177 



Second Quarter. — In September, 17 of the liberated plaice were recovered, 11 

 males and 6 females. Three of the males were found at distances of from 15 to 48 

 miles to the south and west, 5 at distances of from 8 to 35 miles to the north and 

 west, 2 at 16 and 30 miles to the north and east, and 1, 8 miles to the south and east. 

 Three of the females were recaptured at distances of from 14| to 45 miles to the south 

 and west, 1, 13 miles to the north and east, another 8 miles to the south and east, 

 and 1, 9| miles to the north and west. 



In October, 17 were recaptured, 10 male!= and 7 females. Four of the males were 

 taken at distances of from 4 to 48 miles to the south and west ; 4 were found at 

 distances of from 7i to 21 miles to the north and west ; and 2 at 16| and 20 miles 

 to the north and east. Three of the females were recaptured at 10 miles to the 

 south and west ; 2 at 6 and 7i miles to the north and west ; 1 at 10 miles to the 

 north and east ; and 1, 8| miles to the south and east. 



In November, 13 fish were go^^, but the place of capture of 1, a male, was not 

 ascertained. Th*^^- others consisted of 5 males and 7 females. Three of the males 

 were taken at distances of from 24 to 37 miles to the north and west, and 2 at 17 and 

 52 miles respectively to the south and west. Two of the females were taken at 40 

 and 45 miles to the south and west ; 3 at distances of from 17 to 114 miles to the 

 north and east ; and two 24 and 30 mdes to the north and west. 



Thus, in the second quarter, 47 of the marked plaice, or 23" 4 per cent., were 

 taken ; the position of capture of 1 was not ascertained, and of the remaining 46 

 (22-9 per cent.) 17 (36"9 per cent.) migrated an average distance of 29 miles in the 

 mean direction S. 51° W., at a mean rate of 2-4 miles per 10 days ; 17 (36'9 

 per cent.) moved an average distance of 17 miles in the mean direction N. 37^^ W.. at 

 a mean rate of 1"7 miles ; 9 (19"6 per cent.) went a mean distance of 29-8 miles in 

 the mean direction N. 27° E. ; and 3 (6"5 per cent.) migrated an average distance of 

 8"1 miles in the mean direction S. 42° E., at the mean rate of '7 mile per 10 days. 



Third Quarter. — Ten were recovered in December, 5 males and 5 females, but the 

 place of capture of 1 male and 1 female was not ascertained. Two of the remaining 

 males were found at 23 and 30 miles to the north and west, 1,11 miles to the south 

 and west, and 1, 18 miles to the south and east. Two of the females were taken at 28 

 and 30 miles to the north and west, and 2 at 20 and 44 miles to the south and west. 



In January 1911, 2 males and 1 female were recovered all to the north and west, 

 one of the males at a distance of ]6| miles and the other off Banfi, in the Moray 

 Firth, at a distance of 77 miles ; the latter was " ripe and running." The female was 

 caught near Buchan Ness, at a distance of 40 miles. 



Fourteen w^ere taken in February 1911, 9 males and 5 females. All these fish 

 were also recaptured to the north and west, 2 males and a female off Banff, in the 

 Moray Firth, at a distance of 77 miles ; the female was " nearly ripe," and the 

 males " spawning." One of the males had made a long journey, and was recaptured, 

 after 257 days, 13 miles S.W. by "W. of Cape Wrath (58° 26' N. ; 5° 14' W.), a distance 

 of 199 miles, the mean rate of migration being 7-7 miles per 10 days ; it was " ripe." 

 Three males were taken near Aberdeen, at distances of .30i and 34 miles. A male 

 and 2 females were got near Buchanness, at distances of 34, 37, and 39 miles ; a male 

 was caught npar Montrose, at a distance of 43 miles, and 1 near Tod Head, at a 

 distance of 31 miles. A female was recovered off Buchanness at a distance of 26 

 miles, and another only 4 miles from the place of hberation. 



The number recaptured in this quarter was 27, or 13"4 per cent., the 

 place of capture of 2 not being ascertained. Of the remaining 25 (124 per cent.), 

 22 (88 per cent.) migrated an average distance of 45 miles in the mean direction 

 N. 35° W., at a mean rate of 1*9 miles per 10 days ; 2 (8 per cent.) moved south and 

 west, and 1 south and east. 



Fourth Quarter. — In March 1911, 13 of the marked plaice were recaptured, 

 7 males and 6 females. They were all found to the north-west, with one exception, 

 a male, recaptured 11 miles to the north and east. Three of the males were takeii 

 in the Moray Firth, at distances of 77, 93, and 103 miles. A female was recaptured 

 east of the Orkney Isles, a distance of 97 miles. A male was taken north of 

 Kinnaird Head, at a distance of 64 miles. Five of the fishes, 2 males and 3 females, 

 were taken to the south-east of Aberdeen, 4 at distances of 8 and 1 at 10 miles. Two 

 females went 32 and .34*5 miles to the northwards, being taken off Buchanness. 



In April, 3 males and 4 females were recaptured, 1 male and 1 female to the north- 



