17 — 



LATER STAGES OF GADOIDS 



have 80 °/o of small HaddocK in 1906, we have about 42 u /u in 1907 and 1908. In 1908 

 the scarcity of small haddock is especially remarkable in the south-eastern part of the 

 sea, where in Area A 3 we have only 6 °/o of small Haddock as against 38 °/o in 1907, 

 and 09 °/o in 1906. Again in the adjacent area of B4 we have 20 °/o in 1908, as against 

 50 °/o in 1907 and 67 u /u in 1906. 



In 1909 (fig. 27) and 1910 (fig. 28) the great scarcity of small Haddock in the eastern 

 and south-eastern parts of the Sea continues, but towards the western side the quantities 

 increase considerably. The result is, that in both years our contours now become con- 

 cave towards the south-east, while in 1910 we have an area off the south-east of Eng- 



Fig. 26. Percentage of Small Haddock, 1908. 



Fig. 27. Percentage of Small Haddock, 1909. 



land where the percentage of small Haddock reaches the maximum. In that year areas 

 A 1, B3 and Cl have over 70 /o of small Haddock, and in E>2 the percentage reaches 

 8l °/o. 



The charts for large haddock are not by any means the converse of those for small 

 haddock. In other words, the relative abundance or defect of small Haddock would seem 

 to be mainly counterbalanced by a deficiency or excess of those classed as medium fish. 

 The large Haddock vary much in their relative abundance, but not so much as to alter 

 to any great extent the direction of their distribution contours on the chart. 



Accordingly it will be seen that in our five annual charts (fig. 29—33), showing the 

 percentage of large Haddock, the contours in all cases tend to be concave towards the 

 east or south-east, and in all cases region A 3 shows a maximum. This maximal pro- 



3 



