ALASKA FISHERY AlTD FUR-SEAL INDUSTRIES, 1922. 117 



^^^"^'^" ''^ '''''''' «^ f''^ ^'^«'«' Prmiof Islands, as of Avgust 10, 1922. 



Pups, counted 



Breeding cows, 3 years and over", 



by inference 



Harem bulls, counted ..[ 



Idle bulls, counted '" 



158,886 



Yearlings, male and female, esti- 

 mated: I 



Females born in 1P21.. 74 933 



Wot.,.01 <„,;... o, ;i 26^' 227 



27,028 



27,028 



378 



15 



Natural mortality, 35 percent 



Yearling females, Aug. 10 

 1922 ' ^ 



13, 395 

 4,688 



Males born in 1921 



Natural mortality, 40 percent 



Yearling males beginning 

 Yearling males killed" 1922.".! 

 Yearling males Aug. 10, 1922. 



48,706 



8,707 



74,932 

 29, 973 



44,959 



44,951 



2-year-oIds, male and female, es- 

 timated: 

 Yearling females, Aug. 10, 



1921 ^ gg^ 



Natural mortaUty, 15 per centj 6^ 985 



13, 395 

 5,358 



8,037 



8,037 



7,882 

 1,182 



2-year-old females, Aug. 10, 



Yearhng males, Aug. 10, 1921 

 Natural mortality, 17* per 

 cent 



2-year-old males beginning 



2-year-old males killed 1922! 

 2-year-old males, Aug. 10, 



3-year-old males, estimated: 

 2-year-old males, Aug. 10, 



2-year-old males killed "fall 



35,453 

 510 



34, 943 



2-year-old males end of 1921 

 Natural mortaUty, 12* ner" 

 cent 



3-year-old males beginnine 

 1922 ^ 



3-year-old males killed "1922."! 



3-year-old males, Aue. 10 



1922 ...........'. 



4-year-old males, estimated: 

 3-year-old males, Aug. 10, 



3-year-old m'al'es "killed" " fall " 

 1921 



6,003 

 26 



5,977 



31,185 

 24, 398 



3-year-old males end of 1921 

 Natural mortality, 10 per 

 cent 



6,787 



13,301 

 672 



5,427 

 ■1,755 



12,629 

 1,263 



^ye^-old males beginning 

 4-year-old males" idiled'1922".'.! 

 *-year-old males, Aug. 10, 



1922. 

 6-year-old males, estimated: 



4-year-old males, Aug. 10 

 1921 ^ ' 



4-year-old males killed "fall 



11,366 

 416 



10, 950 



6,405 

 2 



672 



1,367 

 365 



1,002 

 100 



902 



45 



857 



375 

 13 



S-year-old males, estimated— 

 C ontmued. 

 4-yoar-old males end of 1921 

 Natural mortality, 10 per 

 cent 



^year-old males beginning 



5-year-oId males killed 1922." '. [ 



10, 



f-year-old males, estimated: 

 5-year-old males, Aug. 10, 



5-year-old males, Aug. 

 1922 ' ^ 



5-year-old males "kilied "fall 



5,763 



325 



10 



5-year-old males end of 1921 

 Natural mortality, 20 per 

 cent 



6-year-old males beginning 

 1922 ^ 



6-year-old males killed" 1922.' 



6-year-oId males, Aug. 10 

 1922 * ' 



Surplus buUs, 7 years and over, 

 estmiated: 

 6-year-old males, Aug. 10, 



6-year-old males "killed fall 



3,073 

 4 



3,069 



3,895 



702 



702 



6-year-old males end of 1921 

 Natural mortality, 20 per 

 cent 



7-year-old males beginnine 

 1922 



3,116 



2,921 



2,921 



876 



Surplus bulls, Aug. 10, 1921 

 Surplus bulls kiUed fall 1921 . . 



Surplus bulls end of 1921 

 Natural mortaUty, 30 per cent 



Remaining surplus for 1922. . . j 2^ 



Breeding bulls of 1921 

 Natural mortality, 30 per 

 cent __ 



1921 bulls remaining 1922 



Breeding bulls of 1922 



1921 bidl; 



ducted 



380 



380 

 114 



266 



s remaining, de- 



Increment new bulls 1922. 



7-year-old males computed 

 for 1922 f. 



Surplus bulls comjiuted for 



3,677 

 2,908 



769 



Total theoretical surplus bull 



stock for 1922 5 ig, 



7-year-old males killed in 1922.1 ' 



Total surplus in 1922.... 

 New increment breedi'iig 

 bulls deducted 



343 

 .. 1 



Surplus bulls in 1922.. 



50 percent deducted forl'isses 

 due to fighting, natural 

 causes, and errorsin loss per- 

 centage in previous years. . 



Surplus bulls, Aug. 10, 1922.. I 2 196 



150 



