62 



Fifteen turbot were marked on August 2nd at Druridge, and, 

 as will be observed, four were returned to us, but this was the best 

 result. The fiist (1) of the recaptured fish showed no migration 

 during the same summer, the second (2) an outward and northerly 

 migx-ation in the ensuing winter, the others were captured after a 

 longer period of absence. Spawning does not appear to take place 

 to any marked extent in the northern North Sea, nevertheless our 

 inshore waters receive young and spent fish in summer. The 

 spawning season is April to August, and at or about that season 

 the fourth example was got 110 miles E. by N. of the place of 

 liberation. No. 5 was obtained after an absence of nearly four 

 years 75 miles to the south. Nos. 6 and 7 were recaptured off the 

 east coast of Scotland. 



The evidence is not complete enough to establish definitely 

 the migrations, but taken with that of the distribution before 

 described, it is evident that the outward migration is to the north- 

 east, and the spawning migration to the north. The spent fish, 

 as No. 5 indicates, may perform a long migration to the south, 

 but how far and in what direction it had migrated during its years 

 of absence one cannot say. 



A few soles and other species were marked, but no recaptures 

 were reported. 



Platce. — Large numbers of plaice were marked in the years 

 1903, 1904, 1909 and 1913. The results so far as the recaptures are 



