170 



Six fish, therefore, were recaptured in the second quarter, or 16*6 per cent., 3 

 to the north and west, 2 to the south and west, and 1 to the north and east. 



Third Quarter. — Only one fish was recovered in this quarter, a female, taken in 

 May, after 241 days, to the south-east of Tod Head, at a distance of 34 miles to the 

 north and west ; it measured 34-5-35"8 cm., and was " immature." 



Fourth Quarter. — Three females were taken in July ; 1, of 43-44 cm., and " im- 

 mature," after 288 days, offshore, to the south-east of Aberdeen, at a distance of 35 

 miles ; another, of 40-41-8 cm., after 313 days, 18 miles to the south and west ; 

 and the third, of 40*5-43'l cm., and " spent," after 310 days, 19 miles to the south 

 and west. 



Two females were recaptured in August, both " spent," and both after 335 days, 

 13 miles to the north and west. 



Three females were taken in September, 1, of 35-40"5 cm., after 360 days, 23 

 miles to the north and west, towards St. Andrews Bay ; another, of 38-44-4 cm., 

 after 349 days, off Ijongstone Light, at a distance of 40 miles to the south and 

 west ; and the third, of 37'5-39'9 cm., after 361 days, at Aberdeen Bank, a distance 

 of 34 miles to the north and east. 



Thus, in this quarter, 8 of the marked plaice, or 22*2 per cent., were recaptured, 

 3 (37-5 per cent.) to the south and west, 3 to the north and west, and 2 to the 

 north and east. 



In the 12 months after liberation, therefore, 23 fish, or 63'8 per cent., were 

 recovered, 9 (39-1 per cent.) to the north and west, 8 (34-8 per cent.) to the south 

 and west, 4 to the north and east, and 2 to the south and east. 



The following table gives particulars as to the mean distance and direction of 

 the plaice caught in the first year : — 



