ALASKA FISHERY AND FUR-SEAL INDUSTRIES 347 
Complete computation of fur seals, Pribilof Islands, as of Aug. 10, 1936—Continued 





























St. Paul | St. George 
Class Island Island Total 
4-year-old males, estimated: 
S-yveat-oldamaless Aucs10) 193525 2 eee 24, 088 4,077 28, 165 
INatiralimmontality, JO percente 2) =-—---4-) = ao a ee eee 2, 409 408 QE 
4=-vear-old males: beginning 936se-s-——- = 22 oa eee ee 21, 679 3, 669 25, 348 
4-vear-oldumalesikilled in) l936222-=5—5-2-— == a5) os eee 1, 045 312 1, 357 
A-VCAT-O1G) MAAS, PAIS sy. O nl OS Om eee cee ee ee 20, 634 3, 357 23, 991 
5-year-old males, estimated: 
Bey ear-oldumales Ati. OOS bse mee onan an eee a 17, 599 3, 497 21, 096 
Natiralemortality: 1Ompencent sees -—- os) a eee eee 1, 760 350 2,110 
-yeat-oOldsmales) bepinnin gl O36» sees = ee = eee ee ee eee 15, 839 3, 147 18, 986 
‘S=year-oldsmales killed )inyl936- 42S 2s 2 ee eee eee Pe eee 1 
Bb=veat-oldimales wAure si 0» 1936 ase nasa eae en 15, 838 3, 147 18, 985 
§-year-old males, estimated: 
p=year-oldlimales) "Anite. 10; 1935. 22 Sasa 2 a= ee ee es ee 11, 606 2, 670 14, 276 
INatunallmortality, 20) percentaes= 22a. sa ae ae ee 2, 321 534 2, 855 
G=year-old males; Aue. 1051936: ee 9, 285 2, 136 11, 421 
Surplus bulls, 7 years old and over, estimated: 
6=year-oldimales. Aug. 10519352 a2ees = ease eee eee 9, 647 1, 470 ie aly 
INatixalamontalityes20ipercentsasses=seeee =e. === ee 1, 929 294 2, 223 
feyear-Old males; Ate 101936 eee ae = ee 7, 718 1,176 8, 894 
SUT plas walls eA e013 5 ee earn ee (1) (1) 6, 139 
Natiralimortality:,30 percents 225) 225 2-8 Ss ee ee eee ea oe 1, 842 
Remaining surplus for 1936: 22. 22a ee ee ee eee secant eee 4, 297 
iBreeding: bullsiof 19352222 - = Sas ee ee ee ae 11, 526 2, 556 14, 082 
Natural mortality, 30 percent 3, 458 767 4, 225 
OShabumllsiremi aiming rel OS Gee 8, 068 1, 789 9, 857 
Breeding bullsvoil9365: 2: = ee eee 12, 308 2,746 | ° 15, 054 
Hosp wllsinemainin eg, deductede sees =.= = = ene ae ee ee 8, 068 1, 789 9, 857 
imerementof new, bulls:in! 193622 = sae ee ee ee 4, 240 957 5, 197 
f-yeat-old males ‘computed tor LO36=2 ss aaa een ene 7, 718 1,176 8, 894 
Sunplusibullsicomputeditor 193622222 ae ae a ee | eee ae eee 4, 297 
Motalitheoretical bullistock fori 93 6 aes sae sere eo eee ea eee 13, 191 
INewsincrement, of, breeding bullsideducted =.=. =a eames nnn Se ee 5, 197 
Surplusibulls, Awe: 10; 1936.22 25 Soe See ae ee ae ee |e ee 7, 994 



1 Estimates have been worked out, insofar as possible, to show approximate number of seals of each class 
which should be credited to each island. Seals do not, however, haul out in accordance with figures given. 
Seals born on either island frequent the other island. They travel promiscuously between and haul out on 
either of the 2islands. The total for both islands, however, is approximately correct. 





RECAPITULATION 
Class Total Class Total 
12D 0 sees a ae a ea ee 52658480|o-vear-oldumalessasse=- - sea ne st nea es 18, 985 
(COWS mee es ee a as eee 52678487) 6-year-oldgmalesse sens. =- een SE ey 11, 421 
iqremepmllsis= 3-5. 2 22 = esa eee IPA RPAL |!) PSybhe oho} |opoU ke SR ee 7, 994 
Ndlevbwilseeeee bs 2 0225 -eee eee <2) 288} —_ 
hearlinesfemalese--2--=------ 22 See 146, 365 Rotel O3Geee eee os ee 1, 689, 743 
meanlingamalests .-.. 2... 222s 2e ssa 146;/360))||e otal whoshmas=emmn es 2h ee ee 1, 550, 913 
2-VeAT-OldiieMaleS- = _===s52.255— eee ee ae 115, 197 ae 
2zVOat-OldgMalessen.. sas anon sane eee = 110, 505 || Numerical increase, 1936__..--__----__-- 138, 830 
Sevear-oldumales.=8 22222. 2--2- sess el 40:1'705\\|' Percent incredse, 19362. 2-2-5 2.28 8.95 
A-VOar-Old: males: == 2 = 2=-2--e no see eee 23, 991 


