219 



taken in the " Moray Firth," and landed at a foreign port ; the others had all moved 

 to the south and \vest ; 1 was taken at the Shetland Isles, 45 miles away ; another, 

 at the entrance to the Pentland Firth, at a distance of 63 miles ; 1 was recaptured 

 on the north coast, off "Wliiten Head, at a distance of 116 miles ; and the remaining 

 female was taken near Aberdeen, at a distance of 137 miles ; the latter had moved 

 21 -1 miles in 10 days. 



In this quarter, therefore, 22 fish were recovered, or 14-9 per cent., 16 (73 per 

 cent.) to the south and west and 6 (27 per cent.) to the north and west. An 

 examination of the chart shows the general movement south-west to the northern 

 part of the Moray Firth, and, in the case of 3 of the fish, southwards to the coast of 

 Aberdeen or Kincardine. 



Second Quarter. — In February 1911, 3 males and 2 females were caught, 1 of the 

 males in the " Moray Firth " by a foreign trawler ; another to the east of the 

 Orkneys, 36 miles to the south and west, and the third to the west of the Orkneys, 

 8 to 10 miles S.S.E. of Sule Skerry, at a distance of 100 miles. One of the females was 

 taken to the north and west, off Noup Head, Orkneys, at a distance of 68 miles ; the 

 other, north-east of Rattray Head, at a distance of 81 miles to the south and west. 



In March, 8 males and 3 females were recaptured, all to the south and west ; 

 1 of the males and 1 of the females were taken in the " Moray Firth," and landed 

 at a foreign port ; another female was taken east of the Shetland Isles, at a dis- 

 tance of 36 miles ; the remaining female was captured north of ICinnaird Head, 

 at a distance of 79 miles ; of the males, 1 was got at the same place, off Kinnaird 

 Head, at a distance of 79 miles ; another, on the north coast, off Sandside Bay, 

 at 95 miles distant ; 2 others were taken also on the north coast, farther to the 

 westward, off Rabbit Island, at a distance of 112 miles ; another was captured 

 close to Tarbet Ness, in the Moray Firth, at 123 miles distant ; the 2 remaining 

 males had migrated to the west coast, 1 being taken 10 miles W.S.W. from Cape 

 Wrath, at a distance of 138 miles, and the other in the Gairloch (57° 43' N. ; 5° 43' W.) 

 at a distance of 208 miles ; the rates of movement of the last 2 were respectively 

 10'5 and 16-4 miles per 10 days. 



In April, 18 of the marked plaice were recaptured, consisting of 7 males, 10 

 females, and 1 whose sex was not ascertained. Two of the females were taken by 

 foreign trawlers in the Moray Firth, the position unspecified ; a third female was 

 recovered to the north-west of the Shetlands, off Ronasvoe, at 86 miles to the 

 north-east ; a fourth was taken off Foula, 51 miles to the north and west ; the 

 others were got at the following localities : — 36 miles to the south-west, off Auskerry ; 

 85 miles to the south-west, off Kinnaird Head ; 41 miles to the south-west, off 

 Auskerry ; 35 miles to the south-west, east of the Orkney Isles ; 72 miles to the 

 south-west, south-east of Noss Head ; and 12 miles W. ^ N. of Cape Wrath, at a 

 distance of 140 miles. Of the males, 1 was taken 41 miles to the north-west, at the 

 Orkney Isles ; another, south-west of Cape Wrath, at a distance of 131 miles ; 

 another, east of the Orkney Isles, 41 miles to the south and west ; the fourth, east 

 of the Shetlands, at 37 miles to the south and west ; the fifth, on the north coast, off 

 Whiten Head, at 109 miles distant ; the sixth, 63 miles to the south-west, off Noss 

 Head ; the remaining male was recaptured 16 miles east of the Bell Rock, at a 

 distance of 170 miles to the south and v/est ; the fish whose sex was unknown was 

 taken east of the Orkneys, at a distance of 40 miles to the south and west. 



Thus, in the second cjuarter, 34 fish, or 23"1 per cent., were recaptured, 29 

 (85-2 per cent.) to the south and v/est, 4 (11*8 per cent.) to the north and west, and 

 1 to the north and east. The migi-ation chart shows the same general features as 

 in the first quarter, v/ith this difference that several of the fish were found to the 

 westwards, towards Cape Wrath, and south of it, and a considerable number east 

 of the Orkney Isles, and some northwards towards the Shetlands. 



Third Quarter. — In May, 2 males and 14 females were recaptured, the position 

 of 1 of the females not being ascertained. The 2 males were taken to the south- 

 west, east of the Orkneys, at 37 and 45 miles to the south and west. Eight of the 

 females were also got to the south and west, 5 east of the Orkneys, at distances of 

 from 36 to 44 miles ; 1 was taken far in the Moray Firth, to the north-east of 

 Tarbet Ness, 102 miles to the south and west ; another near the Pentlaud Firth, 

 52 miles to the south and west ; 1 on the north coast, off Strathie Point, about 100 



