the slope.. However, no average slope greater ihan 2 degrees was found to exist 

 between contour lines . Furthermore, occasionally large catches of other species 

 of fish have been made in this depth zone showing that if the haddock are in this depth 

 zone they can be caught with the gear used. 



The only other factor which appears to differentiate this zone from the shallow- 

 er bank water and the deeper Guif of Maine and oceanic water is the character of the 

 bottom sediments. The bottom sediment distribution and its possible relationship 

 to the distribution of haddock will be discussed in a later section. 



Table 10 . - - Mean weight per tow by depth zones for subareas G, H , 

 and J, summer, 1949-1950 average 



Subarea 



G 



Depth zone 

 No. 



Age group 



I 



U 

 III 

 IV 



0-2 



3-4 



5-9-1- 



3-^ 



24.42 



11.52 



3.44 



6-86 



63.71 

 2.38 

 4.28 



27.86 



32.59 

 1.71 

 7.32 



48.92 



96.10 



4.09 



11.60 



76.78 



Total 



120.52 

 15.61 

 15.04 

 83.64 



H 



I 



n 

 III 



IV 



96.50 



23.17 



3.19 



1.06 



34.10 

 6.23 

 1.92 



21.33 



55.05 



9.54 



11.98 



46.21 



89.15 

 15.77 

 13.90 

 67.54 



184.65 



35 . 95 

 17.09 

 68.60 



I 



II 

 III 

 IV 



233.50 



274.94 



0.90 



5.21 



24.57 



227.16 



0.03 



44.67 



3.24 



]6."U 

 15.69 

 36.79 



27.81 



224 . 06 



15.72 



81.46 



261.31 



^i9.00 



16.62 



86.67 



Spring 



Figure 12 shows the abundance in terms of numbers" and percentages of the 

 various age fish in the four depth zones during the spring of 1950, 



At this season the total abundance of haddock decreased with increasing depth 

 with 2 -year-old fish dominating the catches in depth zones 1 and II and 3 -year-old 

 fish dominating the catches in depth zones III and IV. Although, as mentioned pre- 

 viously, these figures are based on a limited coverage of the bank, it is seen that 



29 



