RAPPORTS. XIV: THOMPSON 



— 6 — 



trawlers, steam liners, sailing trawlers and sailing liners, may now be stated as 6.2, 2.8, 

 5.9, 3.9, days respectively. 



c. The Total Demersal Catch in the Several Areas (Table I, Ig, II). 



In Table I g we show, from year to year, the number of cwts. of fish landed by 

 English Steam Trawlers for each days absence from port. There has been a nearly 

 steady fall from 17.6 cwts. per day in 1906 to 16.2 cwts., in 1910. In only four areas, 





Fig. 3. Mean Total Catch for day's absence by English Steam 

 Trawlers, 1906 — 10. 



Fig. 4. Average catch per day by Steam Trawlers in 19 10, 

 expressed as a °/o of the mean cath of 1906 — 10. 



and none of them either large or important areas, does the mean daily catch for 1910 

 exceed that for 1906; these areas are At, B2 and C3, all nearly adjacent to the Eng- 

 lish coast in the South-west of the North Sea, and B5 off the north-west coast of Den- 

 mark. In the important Dogger Bank area, Bl, the fall is from 21.0 cwts. in 1906 to 

 17.3 in 1910, and the mean for the five years is here 19 cwts. This is the most con- 

 spicuous fall in any area. 



The chart (fig. 3) showing the mean daily catch for 1906—1910, while similar in its 

 general lines to that given in the former report of 1906— 1907, reveals the change that 

 has taken place. The zones corresponding to a catch of 15 and 20 cwts. per day both 

 lie considerably to the north-ward of their former position, and the zone showing a mean 

 catch of 25 cwts. per day, is not indicated on the map. Its existence to the northward 



