FUR-SEAL CENSUS, PRIBILOF ISLANDS, 1918. 127 
finding the desired number. A drive from Zapadni August 8 yielded 
4. On August 9 and 10 none was found on Polovina, Lukanin, 
Kitovi, Tolstoi, or Reef. Two more were secured on Zapadni on 
the latter date, making 6 altogether. Subsequent examination of 
the skulls of 4 more, thought to be yearlings when killed, proved 
them to be 2-year-olds. This ceded of the skulls has not as yet been 
completed, but is expected to yield valuable data on the growth 
of fur seals. 
The information secured from the 6 undoubted yearlings follows: 
Data ON YEARLING SEALSKINS. 
Tag No. Date. a Length. Skin 
Lbs. Oz Inches. Lbs. Oz. 
PANG TRS oe ears toe antticiciae alamiajsiore aicidta Wales «cla canecubasiosesdea Aug. 8 30 35. 12 
PAM GAS eee rae Peden. Soh Sabo cuio tee hoes ues doe eebmees eobualoee do.. 28 35. 00 4 5 
ROWAN ee eis ao Sica cas nat noe eos eacuciosqa ue wees enue ses hae do.. 30 6 35. 50 
PRMGH RIN te See rome toma at). abe Sagas tone ene sisciene wisi etd dO s—.-#3 32 12 36. 00 4 14 
PNRARO ET oo aol ant ae on tite asic Cad dnasa sane nuascmemacels Aug. 10. 30 14 34.25 | Not taken. 
ot LN (aa Ra he ae a Re Ae Ri (i Oa se 33 10 34, 25 Do. 
ADOLESCENT SEALS. 
The numbers of animals estimated for each age class is taken up 
in the statement of complete census following. These are found 
from the counts and estimates of 1917 by deducting 35 per cent for 
natural mortality the first year, 20 per cent the second, and 4 per 
cent the third. Also all animals killed for their skins have been 
deducted from their proper classes. This includes all killings from 
August 11, 1917, to August 10, 1918, the sealing year. The totals 
represent those supposed to be alive on the latter date. 
COMPLETE CENSUS OF FUR SEALS AS OF AUGUST 10, 1918. 
Pape, Cmmed. and: CstMAted os dsieys oo ae Ostet ape dind-enbeue 142, 915 
Breeding cows, 3 years old and over, by inference.............-.+---------- 142, 915 
eee IPR RNILEDE aS ht atte as = aes tes a own a bingy wi mai opmcece ae eae 5, 344 
OE PLS TIE EIS EER Soli it eo tee ne eda ep ep a 2, 444 
Yearlings, male and female, estimated: 
a DS NG Se i ee 128, 024 
35 per cent deducted for natural mortality..............------ 44, 808 
Yearlings, both sexes, beginning 1918. ................-....-- 83, 216 
Momales, G0 Ber Cont. 2 o2 oo ass oa eos. oS coo see's 41, 608 
ah At 60S 
Miles. bepinning ‘of 191853. 2). cnc hres eme erste aoe wre 41, 608 
Males: killed in LOLS. \c.s3c... ieee eee oe ee 13 
Moles. Aug. 10, 1918021... 22 cee temeeees ett ee eee seek tered 41, 595 
2-year-olds, male and female, estimated: 
pearme semales Aug. 10,:1917.. 251.) scce ne. eee 38, 018 
20 per cent deducted for natural mortality... .........--.---- 7, 603 
2-year-old females Aug. 10, 1918.0 220 oon ne nnn nn ee a 30, 415 
meeeomates, Aug. 10) LOM, 2 oos epee enna nn nnn nnn nine 38, 013 
meee FAN OL LON oo Mn be ee al 1 
EMRE oes cer eee) co. s+ +--+ 22 es 38, 012 
20 per cent deducted for natural mortality.............---.--- 7, 602 
2-year-old males beginning of 1918............-...----------- 30, 410 
Pyeurimamaies killed LOLS. .>. 2.22320 2.0 22 J... see ee ee 251 
oye emenies Adige, 10; BOIS i a e222 eet ee ee ke eee 30, 159 
