IIG 



ALASKA. 



From tliis table beliold tbat — 



a. Every tifteeu years, from 3, GOO females, tberecan be received 

 iu sixteen years 24,700 seals j iu sisteen years still more; and 

 in twenty years 41,040. 



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

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

 a certain number 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. 



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

 George, made up fi'om two gears, 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 



Inl83L 3,084 



In 1832 3, 296 



In 1833 3,212 



Inl834 3,051 



In 1835 2, 528 



In 1836 2,550 



In 1837 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. 



606 



The difiFereuce determines that the hypothesis upon wliich 

 the table is based is correct. 



