for making early predictions would be to devise a means of adequately sampling 

 the zero -ring haddock which are found concentrated in definite areas completely 

 separated from other year classes and not subject to fluctuating fishing intensity. 



Spring 



A survey was made during this season only in 1950 and only in subareas H, J, 

 M, and N. The distribution of tows in each subarea, depth zone and bottom type was 

 the same as that in the summer months (table 1). The catch per tow of each age and 

 the percentage age composition are presented in table 3 . The predominance in the 

 catch of the 1948 year class (2-year-olds) is again demonstrated. 



Table 2 . - -Mortality rates (percent) in various age groups 



Table 3 . - - Catch per tow and percentage of age composition in various 

 age groups 



12 



