FUR-SEAL CENSUS, PRIBILOF ISLANDS, 1918. 18% 
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 study of the skulls bas 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. 




Skin 
« Carcass 
Tag No. Date. Length. weight. 
weight. 
Lbs. Oz. | Inches. Lbs. Oz. 
4 12 
Je eee e en Benn Gon FOO e eS Oe DSSRO OSE CORO SECC SOE SCEDSUOBE Aug. 8..| 30 6 35. 25 
INTER = cacc asc He Seca See doo Gane © Seen pecan Seee ua siooe oe ene do....} 28 35. 00 2 5 
BS OARG ase a= Steen ecisncis ose oie ee cniiesicicani asec acissaeee's|'</eia do-221) 30 6 35. 50 4 
INCAS S SSR ROSAS Ho SsIge SOLE Pee ae Se SBS soe = see ee obecoce aoe doe e|eeios 12 36. 00 4 14 
JA To )3 3 AGE Bega e See ce do ceee CaE BSB AL SOR CBO SC OCS Sensor ned Aug. 10-| 30 14 34.25 | Not taken. 
AN GAN SS sO Be eee Shc Sb do odessa ne BOSE DOORS EERE ES pena SSeBCee see do....| 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. 
Pups; ‘counted, and estimated... . /.22s2essesr Ree aR oteate Lie! acdenne 142, 915 
Breeding cows, 3 years old and over, by inference...........-------+-------- 142, 915 
[8 Evmeieaee oy ell iSh GOV Pn an 6.6 [ee ee a a ee eee ee ee ee een eee 5, 344 
URS 1 PAPI R TI ee EI pe dn ete tag tie ns See Nd le Speier 2,444 
Yearlings, male and female, estimated: 
eben OmnneE Lely eee a eee NG Oe Ot a oe 128, 024 
35 per cent deducted for natural mortality.........--.-------- 44, 808 
Yearlings, both sexes, beginning 1918. ...........--..-.-.....- 83, 216 
Riemsnics ou pen Celt. 2. tess ae eee Ske eee cet Sete 41, 608 
= A608 
Maker heoinning Of 1918... io. css ee0 coves csaacesdestscsseeses 41, 608 
Pe aN OG LOL Gee sounns ke assed oodsesoeas dos dvdes ses se2453 13 
ae A OSA OS cy. ores so 22222 Sooo secede se o3e caer ss deeesases. 41,595 
2-year-olds, male and female, estimated: 
Yearling females Aug. 10, 1917...............---- sosoesasdsee 38, 018 
20 per cent deducted for natural mortality... .........--.---- 7, 603 
2-year-o1a semales) Anim. 10, TOUS)... ses asace seags ese SOURS 30, 415 
Peoria minies, Arig. 100 89E (6c. 2= 3 -+--=5255528evav anes 38, 013 
emieetictiloss tall OF TOU eres 2. 5 <2 ow nes aoa beanwads-e 1 
NEOUS Ted 22 O05 TIN I ise a 2 oe 38, 012 
20 per cent deducted for natural mortality.................-.. 7, 602 
2-year-old males beginning of 1918............--..---.------- 30, 410 
2-vear-old males kalledeaisen. =22.0...02255. 8 go een oe ec we 251 

2-VeRe-Gle) Minlem Ammen LOLS. -0: ceo sant owls ts ne ons cess 30, 159 
