25 



Besides bringing out the fact with respect to marketable 

 fish that Goswick Bay agrees with Skate Roads, it incidentally 

 shows that the largo fish usually appear late at Goswick, but tho 

 other results in the above table for the district as a whole indicate 

 that the appearance of the large plaice varies with season. They 

 may predominate in early summer or in late summer, and in some 

 seasons there is relative equality, and it will be observed that when 

 this last is the case all the district is involved. This is a point, 

 however, which will be better discussed with reference to the 

 size of the fish. 



It is gratifying to notice that during the period of the complete 

 experiment the district on the whole has improved with respect 

 to the numbers of flat fish. 



The long experiments in each bay and the records they 

 furnish of the changes in the marketable fish have been valuable 

 for the variations likely to affect a short experiment were to a 

 large extent eliminated. They were made during the season, 

 June to September, when the shore waters receive their maximum 

 numbers of summer migrants, at stations of an average depth 

 of three fathoms, and lasted long enough to cover at least one 

 tidal phase. The information they yielded has been published 

 in detail in the annual reports of the Dove Marine Laboratory, 

 and further details of a summary character will be found in the 

 reports for 1905 and 1906. 



Marketable and Small Flat Fish. — The points which have 

 been illustrated with reference to the marketable fish gain in clear- 

 ness, and others emerge from a consideration of the detailed records 

 when all sizes come under review. 



Plaice and Dabs. — A. Character of the Bays. — Turning 

 once more to the tables of catches made in 1920, the size of the 

 plaice and dabs may he presented as follows, the numbers refer 

 ring in each case to the fish measuring up to 15 cm., from 1G to 

 20 cm., and so on. 



