Oils from Marine Mammals. 203 



876,000. In the last quarter of a century the total number 

 received has been nearly 23,000,000, thus summarized in 

 periods of nine years ending — 



1848 4,884,775 



1857 ... ... ... ... 6,429,820 



1866 ... ... ... ... 4,763,132 



1875 6,744,447 



22,822,174 



Fig. 12. 



Phoca oceanica. 



The fur seal-skin of commerce is obtained from different 

 animals to those of the hair seals. One association, the 

 Alaska Company, contributes 100,000 of these skins a year, 

 having a monopoly by a contract with the American 

 Government. 



