1949 



•^ 



10 

 10 



10 

 10 



K) 

 60 

 40 

 20 



560 

 540 

 520 

 500- 



;^ 400 



^ 300 



200- 



100 

 80 

 60- 

 40 



20 



No 



Somple WeeK-i-7 igQ 



8 140 



9 120 



10 100 



II ^° 



" 60 



12 40 



13 20 



'So 



15 60 

 40 

 20 



J 



■■'■I'll 



2^3 



h 



16 



-ji 



f8- 



20 



10 



10 



10 

 10 

 10 



10 

 10 



17 



I ■ I 



_L- 



[ ' I ' I I 1 ■ I ' I ' I ' I ■ I ■ I ' I ' I ' I ' I I I I 



w\ 



2 L, 



:i}a_ZL3_l. 



2fL 



J^^ 



lL 



- 1 



- r 



i£l. 



No Somple 



No Somple 



t 



No Somple 



18 



19 



20 



_2I 



_22 



.23 

 _24 



_25 

 _26 



_27 



_28 



_29 



30 



_3I 

 32 

 _33 



_34 

 _35 

 36 

 37-41 



_42 



_43-49| 



_50 



51-52 



I ■ ' ■ ' ■ I ■ ' ■ I ■ I ■ ' ■ I ■ 1 ■ I ■ I , I . I 



'40 80 120 160 200 240 280 320 



40 80 120 160 200 240 280 320 360 



Length in Millimeters 

 Figure 13. - Length frequency of downstream -migrant bluebacks in weekly 

 samples, 1949 . 



21 



