140 U. S, BUREAU OF FISHERIES 



Complete census of fur seals, PriUlof Islands, as of August 10, i 933— Continued 



6-vear-old males, estimated: 



5-year-old males, Aug. 10, 1922.. 

 5-year-old males killed fall 1922. 



5-year-old males end of 1922 



Natural mortality, 20 per cent. 



6-year-old males beginning 1923. 

 6-year-old males killed 1923 



6-year-old males, Aug. 10, 1923. 



St. Paul St. George Total 



5,755 



5, 755 

 1,151 



4,604 



1 



4,603 



Surplus bulls, 7 years and over, estimated: 



6-year-old males, Aug. 10, 1922... 



6-year-old males killed fall 1922 



6-year-old males end of 1922 



Natural mortality, 20 per cent.. 



7-year-old males beginning 1923. 



Surplus bulls, Aug. 10, 1922.. 

 Surplus bulls killed fall 1922. 



Surplus bulls end of 1922 



Natural mortality, 30 per cent . 



Remaining surplus for 1923 



Breeding bulls of 1922... 



Natural mortality, 30 per cent. 



1922 bulls remaining 1923 



Bjeeding bulls 1923 



1922 bulls remaining, deducted. 



Increment of new bulls 1923 



7-year-old males computed for 1923. 

 Surplus bulls computed for 1923. .. 



Total theoretical surplus bull stock 1923. 

 7-year-old males killed in 1923 



Total surplus in 1923 --- 



New increment of breeding bulls deducted. 



Surplus bulls in 1923 



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

 and errors in loss percentage in previous years 



Surplus bulls, Aug. 10, 1923 .- 



RECAPITULATION 



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, 1923. 



Tot:^l, 1922 



Numerical increase, 1923. 

 Per cent increa.se, 1923... 



3,069 



3,069 

 614 



2,455 



2,196 



2,196 

 659 



1,537 



3,677 

 1,103 



2,574 



3,354 

 2,574 



780 



2,455 

 1,537 



3,992 

 1 



3,991 

 780 



3,211 

 1,605 



1,606 



560, 509 



325 



325 

 65 



260 



702 



702 

 140 



562 



150 

 1 



149 



45 



393 

 118 



370 

 275 



95 



562 

 104 



666 

 95 



571 

 286 



285 



92, 499 



o 



