FUR-SEAL INDUSTRY. 95 
The average harem.—The average number of breeding cows in the harems for the 
entire herd, or for subdivisions thereof, may be ascertained by dividing the number 
of breeding cows, which is equal to the number of pups, as ascertained by count, by 
the number of harem bulls present on the area considered. In 1914 the number of 
cows in the average harem, for the herd as a whole, was 59.8; in 1915, 48.13; and in 
1916, 33.42. 
The following table shows the size of the average harem, together with the per- 
centage of idle bulls to harem bulls for the herd and for various subdivisions thereof 
in 1915 and 1916: 
AVERAGE HAREM AND PERCENTAGE OF IDLE Butts To Harem Butts, 1915 anp 
1916. 
1915 1916 
Percent- Percent- 
Rookery. Breed- Aver- | ageidle | Breed- Aver- | age idle 
5 Harem . Harem 
ing age bulls to ing age bulls to 
cows. bulls. harem.} harem cows. bulls. harem.| harem 
bulls. bulls. 
ST. PAUL ISLAND. 
WBIa WI eS oe 8 oe a een 2, 475 67} 36.9 35.8 2,472 95 | 26.0 46.3 
VEE RETIN, oe acta oss 1,954 46] 42.5 39.1 2,141 64] 33.4 70.3 
6,978 152 | 45.9 23.0 8, 864 234} 37.9 47.0 
632 25°) 25.3 24.0 700 33 | 21:2 27.3 
14, 750 294 50.2 20. 0 16,331 490 | 33.3 54.9 
4,535 96 |. 47.3 23.9 5, 020 162] 31.0 68.5 
394 152603 26.7 388 13;|, 2938 61.5 
11,623 237 | 49.0 19.4 12, 065 361 | 33.4 92.8 
8, 740 173: | .50..5. 53. 2 9,682 309 | 31.3 107.4 
5,682 106 | 53.6 24.5 6,277 178 | 35.3 88. 2 
219 7 {esa} 85.7 266 8} 33.2 PND 
4,161 70 | 59.4 44.3 4,744 162} 29.3 ays) 
1, 553 BB Mey aal 33.3 1,683 59: | 2825 79.7 
1, 065 Oty 502 42.9 1,074 31 | 34.6 67.7 
Morjovi....... ree 2,395 51| 46.9 41.2 2,761 95 | 29.1 92.6 
Wostochini. is. 42. 2--05-+- 20,981 ]- 396] 53.0 34. 1 24, 387 | 654 | 37.3 93. 4 
ANS LE a ae 88,137 | 1,789 | 49.27 30. 52 98,855 | 2,948 | 33.53 77. 27 
ST. GEORGE ISLAND 
JSS.) Ses See eer 5, 731 141 | 40.6 37.6 6, 246 200 | 31.2 BleD. 
BtnrayaeATt. - os. feces 4, 450 89 | 50.0 34.8 5,545 142} 39.0 76.8 
Zapadni...-- BOSE te aoe cee ae 989 23. | 43.0 43.5 965 315) toiat 151.6 
SUT SS se oS a eae 26 3 oY (ee ne ee 19 3 (8S em |e eee 
LTRS Ag 88 212) SS at ope eee 1, 047 30 | 34.9 60. 0 1,585 Hone alert 60.3 
IASTAOLIEES. 2m Soeisetes oso fas 3,147 76 | 41.4 19.7 3, 762 103 | 36.5 49.5 
BROU eo niarea a biacece ce. oe 15,390 362 | 42.51 35. 08 18, 122 552 | 32.82 64. 13 
Sip A ASIAN Og iin. oc .= 25 3 88,137 | 1,789 | 49.27 30. 52 98,855 | 2,948 | 33.53 77. 27 
St. George Island............ 15,390 362 | 42.51 35. 08 18, 122 552 | 32.82 64. 13 
Total, both islands. .... 103,527 | 2,151 48.13 31.28 | 116,977 | 3,500| 33.42 75. 20 
1 1 ns 
Yearlings.—Few yearlings were noted at the islands in 1916 prior to August 20. 
Many were smaller in body than the pups at the time the latter were just beginning 
to acquire the silvery gray pelage. 
The number of yearlings in 1916 was calculated by making certain deductions from 
the number of pups born in 1915, as will be shown later in the statement of the com- 
plete census. 
Two-year-olds.—The number of animals in this class was calculated by making 
certain deductions from the number of yearlings in the herd in 1915. 
Three, four, five, and six year old males.—The number of animals in each of these 
four classes was also calculated from the 2,3, 4, and 5 year old male classes, respectively, 
of the previous year. In determining the 4, 5, and 6 year old classes, no deductions 
