SEA-FISHERIES LABORATORY. 249 



Bearing in mind that the fishes were liberated at about 

 the time of midsummer, we should expect to find, if the 

 results of the experiments already discussed hold good, 

 that an offshore migration would be exhibited. A glance 

 at Chart IV., where the positions of recaptures are 

 roughly plotted, will shew that these experiments do, 

 indeed, confirm the results already obtained. Most of the 

 fishes returned were recaptured during the three months 

 following liberation, that is during the time when we 

 should expect to find the offshore migration in progress. 

 It will be seen that there is practically no alongshore or 

 inshore migration. Only three fishes have entered the 

 territorial waters. No. LL171, from Experiment 10, 

 immediately on being liberated hurried off inshore, and 

 was caught on the same day in a stake net on Birkdale 

 shore. No. LL270, from Experiment 15, also travelled 

 inshore, and was recaught at the entrance to Horse 

 Channel by a second-class trawler. Finally No. LL178, 

 from Experiment 10, went inshore, and was caught off 

 Iloosebeck by a second-class trawler. But, with these 

 exceptions, there is a well-marked offshore migration to 

 be observed, the majority of the fishes returned being 

 recaught to the West of the place of liberation, Nelson 

 Buoy. Only one, No. LL20-3, went far afield, and was 

 recaught by a Douglas steam trawler S.S.E. from 

 Maughold Head. So far as has yet been observed, none 

 of these fishes has made the lengthy migrations of which 

 several instances have been noticed. 



Experiment 11, 13th June, 1906. 



Station : Off Pwllheli beach, Tremadoc Bay. 



Fish caught off Pwllheli beach and off St. Tudwall 



Islands 



