229 



the male on the southern edge of the Dogger Bank (Lat. 54° 10' N. ; Long. 2° 42' E.), 

 at a distance of 315 miles to the south and east. Two females were taken in May, 

 both near Foula, at 44 and 47 miles ; in June, a female was recaptured on the 

 north coast, off Strathie Point, at a distance of 117 miles, and the last fish to be 

 taken, a female, was got in December 1913, after 1197 da}s. at the mouth of the 

 Firth of Forth. 205 miles to the south and west. 



The migrations of the marked plaice from this station aie of considerable 

 interest, and it may be worth while considering the subject as illustrated on the 

 migration charts. Thirty-one fish, recaptured in the first three months, had dis- 

 persed chiefly to the south and west, in the direction of the Moray Firth and the 

 east coast of Scotland ; three were taken on the eastern side of the north part of 

 the Shetlands, and 2 near the entrance to the Pentland Firth. All the fish, except 

 the two last-named, were taken between 0° and 2° W. Long., 3 of them between 

 60° and 61° N. Lat., 18 between 59° and 60° N. Lat., 8 between 58° and 59° N. Lat., 

 and 1 between 57° and 58° (south-east of Aberdeen). 



In the next three months (December 1910 ancl January and February 1911) 

 the majority of the fish were found more to the westwards, but still to the south, 

 the Unes radiating from the station to the east of the Orkneys, on the north, and 

 to the south shores of the Moray Firth oJi the south. Seven were taken between 

 0° and 2° W. Long., and 12 between 2° and 4° W. Long. ; none was got north of 

 60° N. Lat. ; 8 were fomid between 59° and 60° N. Lat., 8 between 58° and 59° 

 N. Lat., and 3 between 57° and 58° N. Lat. 



In the third quarter, March, April, and May, the migration lines run in the same 

 general direction, but moie of them penetrate farther to the westwards. Only 

 1 fish was taken to the northwards, while 21, or over 95 per cent., were got to the 

 south and west ; 7 were found to the east of the Orkneys, in the direction of the 

 Pentland Firth, 6 off the north coast of Scotland, and 1 on the west coast. Four 

 were found between 0° and 2° W. Long., 10 between 2° and 4°, and 6 between 4° 

 and 6°. One was recaptured between 60° and 61° N. Lat., 5 between 59° and 60 

 and 13 between 58° and 59°. 



In the fourth quarter, the same conditions as in the last are indicated, but the 

 number of fish found to the east of the Orknevs is greater. Twelve were got 

 between 0° and 2° W. Long., 11 between 2° and 4°',' and 5 between 4° and 6° W. Long. 

 Three were taken between 60° and 61° N. Lat., 16 between 59° and 60°, and 10 

 between 58° and 59°. 



In the chart showing the lines of migration for all the fishes recaptured, the 

 chief feature is the concentration to the south and west. A large number were 

 recovered to the south-east of Fair Isle, at comparatively short distances from 

 the station, and a still larger number were taken to the east of the Orkneys ; 10 

 were recaptured within the Moray Firth, 3 being taken off Banff, on the south 

 shore, and most of the others south-east of Noss Head ; 12 were got on the north 

 coast of Scotland, as far west as Cape Wrath ; 2 to the south of Cape Wrath, and 

 1 near the Butt of I^ewis, far to the westwards. A number were taken at Foula, 

 to the west of the Shetlands, and 4 on the north and east parts of these islands. 

 One was recaptured near the Oreat Fisher Bank, and another on the south edge 

 of the Dogger Bank, while 5 were found on the east coast of Scotland. The move- 

 ment in this direction of a number of fish from the Fair Isle stations is interesting 

 and remarkable, and is elsewhere dealt with. 



FTable. 



