191 



4r6 cm., was taken near Aberdeen, at a distance of 26i miles, and was " rather 

 immature." The male, of 26'7 cm., and " very immature," was taken to the 

 soutli-west of the Bell Rock, at a distance of 47 miles ; and the remainina female, 

 offshore, to the east of the Isle of May, at a distance of 35 miles ; it measured 

 42*5-42"8 cm., and was " nearly ripe." 



Seven were taken in November, 1 male and 6 females. The male and 3 of the 

 females were got to the north and west, 2 of the females off Aberdeen, at distances 

 of 25 and 28 miles respectively, and both were " nearly ripe " ; the other female 

 was found 4 miles to the north and west, and the male, which was "about half 

 ripe," 17 miles to the westwards. Of the 3 females which migrated to the 

 south and west, 1 was found east of the Isle of May, at a distance of 52 mdes ; it 

 measured 30 cm., and was " immature " ; the other 2, also under adult size, were 

 found near Montrose, at a distance of 39 and 42 miles. 



Only 1, a female, of 39-40"4 cm., and " half ripe," was got in December, 7 miles 

 to the north and west. 



Thus, in the second quarter, 12 of the marked plaice, or 21 per cent., were 

 recaptured, 7 (58"3 per cent.) at an average distance of 16*2 miles in the mean direc- 

 tion N. 45° W., and 5 (41"7 per cent.) at an average distance of 43 miles in the mean 

 direction S. 60° W. The feature of the chart is much the same as in the first quarter, 

 none of the fish being found north of Lat. 57° 15' N. 



Third Quarter — A male, described as " three-quarters ripe," was taken in 

 January 1912, to the north-east of the Bell Rock, at a distance of 24 miles to the 

 south and west ; it measured 29-5-31 "8 cm. 



Two males and 2 females were recaptured in February, 1 of the males 16i miles 

 to the north-east, the other male and the 2 females to the north and west, at dis- 

 tances of 7 and 10 miles One of the females, which moved 7 miles, was " fully 

 ripe," and measured 38-39-2 cm. 



None was taken in March. 



In this quarter, therefore, only 5 of the marked plaice, or 8-8 per cent., Nvere 

 recovered, 3 at an average distance of 9 miles in the mean direction N. 51° W., 1 to 

 the north-east and 1 to the south and west. The chart shows a change from the 

 pre^dous quarters, 4 of the 5 fish being taken to the north of the station, but none 

 north of Lat. 57° 57' N. 



Fourth Quarter. — A male and 3 females were got in April, 1 of the females to the 

 north and east, at a distance of 26 miles, and all the others to the north and west, 

 at rfiistances of 7, 9, and 13 miles respectively. One of the females was described 

 as " spent " ; it measured 37'5-40 cm., and was found 13 miles to the north and 

 west. 



In May, a male, " spent," was recaptured in the Moray Firth, at a distance of 

 100 miles to the north and west. 



In June, a male and two females were taken, the male 30 miles to the north and 

 west, 1 of the females 12 miles to the north and east, and the other 15 miles to the 

 south and west. 



In this quarter, 8 of the marked plaice, or 14 per ceiit., were recovered, 5 (62-5 

 per cent.) at an average distance of 32 miles in the mean direction N. 24° W. ; 2 

 (25 per cent.) 19 miles in the mean direction N. 49° E. ; and 1 to the soutn and west. 

 All bur one were fouad to the northwards of the station. 



Thus, in the first 12 months after liberation, 46, or 80-7 per cent., were 

 recaptured, the positions of 45 (78-9 per cent.) being known. Twenty-four (53*3 

 per cent.) were got to the north and west ; 17 (37-8 per cent.) to the south and west ; 

 3 to the north and east ; and 1 to the south and east. 



[Table. 



