294 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



rendered clear. In the meantime, the main migrations 

 made by plaice on the Lancashire and Welsh Coasts 

 during the ivinter are along the shore and within the 

 territorial waters ; the estnaries and bays are greatly 

 frequented by the fish. We have observed a general 

 Northerly tendency during the winter. In the summer, 

 while the along-shore migration, within the territorial 

 waters, still continues to some extent, an offshore and 

 Southerly migration has been noticed. There are, of 

 course, many exceptions to these general tendencies. Fish 

 liberated within the waters of Liverpool Bay remain there 

 for the most part. Only in two cases have fish liberated 

 on the West Coast of England crossed the Irish Channel. 

 Only three cases are recorded, so far, of fishes which have 

 migrated out of the Irish Sea, and all of these are, most 

 probably, fish which were set free in Luce Bay. 



Explanation of the Charts. 



Plate XIV. 

 Shews the results of Experiments Y., VI., X. 



Plate XV. 



Results of Experiments I.-IIL, IV., VII.-VIIL, 

 XL, XIV. 



In all cases the large circles indicate the positions 

 of the " stations " on which the marked fishes were 

 liberated. Each of the smaller circles indicates the 

 position where a marked fish has been re-caught. 

 Obviously these latter positions can only be represented 

 approximately on the charts. The figures inside the small 

 circles represent the numbers of months (4-weekly periods) 

 between liberation and recapture. 



