5 10 IS 20 25 5 10 15 20 c'O 5 10 15 2C' 25 5 10 15 20 25 



JULY AUGUST SEPTEMBER OCTOBER 



5 10 15 20 25 5 



NOVEMBER 



75 



CO 



u. 



li. 

 o 



LlI 



m 



25 



FIGURE 3 LENGTH FREQUENCY OF BLUEBACK 

 SALMON, OKANOGAN RIVER, 1957 



635 COMPOSITE 



324 MALE 



37 I FEMALE 



1475 1550 1625 170 1775 1850 1925 200 2075 2150 22 25 230 



FORK LENGTH-MIDPOINT OF 1/2" INTERVALS 



