80 



off the Isle of May ; the third female, also in the Firth of Forth, off Pittenweein, 

 9 miles to the north and east ; 1 of the males, 11 miles to the north and east, near 

 Fife Ness ; a second, offshore, S.S.E. of Aberdeen, at a distance of 57 miles to the 

 north and east ; and a third, a little farther north, at a distance of 69 miles ; the 

 fourth was captured offshore to the south-east of Buchanness, at 99 miles distant 

 to the north and east ; the fifth was found in the Moray Firth, off Dunbeath, 

 Caithness, at a distance of 166 miles; the mean rate of movement of this fish was 

 19-5 miles per 10 days. 



In this quarter, 13 of the marked plaice, or 18"6 per cent., were recovered, 

 9 (69'2 per cent.) to the north and east, at an average distance of 76 miles in the 

 mean direction N. 50° E. ; 3 (23"1 per cent.) to the north and west, and 1 to the 

 south and east. 



Second Quarter.— YWe females and 3 males were recaptured in March 1913, all 

 but 1 to the north and east ; the exception, a female, was taken in the Firth of 

 Forth, near Largo, 7 miles to the north and west ; another female was recaptured off 

 Pittenweem in the Firth of Forth, at a distance of 8 mile? to the north and east ; 

 a male was taken 27 miles to the north and east, near the Bell Rock, and a female off 

 Fife Ness, at a distance of 15 miles. Thiee of the fish, 2 females and a male, were 

 found in the Moray Firth, the 2 females off Banff, at a distance of 145 miles, and the 

 male on the west side of Smith Bank, at a distance of 163 miles ; the remaining male 

 was caught south-east from Auskerry, Orkney Isles, at a distance of 191 miles. 

 The mean rates of movement of the 3 fish found in the Moray Firth were respectively 

 12-5, 13-5, and 18-3 miles, and that of the fish which went to the Orkneys, 18-9 

 miles per 10 days. 



Three males and 3 females were taken in April, all to the north and east ; 1 of 

 the females was recaptured off Pittenweem, in the Firth of Forth, at a distance of 

 9 miles; another was taken offshore, south-east of Aberdeen, at a distance of 57 

 miles ; another was caught near Buchanness, at a distance of 84 miles, and 1 in 

 Peterhead Bay, 90 miles away ; another male was taken north-east of Rattray 

 Head, at 108 miles distant, and a female near Berriedale Ness, Moray Firth, at a 

 distance of 170 miles. 



One male and 4 females were taken in May, the male in the Firth of Forth, near 

 Largo, at a distance of 6 miles to the north and Avest, and 1 of the females 31 miles 

 to the eastwards, offshore. The other 3 females were found to the north and east, • 

 1 at a distance of 14 miles, north-east of the Isle of May, 1 far offshore, south-east 

 of Buchanness, at a distance of 97 miles, and the other near Buchanness, at a 

 distance of 91 miles. 



In this quarter, therefore, 19 of the marked plaice, or 27-1 per cent., were 

 recaptured, 16 {84"2 per cent.) to the north and east, at an average distance of 88 

 miles in the mean direction N. 47° W. ; 2 (10-5 per cent.) to the north and west, and 

 1 to the south and east. 



Third Quarter. — Two males and 2 females were recovered in June, all to the 

 north and east, rather offshore, at distances of 37, 43, 43, and 58 miles. 



None was recovered in July or August, so that these 4 fish represent all the 

 recaptures in this quarter, or 5-7 per cent. 



Fourth Quarter. — Two females were taken in September, both to the north and 

 east, 1 south-east of Aberdeen, at a distance of 52 miles, and the other near Buchan- 

 ness, at a distance of 83 miles. 



Three males and 2 females were found in October, all to the noitli and east. 

 A male was caught east of the Bell Rock, at a distance of 28 n iles, and 1 fen ale far 

 offshore, north-east of the Bell Rock, at a distance of 81 miles ; the other female 

 was recaptured near Buchanness, at a distance of 83 miles, and the remaining 2 

 males off Noss Head, Caithness, at distantn^s of 160 and 167 miles. 



A male was recaptured in November, off Tod Head, at a distance of 57 miles 

 to the north and east. 



Thus, in the fourth quarter, 8 of the marked plaice, or 11-4 per cent., were 

 taken, all to the north and east, at an average distance of 89 miles in the mean 

 direction N. 50° E. 



In the 12 months after liberation, 44, or 62-8 per cent., were recovered, 37 

 (84-1 per cent.) to the north and east ; 5(11-4 per cent.) to the north and west, and 2 

 to the south and east. The quarterly charts are remarkable as showing the pre- 



