26 



TABLE VI— PLAICE, 1920. 



Size 



Dru ridge 

 Bay. 



1 

 0-2 

 0-5 



Blyth 



4 



14 



3 



2 



0-3 



This brings into relief the great contrast already pointed out 

 between the bays, not merely with reference to the number of 

 plaice but as to the size. If wo were to restrict our view to the 

 larger plaice, those above 30 cm. (12 inches), the stations would 

 appear to be little different from one another. It is the young 

 plaice which this year particularly marks out the northern station, 

 Skate Roads. In the southern bays the predominant size is 21 

 to 25 cm. 



The facts for the dabs are just as striking, but in a different 



way. 



TABLE Vll —DAB, 1020 



Biytn. 



2 



21 



8 



1 



The dab is not only more prevalent in the southern part of 

 the district, but is so at all sizes. In this case the predominant 

 size is 16 to 20 cm., and it will be observed how sharply the dabs 

 of that size stand out in the results for the three southern stations. 



These results agree in the main with those of the pre-war 

 years, but there are certain peculiarities. The 1920 experiment 

 refer, it may be said, to the month of August, and the average 

 results for that month from 1899 to 1913 are submitted for com- 

 parison (Report, new Series III., pp. 36-37). 



