SEA-FISHERIES LABORATORY. 253 



indicated. All these fish were recaught in September 

 and October, months during which there is still an active 

 fishery in the neighbourhood of Nelson Buoy. (2) A group 

 of 16 plaice have migrated inshore during the month of 

 November, and have been recaught in all the great Bays 

 and Estuaries from the Dee to the Kent in Morecambe 

 Bay. (3) Seven fish have made the migration to the 

 westward, to the winter fishing ground in the Red Wharf- 

 Beaumaris Bays area. These are precisely the same kinds 

 of migrations which were made by the recaptured fishes of 

 Experiments III and IV, and by those of former years' 

 experiments in this area and at this season of year. 



Experiments I and II of 1912. (Chart V.) 



Along with the results of Experiment Y of 1913 it 

 will be convenient to consider those of Experiments I and 

 II of 1913, since to the recaptures of 1912 have been added 

 the additional ones relating to this experiment, but 

 recorded in 1913. We see then the same general results 

 as those of the present year, but there is the difference that 

 the fish recaptured during the months July to September, 

 while still moving offshore in the same general way as in 

 1913, have distributed themselves more widely over the sea 

 to the West from Nelson Buoy : in 1913 the shoal remained 

 relatively concentrated when compared with the distribu- 

 tions of former years. This represents the kind of 

 deviation which may be studied and correlated with the 

 physical conditions of the season, when once we have 

 attained a generalised knowledge of the migratory paths 

 and seasons corresponding to the average conditions. In 

 October the recaptures seem to indicate the inshore move- 

 ment, that is, the fishes recaptured in that month have 

 been found, on the whole, closer inshore than in the pre- 

 vious months. Then we have the winter migrations 



