RAPPORTS. XIV: MASTERMAN 



— 12 — 



Witches. 



Lemon 

 sole. 



to those of area F t but it is difficult to be certain of any reciprocal movement. The curves 

 seem to clearly point to large and important movements of this species correlated with 

 the seasons but one cannot give them greater precision with the present data, which as 

 a matter of fact are based upon such small figures that they may not express the 



true facts of natural 

 distribution. 



This deep-water spec- 

 ies has rather a different 

 type of seasonal curve to 

 the preceding (Fig. 6 and 

 App. Table u). The 

 comparatively shallower- 

 water areas D x D 2 and 

 E all show a typical 

 winter maximum in De- 

 cember or January with 

 a fairly evenly formed 

 curve. The minimum 

 however is not found 

 in June or July owing 

 to a slight secondary 

 maximum at this season. 

 In E, D x and D 2 the 

 curve is slightly raised 

 in June, or July and 

 August respectively, a 

 fact which may have 

 some significance. In 

 F r where the catch is 

 of much larger quantities 

 than elsewhere, the curve 

 also shows a maximum 

 in winter and a very 

 large maximum in June, 

 and July. The minima 

 oir „iv.»k-«»| are in April and October. 

 The steady increase 



Figure 7. Catch of Lemon Soles per day by Steam Trawlers, in certain areas in numbers in mid- winter 

 of the North Sea. (Mean of the 4 years 1906— 1909). j n a ]i ar eas is in marked 



contrast to the curves 

 for the megrim in the deeper areas. As in the case of this fish, the curves are in certain 

 instances based on small data and must not be relied upon to a great extent. 



In a previous report the lemon sole was shown to be concentrated in its distribution 

 within the areas contiguous to the East coast of England and Scotland, such as C t D 1 D 3 

 and E. In d and D r the numbers increase fairly regularly from a minimum in January or 



