13G 



for a distance of 8 miles ; the last-mentioned fish was 41-5 cm. long on Uberatlon. 

 One of the females was got 16 miles to the north and west, east of St. Andrews 

 Bay ; the second was taken 20 miles to the north-east ; and the third 44| miles 

 to the north and east, off the coast of Aberdeen. 



Thus, in the first 3 months after liberation, 13 fish, or 20-3 per cent, of the 

 total recaptured, were taken ; 4 (30-8 per cent.) had moved to the north and east, 

 to the north and west, and directly west for distances respectively of 21, 21, and 

 10 miles, at average rates per 10 days of 2*9, 13-6, and 7-4 miles. The remaining 

 fish had moved 2 miles to the south and west. 



Second Quarter. — In July, 2 males and 3 females were recaptured ; 1 of the males 

 had moved for 10 miles directly east, and the other {'or 5 miles to the south and west. 

 Two of the females had also moved south and west, 1 for a distance of 5 miles, and 

 the other for 8 miles ; the remaining female was caught 19 miles to the north-west, 

 after 106 days. In August, 9 fish were recaptured, 3 males and 6 females, but the 

 position of recapture of one of the females was not ascertained. The 3 males 

 had migrated to the north-east, and were taken at distances of 25, 27, and 52 miles, 

 off the coasts of Forfarshire and Aberdeenshire. A female had also moved in the 

 same direction, for a distance of 7 miles, while 2 females had moved 6 and 8 miles 

 respectively to the south-west ; another female had migrated 10 miles directly 

 east, and the last 24 miles to the south-east, to the east of St. Abb's Head. In 

 September, 3 females were recaptured, one 4 miles directly west, after 173 days, 

 one 6 miles to the south-west, after 165 days, and one 21 miles to the north and 

 west, after 184 days. Thus, in the second quarter after liberation, 17 fishes, or 

 26-6 per cent., were recaptured, the position of recapture being known for all but 

 1. Five (3r2 per cent.) went to the south and west for an average distance of 

 6 miles, the mean rate of travel being -5 mile in 10 days ; 4 (25 per cent.) had 

 moved an average distance of 28 miles to the north and east, the mean rate per 

 10 days being 1*8 miles ; 3 (18-8 per cent.) had gone an average distance of 16 miles 

 to the north and west, at a mean rate of '8 mile per 10 days ; 2 had gone directly 

 east, each for 10 miles, and 1 directly west for 4 miles, while the remaining fish 

 was found 24 nules to the south and east. 



Third Quarter. — In October, 1 female was recaptured, 13| miles to the north- 

 west, after 203 days. A female was also taken in November, 12 miles to the 

 north-west, after 226 days, while in December, 2 males and 2 females were got ; 

 1 of the males was found 14 miles north and west, after 273 days, and the other 

 73 miles to the north-east, off the coast of Aberdeen, after 270 days ; 1 of the females 

 had also migrated to the north and east, for a distance of 58 miles, while the remaining 

 female was captured 9 miles to the south and east, after 251 days. 



Six fish, or 9*4 per cent., therefore, were taken in these 3 months. Three of 

 them (50 per cent.) went an average distance of 13 miles to the north and west 

 the mean rate of movement being '6 mile per 10 days ; 2 (33*3 per cent.) went 

 a mean distance of 65 miles to the north and east, the rate of travel being 2*4 miles 

 per 10 days ; the remaining fish was taken 9 miles to the south-east, the mean rate 

 being '3 mile. 



Fourth Quarter. — In January 1914, a male was taken in the Moray Firth, off 

 Banff, at 113 miles distant, the mean rate of travel being 3*6 miles per 10 days. 

 Two males and 2 females were taken in February ; 1 of the males was found on 

 the north coast of Scotland, near \\liiten Head, at a distance of 215 miles, after 

 324 days, the mean rate of travel being 6-6 miles per 10 days ; it was " ripe." 

 The other male, which also was " ripe," was taken in the Moray Firth, at a distance 

 of 148 miles, after 330 days, the average rate of movement being 4*5 miles. The 

 females had not moved far ; 1 was got 11 miles to the north-west, after 330 days, 

 and the other 17 miles to the south-east, also after 3.30 days ; these fish had moved 

 at a mean rate of respectively "3 and '5 mile. In March, 2 males and 2 females 

 were recaptured ; 1 of the males was taken in the Moray Firth, ofi Clythness, 140 

 miles distant, after 343 days ; the other was caught 21 miles off Hartlepool, 102 

 miles in the opposite direction, after 102 days ; the mean rate of travel in these 

 two cases was respectively 4-1 and 2*9 miles per 10 days. One of the females was 

 taken, after 343 days, 28J miles to the north-west, in the Firth of Forth, near the 

 place of original capture ; the other was caught north-east of Kinnaird Head. 



