BKST: LANDED CATCH OF RIGHT WHALE 



O 



o 



> 



or 2000- 



LLi 



< 



X 



o^ 1500 



LU 



a. 

 Q 



UJ 



>- 

 ^1000 



o 



CO 



LU 

 < 



X 



-Z_ 500 

 < 



NORTH PACIFIC 

 RIGHT WHALES 



\ 



i 



1810 1830 1850 1870 



YEAR 



1890 



1910 



Figure 4. — Mean whalebone yield per whale for North Pacific right whales landed 

 on U.S. voyages from 1841 to 1885 (A = assuming only those vessels listed as 

 landing whalebone actually did so, B = assuming all vessels taking whalebone 

 whales retained the whalebone to the same extent as those for which whalebone 

 production was reported i. 



^ SCO 



q3 600 



2 O400 



LU > 



X '^ 



z 

 < 



200 - 



1810 1830 1850 1870 1890 1910 



YEAR 



Fici'RE 5. — Mean whalebone yield per whale for right whales landed on U.S. voyages 

 (other than in the North Pacific) from 1822 to 1910 (A = assumption A, 

 B = assumption Bi. 



409 



