ALASKA FISHERY AND FUR-SEAL INDUSTRIES 167 
Complete computation of fur seals, Pribilof Islands, as of August 10, 1938 
| ————____nee $$ 


















Class St. Paul | St. George 
Island island | Total 
(ose GSAT (00) oe Sa SS eS 501, 264 
Breeding cows, 3 years old and over, by inference_--_-_____________- 501, 264 ee ae ame re 
Per snadiiated eee =e ec 10, 720 9) 449 lee 
armudliswestimated =22— 5 =2-2- so se 5252s e221 eee eee 1, 787 "338 pias 
Yearlings, ae and female, estimated: 
imerrinleswDORNT LOS (sess ae we 2 So 8 ee eee 232, 067 
Sivauiral mortality, 45 percent... -------.___..----__2-1_1.2---- 104, 430 2 oe ee a 
paenrlineomsales VAUIe. 1051938. 2. =... -----2s-22---2.<--22--- 127, 637 28, 833 156. 470 
RBIS ae itil WOE ( Eo ee rr 232, 067 Soule lip iE 
Pratralemoncality oo mercente. 228. = 28). 2 8 ae 116, 034 26, at Ey ats 
Yearling males beginning 1938____........-.....____-__------ 116, 033 
Vearling males-icilied in 1938ze-__..__._________._____-__._.__- canlerees ae 142, 24s 
Mearlinenmaless aur .lO) 10382 — 2-8 2-22 elt ee 116, 020 26, 212 142. 239 
2-year-olds, male and female. estimated: i 
Sean Mosonttles may mn OSihe ———- ---=— one n enon 118, 186 26, 697 144, 883 
Naturalimortality, 15 percent. —-----.-.---.-__-..._.-.--+------ 17, 728 4,005 21. 733 
2-year-old females, Aug. 10, 1938_..------ oe PEt Boel ar 100, 458 22, 692 123, 150 
Yearling males, Aug. 10, 1937 1__----------_--_-__--_____-----1 =: 107, 437 24, 270 131, 707 
INahuEalrnmortabliyenlso percent==—.---.---_.-----=--=-22-2-=--=5 18, 801 4, 247 23, 048 
2-vear-ola males! beginning 1938. seve. tots see Joist At 88, 636 20, 023 
2-year-old males killed in 1938.......-...-..----.-------.---- 1,431 iaosyenol li con 
2-year-old males, Aug. 10, 1938__---------.---------------_-- 87, 205 19, 798 107, 003 
3-year-old males, estimated: 
2-year-old males, Aug. 10, 1937 '__-------_-_--------------------- 80, 653 18, 111 98, 764 
Natural mortality, 12:5 ypercents2e2e2" 208s 95L)___lusebo ieee 10, 082 2, 264 12, 346 
: SESE | TNS tr ree oer ees Se 
2 3-year-old-males beginning 19382: =. -.-~_-.-_L_---2--L-+1+--- 70, 571 15, 847 86, 418 
S-year-olaumalesikilledtimlO38e2=2- 2222227 2 2 ae 42, 864 11, 276 54, 140 
S-year-oldumales, Ate. 10) 19382. --- se 3h=5s2i ones St. - 27, 707 4,571 32, 278 
4-year-old males, estimated: 
a-year-old males, Aug. 10; 1937)t= 2" -2-- -—_--- 4 -__- tk _-- 24, 754 4, 833 29, 587 
RUAEEHMtOntallnved| OlpeLGemtss === -—. 2 = sh cee -= 2, 475 483 2,958 
; pa le a |e 
4-yesr-old males beginning 1938_...--__-._--_----.-.--=-----1--- 22, 279 4, 350 26, 629 
/ AEVGAT-Olai males NGG ITH Os peer hewn 2 tt 828 SE ee 1, 642 712 2, 354 
| 4-year-old males; Aug 10619380 NO Subsite 2 ae 8 20, 637 3, 638 24, 275 
5-year-old males, estimated: 
Sate NG EGS, ZA Tes 1A GR y (A ee 15, 910 4,316 20, 226 
Natural mortality, 10 percent--2--—--_-.-_-___-= tess ceter seeee 1, 591 432 2, 023 
5-year-old males beginning 1938___---------------------------- 14, 319 3, 884 18, 203 
b-year-0lGimalesikilledimilOs8e—=— =~ 2 =. 5 Sse 2 = 2 2 || et on Bane eS 2 
D-VeAr-OlGin ales PAUP OOS) ———--=.- == -- ====ae==---- = 14, 317 3, 884 18, 201 
6-year-old males, estimated: 
Peyear-OlgnmaAlosAUIpen OOS tee. === 2----—------=--=--===-=---~- 18, 567 3, 019 21, 586 
INAinEalIMOEtaAlitysc0) DCLCONb=-——-- == --=2—--=------===-=-----== 3, 713 604 4,317 
6-yesr-oldunales Aura 10 11938"---=---.- ------=--------=------ 14, 854 2, 415 17, 269 




1 It was found necessary to apply mortality rates of 45 percent for female pups and 50 percent for male 
pups, instead of 40 percent in each case, as formerly. Adjustments were made in the figures for 1937, there- 
fore, to take care of these increased mortality rates for female pups and yearlings, and for males up to and 
including 5 years of age. 
