116 



ALASKA. 



From this table behold that — 



a. Every fifteen years, from 3,G00 females, there can be received 

 ill sixteen years 24,700 seals 5 in sixteen years still more; and 

 in twenty years 41,040. 



h. In the twenty-first year the incomers begin to diminish, 

 provided that if in the mean time, or the following- sixteen years, 

 a certain unmber of young seals are not left to breed; and 

 if every year a known number are left to breed, then in all 

 following years the yield will never be less than 20,000 every 

 year. 



Table III. — Calculation as to the coming of the seals on the island of Saint 

 George, made up from two years, and based upon that experience, (1827-'28.) 



The actual taking' of seals was as follows : 



Seals. 



In 1828 ^... 4,778 



In 1829 3,661 



In 1830 2,834 



In 1831 3, 084 



In 1832 3,296 



In 1833 3,212 



. 3,051 



In 1834 

 In 1835 

 In 1836 

 In 1837 



2, 528 



2, 550 



2, 582 



Total 31, 476 



From this table it will be seen that up to 1838 my cal- Seals. 



culation makes a yield of ... • 30, 870 



While the actual result was 31, 476 



Difference of 006 



The difference determines that the hypothesis upon which 

 the table is based is correct. 



