
1. Harvesting practices have been uniform during the study 
period. 
2. Up to about 1935 computations for the size of the herd 
were quite accurate. 
3. Because of the uniform harvesting methods the kill of 
group-IIf males represents each year about the same 
fraction of the total herd. 

1000000 
10000 oe | 
ae z= IDLE BULLS 
1000 7 : 
lOO 1 
9155 1920 1925 1930 1935 1940 1945 1950 
Figure 13. Counted elements of the seal herd, 1912-51. 
Increase in selected classes (top to bottom): pups counted; 
group-III males killed; harem-bulls counted, with a logistic 
curve fitted to the data for years 1924-51; idle bulls counted. 
(See tables 2, 5, 6, and 8). 
After the middle thirties, the kill began to lag behind the 
computed growth of the herd. A logistic curve fitted to the kills of 
group-III males during the period 1924 to 1951 (table 6) indicates that 
under present management practices the annual kill is now fluctuating 
around a mean of 60,600. 
-\o. 
