-year-old males, end ef 1924 



Natural mortality, 20 per cent.. 



6-year-old males, beginning 1925. 

 6-year-old males killed, 1925 



6-year-old males, Aug. 10, 1925. 



Surplus bulls, 7 years and over, estimated: 



6-year-old males, Aug. 10, 1924 



6-year-old males killed, fall, 1924. 



6-year-old males, end of 1924 



Natural mortality, 20 per cent... 



7-year-old males, beginning 1925. 

 7-year-old males killed, 1925 



7-year-old males, Aug. 10, 1925. 



Surplus bulls, Aug. 10, 1924.... 

 Natural mortality, 30 per cent. 



Remaining surplus for 1925 



4, 801 



4,801 

 960 



3,841 



3,841 



7,880 

 1,576 



6,304 

 2 



St. 

 George 



331 

 66 



265 

 1 



264 



6, 302 



572 



Breeding bulls of 1924 



Natural mortality, 30 per cent. 



1924 bulls remaining, 1925 



Breeding bulls, 1925 



1924 bulls remaining, deducted . 



Increment of new bulls in 1925. 



7-year-old males computed for 1925. 

 Surplus bulls computed for 1925 — 



Total theoretical surplus bull stock, 1925... 

 New increment of breeding bulls deducted. 



Surplus bulls in 1925 -r—z V~a 



50 per cent deducted for losses due to fighting, natural causes, and 

 errors in loss percentage in previous years 



Surplus bulls, Aug. 10, 1925 ■ 



Pups. 



Cows 



Harem bulls 



Idle bulls 



Yearling females.. 

 Yearling males. .. 

 2-year-old females. 

 2- year-old males. . 

 3-year-old males.. 

 4-year-old males. . 

 5-year-old males .. 

 6-year-old males .. 

 Surplus bulls 



Total, 1925. 



1,336 



3,502 

 1,051 



2,451 



3,386 

 2,451 



6,302 

 1,336 



7,638 

 935 



6,703 

 3,351 



3. 352 



Total, 1924. 



Numerical increase, 1925. 

 Per cent increase, 1925... 



184, 451 



184,451 



3,103 



283 



47, 445 



43, 124 



42, 658 



37, 170 



20, 002 



16, 817 



15. 046 



3,841 



3,352 



601, 743 



487 



Total 



135 

 41 



404 

 121 



451 

 283 



168 



487 

 94 



581 

 168 



413 

 207 



206 



41, 639 



41, 639 



423 



28 

 9,864 

 8,967 

 7,128 

 6,345 

 1,183 

 1,875 

 1,746 

 264 

 206 



121, 307 



o 



