SEA-FISHERIES LABORATORY. 255 



proper, that is, those made in November and December, 

 and we find the same division of these into the group of 

 fishes which have moved into the Bays and Estuaries, 

 and those which have moved westward into tied Wharf 

 Bay and adjacent regions. It is probable that when suffi- 

 cient data have accumulated we shall find that the size, 

 or perhaps age, of the fishes in these two groups varies, 

 and that the general nature of the migrations made by 

 the plaice abandoning the Nelson Buoy grounds is deter- 

 mined to some extent by the age to which they have 

 attained, perhaps also by their " condition." These 

 comparisons and groupings of the data have yet to be 

 made and all the material exists in the card records of the 

 results of the experiments. 



Adding to the results of the year of liberation those 

 of the year following, we get some further information. 

 The recaptures of 1913 are indicated on the chart by the 

 name of a month (that of recapture), the date " '13," and 

 usually the size of the fish when it was recaptured. We 

 see now that few, if any, fish migrate from the Nelson 

 Buoy area into the Red Wharf one after the end of the 

 year. On the other hand, one fish had migrated to the 

 sea just East from the North-end of the Isle of Man (the 

 Bahama Bank grounds we may call this), and three have 

 made the same migration during the January immediately 

 following. A few fish were found during the first six 

 months of the year along the Lancashire and Cheshire 

 coasts, and some were found on the Nelson Buoy grounds 

 themselves during the summer and autumn of the year 

 following that of liberation : these were probably plaice 

 that had moved into the inshore waters, and had then 

 migrated out again about the beginning of the summer of 

 the following year. 



Considering even these two years' experiments alone, 



