Hi 



The following table gives the mean distance and direction in each quadrant for 

 all the fish recovered from the experiment : — 



Distances travelled— 10 miles and under.^TliTee of the marked plaice Avere 

 recaptured at distances of 6, 6|, and 10 miles, 2 males and 1 female, 2 to the west- 

 wards and 1 to the northwards. 



10 to 20 miles. — Six fishes, or 16-2 per cent., were caught at distances of fiom 12 

 to 19 miles, viz. 2 males and 4 females ; botli the males and 3 of the females had 

 moved to the south and west, and the remaining female to the north and west. 



Under 20 miles. — Thus, 9 of the plaice, or 24-3 per cent., were recaptured at 

 distances of less than 20 miles, 4 being males (21 per cent.) and 5 females (29-9 

 per cent.). 



20 to 50 miles. — Twenty of the recaptured plaice were found at distances of 

 from 23 to 45 miles, or 54-2 per cent., viz. 12 males (63-2 per cent.) and 8 females 

 (44-4 per cent.). Four of the males and 1 of the females were caught to the south 

 and west ; 4 males and 3 females to the north and west ; 1 male and 1 female 

 directly west ; 3 males and 3 females north and east. 



50 to 100 miles. — Seven, or 18-9 per cent., were taken from 56 to 83 miles away, 

 2 males (10-5 per cent.) and 5 females (27-8 per cent.). One of the males and 4 of the 



