7 — LATER STAGES OF GADOIDS 



CA 



is, however, probable, judging from the fact that the general average for the area Fl is/- 

 24.0 cvvts, while the few landings reported from Gl are an average of over 28 cwts. h^ 

 In another chart (fig. 4), we compare the catch of 1910 with the mean catch of tag . 

 five years 1906 — 1ÇUO, the catch for the year 1910 being represented as a percentage ./ 

 fraction of the mean. A curious result is apparent. In the south-western part of the' 

 North Sea the catch of 1910 is above the average, everywhere else it is below. We can 

 draw a sharp line from Flamborough to the Texel, to the south of which line the 1910 

 catch is above the average, while in every area to the east and north of it, it falls below. 



Fig. 5. Percentage Proportion of Haddoch to Total Catch of Fig. 6. Percentage Proportion of Cod to Total Catch of Demersal 

 Demersal Fish landed by English First Class Fishing Vessels, from Fish landed hy First Class English Fishing Vessels, 1906—10. 



the North Sea, 1906 — 10. 



II. The Distribution of the Various Species of Fish, 

 a. The Relative Abundance of the Various Fishes (Table III). 



As in my former report, I have prepared a table showing, for the years 1906—10, 

 the percentage proportion to the whole demersal catch of Cod, Haddock, Ling, Whiting 

 and Coalfish on the different areas. The charts that have been drawn from this differ, 

 on the whole, remarkably little from those that were formerly based upon the catches 

 for two years (1906 — 07) only. 



In the case of Haddock (fig. 5) the chart has become slightly modified in its southern 

 portion, where the area within which this fish represents less than 10 % of the total catch 



