301 



IV. In the Moray Firth, at 57° 47' N. ; 3° 17' W., where the depth is 13-15 

 fathoms, 10, consisting of 3 males, 5 females, and 2 whose sexes were not deter- 

 mined, were liberated on 26th April 1910. Three were recaptured, viz. a male 

 in June 1910, in the Pentland Firth, 79 miles to the northwards ; and 2 females, 1 

 in March 1911, off Tarbet Ness, 13 miles to the north and west, and the other in 

 April 1911, in the vicinity of Tarbet Ness, 6 miles to the north and west. 



V. On 26th Aprd 1910, 22 were set free in the Moray Firth, at 57° 53' N. ; 3° 14' 

 W., in a depth of 28-32 fathoms ; they consisted of 11 males, 8 females, and 3 of 

 undetermined sex. Five, or 22 '7 per cent., were recaptured, 3 males, 1 in January 

 1911, at a place unknown ; another in March 1911, 13 miles to the north and west, 

 and the third in July 1911, at a place unknown. Two of undetermined sex were 

 caught at unspecified localities in the Moray Firth in July and September 1910. 

 The fish about which particulars are absent were caught by foreign trawlers and 

 landed at Ostend. 



VI. On 27th July 1910, 1 male and 2 females were marked and liberated at 

 57° 51' N. ; 3° 16' W., and the male, alone, was recaptured, on March 1911, in the 

 North Minch, on the west coast, at a distance of 152 miles, the rate of movement 

 being 6"5 miles per 10 days. This fish measured 38"5-38"6 cm., and was " spawning " 

 when captured. 



DOGGER BANK. 



On 15th October 1913, 2 females were marked and liberated at 54° 52' N. ; 

 0° 57' E., west of the Dogger Bank, in 41 fathoms, and both were recaptured, 1 in 

 October 1913, after only 9 days, at a position given as 166 miles E.S.E. of the 

 Longstone Light, 91 miles N. 80° E., which is evidently wrong ; the other was 

 recaptured in June 1914, 5 miles to the north and east. 



NORTH-WEST OF GREAT FISHER BANK. 



On 17th June 1913, 4 marked female plaice were set free at a position 127 miles 

 E. by S. I S. of Buchanness (57° 30' N. ; 2° 10' E.), in a depth of 36 fathoms. One 

 was got in December 1913, 48| miles E. by S. of the Isle of May, 130 miles to the 

 west and south ; it was landed by an English trawler at Boston. 



OFF KINNAIRD HEAD. 



On 29th July 1910, 12 marked plaice, consisting of 6 males, 1 female, and 5 of 

 unknown sex, were liberated, 2 off Kinnaird Head (57° 41' N. ; 1° 55' W.) in a depth 

 of 5 fathoms. Four were recovered, 3 males and 1 of undistingiiished sex. The 

 latter was taken in September 1911, 6 miles to the south and east ; 2 of the males 

 were recaptured in March 1911, both in the Moray Firth, one ofi Buckie, 33 miles 

 to the north and west, and the other off Tarbet Ness, 62 miles to the north and west ; 

 the third male appears to have been taken in Morecambe Bay, Lancashire, at the 

 beginning of April 1911. The mark and wire were sent to me by Dr. J. Johnstone, 

 with a note from Captain Wignall of the Lancashire S.F.D. Committee Steamer 

 " James Fletcher," to the effect that the mark was taken from the fish on the 

 Fleetwood Landing Stage on 6th April 1911. It could not be ascertained which 

 boat caught the fish, but " it was caught in Morecambe Bay." Dr. Johnstone 

 kindly informed me that the trawlers speak of the area between Morecambe Bay, 

 the coast between Cumberland and Ribble and the Isle of Man, as " Morecambe' 

 Bay," and he was of opinion that the fish was probably caught on the Lancashire 

 coast. The distance between the place of liberation and Morecambe Bay is about 

 470 miles, and, as the interval between the date of liberation and recapture was 

 248 days, the mean rate of movement per 10 days would be 19 miles. 



OFF TOD HEAD, KINCARDINESHIRE. 



On 6th July 1912, 6 plaice, 3 males and 3 females, were marked and liberated 

 27 miles E.S.E. i S. of Tod Head (56° 48' N. ; 1° 24' W.) in a depth of 34 fathoms. 

 Five were recaptured, 2 males and 3 females. One male was taken in February 

 1913, south and east of Aberdeen, 38 miles to the north and east, and the other in 



