II 



D'ARCV W. TMOMPSON 



This result tallies precisely with that set forth in the preceding figure, which showed 

 that an immigration of Cod to this area took place in spring, and of Codling in winter. 

 The mean proportion of Cod to the total catch of Cod and Codling in this area is about 



1901 



1902. 



1903 



1904. 



ID05 



1906 



^03 



IS 



I 



p- 



t 



s 



10 



I 



-ii^- 



^7- 



-A. 



\ 



^~r- 



Fig. II. Codling. Area XIX. 



55 p. c. It will also be noticed that the relative proportions are very constant indeed during 

 the six years, the proportion of Cod being just a little higher at the season of maximum 

 in 1901 and 1902. 



To the north-east of _^_ ,905 1904- 1905 I90S 



area XXIII, over the Witch 

 Ground, comes area XIX, 

 and here we have in the 

 case of Cod a clear and 

 regular curve (fig. 10). There 

 is unmistakably a single 

 annual maximum, occurring 

 about August or September, 

 and an annual minimum in 

 early Spring. The number 

 of Cod increased from 1901 

 to 1903, fell off in 1904, 

 and increased again in 1905. 

 On the same ground Cod- 

 ling gives a less satisfactory 

 curve (fig. 11), but there is 

 a pretty regular indication 

 of a summer maximum at 

 varying dates between May and August or September; and there is also an indication of a less 

 important increase (large in 1904) about the month of January. On these areas the 

 statistics show an abundance of Codling from 1902 to 1904, and a great diminution in 

 1906. During the years of abundance the average catch was nearly twice as great^as 

 on the areas already discussed. 



Fig. 12. Cod. Area X. 



