LATER STAGES OF GADOIDS 





tive abundance of this fish, and the means for the five year period are in practically 

 every case considerably less than those for the year 1906. 



The chart for Whiting (fig. 8) is scarcely altered from the preliminary one based on the 

 work of 1906—07. We see as before that it is in the middle part of the North Sea that 

 the relative importance of this fish is least, being there less than 5 % of the whole. The 

 smallest values of all are found off the Danish coast, in regions A4, B4 and B5, while 

 in D2 the numbers are also small. On the other hand, as we proceed both northward 

 and southward, the relative importance of the Whiting increases until we have it consti- 



Fig. 9. Percentage Proportion of Saithe to Total Catch of Demer- 

 sal Fish landed by First Class English Fishing Vessels, 1906 — 10. 



Fig. 10. Mean Catch of Cod per day's absence of English Steam 

 Trawlers, 1906 — 10. 



tuting 13% of the total catch in area C3, and about 10% or over, between the North 

 of Scotland and Norway. The scanty fishing off the Norwegian coast in F2 shows (for 

 the three years 1906 — 08) the very high proportion of 21%. 



In the case of Saithe (fig. 9), much as in that of Ling, a steady decrease from South to 

 North is clearly shown. In the extreme southern regions the catch is insignificant, and 

 with great regularity we can see the relative increase of this fish as we proceed north- 

 ward, till it reaches 5% and upwards. 



b. The Quantities caught per Day's absence of the Vessels (Table XI). 

 In my former report I gave a series of small charts to show the abundance of the 

 various fish in various parts of the North Sea as measured by the mean daily catch of 



