147 



recorded, was caught, after 152 days, 10 miles east by north of Hartlepool, 97 miles 

 to the south aud west ; another, of 41-10'8 cm., and the condition of whose testes 

 was not ascertained, was caught, after 154 days, at Aberdeen Bank, 39 miles to 

 the north and east ; the third male, which measured 35-37-8 cm., and the condition 

 of whose testes was not ascertained, was recovered south of Aberdeen Bank, at a 

 distance of 30 miles to the north and east. One of the females, of 40-39-3 cm., 

 and the condition of whose ovaries was not determined, was recaptured, after 

 150 days, at Aberdeen Bank, at a distance of 41 miles ; another, of 34-36'2 cm., 

 and described as " half-ripe," was taken, after 156 days, to the east of the Isle of 

 May, at a distance of 24 miles ; a third, of 40-40 cm., and " ripe," was taken, 

 after 164 days, off Banff, in the Moray Firtli, at a distance of 110 miles ; the 

 remaining female, which measured 38-5-39 cm., and was said to be " nearly ripe," 

 was caught, after 144 days, off the Orkney Isles, at a distance of 151 miles. 



Thus, in the second quarter, 14 fishes, or 22-9 per cent., were recaptured, 6 males 

 and 8 females. Two had moved directly west, 6 south and west, and 6 north 

 and east. 



Third Quarter. — Three females were recaptured in March 1912, but the position 

 of 1 was not recorded ; 1, measuring 41-5-41-7 cm., and "ripe," was taken near 

 Buchanness, at a distance of 60 miles, after 181 days ; the other, which measured 

 37-5-39-3 cm., and the condition of the ovaries of which was not known, was caught, 

 after 187 days, 19 miles to the north and east. 



In April, 5 were recaptured, 1 male and 4 females. The male, which was 

 39 cm. on Uberation, but whose size on recapture and the condition of the testes 

 were not ascertained, was taken, after 225 days, 11 miles S.S.W. of Sule Skerry, 

 off the north coast of Scotland, at a distance of 208 miles. All the females were 

 "immature " ; 1, of 36-37-7 cm., was recaptured, after 222 days, to the east of 

 the Isle of May, at a distance of 20 miles directly west ; another, of 39-5-41 cm., 

 was found, after 227 days, off Buchanness, at a distance of 65 miles ; the third, of 

 38-40-9 cm., was caught, after 229 days, to the south-east of Aberdeen, at a distance 

 of 32 miles ; the fourth, measuring 41-42-5 cm., was recaptured, after 231 days, 

 15| miles to the north and west. 



Two were got in May, a male, of 33-5-36 cm., after 262 days, at a distance of 

 only 2 miles to the east, and a female, of 36-5-39-5 cm., and " immature," after 

 261 days, ofishore, off the coast of Aberdeen, at a distance of 47 miles to the north 

 and east. 



In this quarter, then, 10 fishes, or 16-4 per cent., were recovered, viz. 2 males 

 and 8 females. The position of capture of 1 was unknown ; 1 was found to the 

 east, 1 to the west, 5 to the north-east, and 2 to the north-west. 



Fourth Quarter. — Five were recovered in Jmie 1912, 1 male and 4 females. The 

 male, of 34-38 cm., and described as " mature," was taken, after 276 days, 8 miles 

 to the south and west ; one of the females, measuring 41-44-6 cm., was caught, 

 after 286 days, 47 miles to the north and east, far ofishore ; another, of 40-5-45-2 

 cm., was caught, after 269 days, near Aberdeen, at a distance of 44 miles to the 

 north and east ; the third, of 38-5-42-6 cm., and described as " apparently spent," 

 was taken, after 273 days, 21 miles to the westwards ; the fourth female, measuring 

 40-5-42*1 cm., was fomid at a distance of 26 miles to the north and east, 



A female, of 39-o-42'2 cm., was taken in July 1912, after 314 days, to the north- 

 east of Aberdeen, at a distance of 51 miles. 



In August, 3 females were recaptured, all to the north and east. One, measuring 

 42-5-44*3 cm., and "about half-ripe," was captured, after 324 days, far offshore 

 (80 miles east of Buchanness ; 57° 51' N. ; 0° 20' E.) to the north and east, at a 

 distance of 112 miles ; another, of 39-5-43-5 cm., and " immature," was captured, 

 after 344 days to the north-east of Kinnaird Head, at a distance of 97 miles ; the 

 third female, of 41-43-2 cm., and described as "three-quarters ripe," was taken, 

 after 351 days, 50 miles N.N.E. of Buchanness, at a distance of 117 miles from 

 the station. 



In the first 12 months after liberation, 49 of the marked plaice, or 80-3 per 

 cent., were recovered, particulars as to position of recapture being recorded for 

 47. Nineteen (40-4 per cent.) travelled to the north and east ; 16 (34 per cent.) 

 to the south and west ; 6 (12-8 per cent.) to the north and west ; 4 (8-5 per cent.) 

 directly west ; and 1 each to the south-east and directly east. 



