on approximately 2,800 tooth readings for age as discussed previously, 
show that about one-third of the seals in this length group are actually 
A-year-olds and a few are 2's and 5's. Similarly, studies of 4,196 tagged, 
known-age seals recovered on the killing fields indicate a discrepancy in 
the age-length standards. The biologists now use the term "group-III males" 
rather than "3-year-old males" in referring to the 41- to 45-inch length 
class (appendix D). 

Figure 7. Measuring the length of a bachelor seal. 
For each male seal killed during the commercial sealing 
operations the length from tip of snout to base of tail, to 
the nearest inch, is recorded. The clubbers attempt to kill 
seals within the limits 41 to 45 inches, since animals within 
these limits, collectively designated as group III in this 
report, furnish the skins best adapted to commercial use. 
(VBS 2061}. 
The annual kill of group-III males since the effective date of 
the Treaty of 1911 is shown in table 6 and figure 13. Also shown in table 
6 is the theoretical group-III kill, obtained from a logistic curve fitted 
to the observed data. As is the case in fitting a logistic curve to the 
harem—bull counts (table 5), the agreement is reasonable. The kill by 
decades of all seals since the discovery of the Pribilofs is shown in table 
17 and is discussed in appendix A. The kill of all seals on the Pribilofs 
~15¢ 
