220 



miles distant ; another female was taken 5h miles off Cape Wrath, 127 miles to the 

 south and west ; another 17 miles to the north and west ; 1 is described as having 

 been captured 178 miles E. by S. of Aberdeen (57° 20' N. ; 3° 30' E.), 187 miles 

 to the south and east. One female went to the north and east for 22 miles ; another 

 to the north and west for 30 miles, and the remaining female had no particulars 

 of capture recorded. 



In June, 25 of the marked plaice were recaptured, 15 males and 10 females. 

 Twelve of the males migiated to the south and west, all, with one exception, being 

 captured to the east of the Orkney Isles, at distances of from 33 to 43 miles from 

 the station ; the exception was taken off the north coast of Scotland, at a distance 

 of 79 miles to the westward ; 3 males had moved to the north and west ; 2 were 

 taken to the west of the Orkney Isles, off Stack Skerries, at a distance of 95 and 

 96 miles, and oae 6 miles off Foula, 52 miles distant. Of the females, 9 were 

 taken to the south and west, 8 of them being captured to the east of the Orkney 

 Isles, at distances of from 32 to 40 miles ; the other female was found in the Moray 

 Firth, off Portknoclde, on the south shore, at a distance of 102 miles ; the remaining 

 female was recaptured to the north and west, at a distance of 15 miles. 



In July, 4 males and 5 females were taken ; 2 of the males were found to tlie 

 south and west, at 14 and 41 miles, and 2 to the nortii and west, at 14 and 49 miles ; 

 the latter near Foula. Two of the females were taken to the south and west, at 

 14 and 21 miles, and 3 to the north and v.^est, at 10, 13, and 16 miles 



In this quarter, 50 fish, or 34 per cent., were recaptured, the place of capture 

 being known for 49 (33 3 per cent.), and of these, 34, or 69*4 per cent., migrated 

 a mean distance of 44 miles in the )nean direction S. 76° W., 13, or 26'5 per cent., 

 an average distance of 44 miles in the mean direction N. 54° W., while 1 moved 

 north and east, and 1 south and east. The migration chart shows a great concentra- 

 tion of the plaice to the east of the Orkney Isles, where most were recaptured. 



Fourth Quarter— A male and a female were taken in August, the male 36 miles 

 to the south and west, to the east of the Orkne}'S, and the female 17 miles to the 

 north and west. 



In September, a male was recovered 16 miles to the north and west, and in 

 October, another male 9 miles to the north ai\d west. 



In this quarter, only 4 fish, or 2*7 per ceat., were taken, 3 to the north and 

 west, and 1 to the soutn and west. 



In the 12 months immediately following liberatioii ] 10 marked plaice, or 74*8 

 per cent., were recaptured, of which 9 had no particulars given ; 71 (70"3 per cent.) 

 migrated to the south and west ; 27 (26*7 per cent.) to the north and west ; 2 to 

 the north and east, and 1 to the south and east. 



Of the remaining fish, 2 were taken in the remainder of 1911, 27 in 1912, 3 in 

 1913, and 3 in 1914. 



In November 1911, a male was taken off the Pentland Skerries, 60 miles to the 

 south and west, and in December, another male was recaptured 10| miles N.W. 

 by N. of Cape Wrath, on the west coast, 138 miles to the westwards. 



Two females were taken in January 1912, 1,15 miles to the north and west, 

 and the other 2-4 miles to the north and cast, off Sumburgh Head, Shetland. In 

 February, 4 males and a female were taken, the latter 48 miles to tlie south and 

 west, east of the Orkneys. All the males had moved to the westwards ; 1 was 

 taken oft' Strath ie Point, on the north coast, at a distance of 99 miles ; another 

 was found 6 miles W.N.W. of I^och Laxford, on the west coast, at a distance of 

 145 miles ; another south-west of Cape Wrath, at a distance of 144 mile?, and 

 the last 7 miles to the north and west, to the Butt of Lewis, at a distance of 169 

 miles. The 3 males last referred to had travelled at the mean rate of from 3 to 

 3'5 miles per 10 days. One male and 3 females were taken in March, the male 

 off Lossiemouth, in the Moray Firth, 100 miles to the south and west ; 1 of the 

 females was taken on the north coast, off Whiten Head, at a distance of 107 miles ; 

 another fartlicr north of the same place, at a distance of 102 miles, and the third 

 27 miles N.E. | E. of the Butt of Lewis, at a distance of 149 miles. A male and 

 2 females were recaptured in April, the male 7 miles E.S.E. from Stack Skerry, 

 west of tlie Orkneys, at a distance of 99 miles ; 1 female in the Moray Firth, south 

 of Tarbet Ness, at a distance of 92 miles to the south and west, and the other off 

 Cape Wrath, at a distance of 121 miles. Two females were taken in May, both 



