178 



east, 2 females to the south-west, and all the others to the north-west. A male and 

 a female were taken in the Moray Firth, at distances of 93 and 102 miles. One of 

 the males was caught off Kinnaird Head at a distance of 51 miles ; a female, which 

 measured 26"5-3r8 cm., was recovered at the mouth of the Tay, 56 miles to the 

 south-west. A male and a female were found to the south-east of Aberdeen at 21 

 and 8 miles distant, while a female went 26 miles to the south-west. 



In May, 9 were taken, 3 males and 6 females. Two of the males had moved to 

 the north-west ; 1 was taken off Buchanness, at a distance of 33 miles, and the 

 other in the Moray Firth at 98 miles distant ; the remaining male was found 15 

 miles to the south and west. Two of the females had moved to the north and west 

 for distances of 8 and 36 miles respectively ; 1 was found 12 miles to the north and 

 east, and 2, 16 and 45 miles to the south and west ; the remaining female migrated 

 for 19 miles directly west. 



In this quarter, 29 fishes, or 14*4 per cent., were recaptured ; 19 (65"5 per cent.) 

 moved an average distance of 49 miles in the mean direction N. 21° W., at the mean 

 rate of 1'5 miles ; 5 (17"2 per cent.) moved a mean distance of 32 miles in the mean 

 direction S. 49° W., at an average rate of "9 mile ; 3 (10-3 per cent.) moved to the 

 north and east ; and 1 each to the west and to the south and east. 



Altogether, in the 12 months after liberation, 145 of the fishes, or 72-1 per 

 cent., were recaptured, the positions of 4 not being ascertained. 



Of the remaining 141 (70-1 per cent.). 68 (48-2 per cent.) were found to the 

 north and west ; 40 (28*4 per cent.) to the south and west ; 20 (14-2 per cent.) 

 to the north and east, 11 (7-8 per cent.) to the south and east, and 2 directly west. 



A summary of the mean distance and direction in each quadrant, for the first 

 year after Uberation, is given in the following table :— 



