disagree by approximately 3,000 (allowing for mortality during the year). 
This difference is certainly less than the sampling errors involved. 
Consequently it is futile to attempt to determine on the basis of the 
present data whether the estimate of 3-year-old male escapement (25, 364) 
is too low or the estimate of 4-year-old male escapement (5,709) too high 
or whether perhaps a combination of both of these holds. 
course, be important to resolve 
this in the future, for on the basis of 
It will, of 
the present estimated 4- and 5-year-old kills and mortality rates, a 3- 
year-old escapement of 25,000 gives an annual replacement to the bull 
population (males 7 and over) of only about 1,000. 
Because this figure 
seems to be low, the life table for males has been calculated using the 
estimate of 4-year-old escapement of 5,709 as a checkpoint. 
Table 28.--Number of male seals killed on St. Paul Island in 
1951 by length in inches and by round 
 tetatntinaeedl 

ne he ca 
Number of seals killed during 5-day round with midpoint-- 
re ee 
Field 
length Pre- y gut 
finches) season™ _5. lo 
37 1 -—— --- 1 5 
38 — 2 6 8 6 
39 3 5 16 42 39 
40 25 39 123 254 215 
41 200 328 546 1,006 1,412 
L2 221 386 630 1,182 1,595 
43 220 479754, 1,247 1,753 
Ld, 177 439 589 983 1,469 
45 125 306 468 661 995 
Lo 42 188 219 312 8261 
L7 14 Lh 56 110 118 
48 6 18 12 25 60 
49 1 6 4 16 23 
50 1 5 6 5 1 
51 1 1 --— ~—— 1 
More than 
51 1 oe 1 ---~ 2 
Total 1,038 2,246 3,430 5,852 7,955 
1/ 2 days only. 
2/ 4 days only. 
3/ 2 days only. 
-66- 

July 
1.2 £0 
R 5 
3 6 
28 39 
239-322 
1,025 1,832 
1,278 2,116 
1,506 2,324 
1,156 1,977 
804 1,419 
338 586 
119 199 
30 86 
9 26 
6 7 
2 deine 
1 1 
6,546 10,945 


oe a 
Total 
15 
43 
217 
1,566 
8,712 
9,972 
10,954 
8,872 
6,212 
2,512 
351 
312 
119 
43 
7 
7 
Post- 
25. season 
1 
9 3 
38 7 
279 50 
1,989 374 
2,000 564 
2,106 565 
1,616 466 
1,093 341 
381 185 
141 50 
60 15 
30 4 
8 4 
5s lene. 
he eset 
9,774 2,628 
50,414 
