Appendix Table 4. --Numbers of bluebacks of each age caught in the 

 fingerling-bypass traps at Bonneville Dam during 

 weekly periods in 1952. 



Age 



I ^ 



LOtal 



1 

 2 



1 1 



10 10 



20 20 



6 6 



71 - 



12 12 



Q O 



12 1 13 



6 6 12 



9 3 12 



177 3 1^''0 



338 2 3L0 



285 23 308 



520 25 5h5 



l5)i 1 155 



33 33 



9 9 



1 1 

 11 2 



2 1 3 

 12 12 



3 3 

 2 2 



1 1 



2 2 



Total " 21 1616 SS 1 170li" 



40 



