
Postseason escapement.--The same method of fitting normal 
curves to the various returns is applied here. The returns to which they 
were applied and the results are as follows: 
Kill of 4-year-olds in-- 
Round 
centered ate- 950 ATG 
June 20 974 493 (1/) 
25 1,112 1,241 (1/) 
300 1,311 2,513 (1/) 
July 5 1,916 3,308 3,026 
10 2,687 3,207 Ay 388 
15 3,326 23945 2,503 
20 2,864 3,294 1,854 
25 1,853 2,083 1,663 
Total 16,043 19,658 
Estimated escapenent 
(after July 27) percent 15 8 4 
A i Sy a — Sena SS A Ely ene A. LE eS LE TES mahi Ra ae 

1/ No complete analysis available. 
Averaging these the estimated postseason escapement is 9 
percent of the overall total; in other words, 9l-percent haulout before 
the end of the killing season. 
- » Combining the two types of escapement it is 
estimated that: 
-91 (87) = 79 percent of the four-year-olds are taken in 
the kill or that 21 percent of the total escape. 
Some of the estimates above may be low for reasons outlined; 
all, of course, are subject to indeterminate sampling errors. On the 
other hand, any postseason kill will reduce the total escapement. 
Applying this escapement to the 1950-52 average kill of 
4-year-old males (estimated in table 7) gives: 
Estimated return of 4-year-olds = 21,478 = 27,187 
“19 
Estimated escapement of 4-year-olds = 27,187 -21,478 = 5,'709 
Total escapement.--It will be observed that the estimate of 
escapement of 3-year-olds and the estimate of returns of 4-year-olds 
-65- 
