24 



miles to the north and east ; 1, 13 miles to the north and east of the station ; and 

 another at a distance of 51 miles north and east. Of the 2 which migrated south 

 and east, 1 was taken at a distance of 17 miles, and the other at 28 miles, both off 

 shore. Of the 6 which went south-west, 1 was got at a distance of 21 miles, of? Tod 

 Head ; 1 off Fife Ness, at 52 miles distant ; and another E.S.E. of May Isle, at a 

 distance also of 52 miles ; the fourth was got off Bell Rock, at a distance of 42 miles ; 

 the fifth was recaptured 59 miles distant, 10 miles off the Isle of May ; and the 

 sixth, 8 miles E. | S. of Tynemouth, at a distance of 114 miles, 



(4) ABERDEENSHIRE COAST. 



From the experiments south-east of Cruden Scaurs, 5 recaptured plaice were 

 " ripe," 4 males and a female. They were all taken in the Moray Firth, 2 at Banff, 

 at distances of 61 and 62 miles, 1 off Buckie, at 74 miles, and the other 2 on the coast 

 of Caithness, at distances of 91 and 95 miles. 



(5) MORAY FIRTH. 



From the experiments at Smith Bank, 21 " ripe " fish, viz. 17 males and 4 

 females, were recaptured. Fifteen of these were taken in the Moray Firth, 10 to 

 the north and west, at distances of from 5 to 42 miles, several in the neighbourhood 

 of the Dornoch Firth, and the others on the Caithness coast ; 1, 23 miles to the 

 west ; 2, 10, and 39 miles to the south and west ; 1, 14 miles to the north and east ; 

 another, 12 miles to the north and east ; 1, off the mouth of the Pentland Firth, 

 at a distance of 31 miles to the north and east ; and 4 on the north coast of Scotland, 

 off Dunnet Head and Strathie Point, at distances of from 48 to 67 miles. 



Ten, 6 males and 4 females, were recaptured from the experiment at Burghead 

 Bay ; the position of 1 of the females was not ascertained ; of the others, 7 were 

 •taken in the Moray Firth, 1 at a position unspecified, and 5 of the others on the 

 south coast, and 1 on the coast of Caithness, at distances of from 2h to 38 miles ; the 

 other 2 were recaptured near Sule Skerry, off the north coast of Scotland, at dis- 

 tances of 106 and 110 miles. 



From the experiments off Tarbet Ness, 8 were recaptured, viz, 6 males and 



2 females. Six were taken at the mouth of the Dornoch Firth, at from 11 to 

 15^ miles to the westwards, and the other 2 on the north coast of Scotland, near 

 Strathie Point, at distances of 80 and 85 miles. 



One "ripe " fish, a male, was recaptured from the experiment in Nairn Bay, 

 in November 1913 ; it was taken near Tarbet Ness, 22 miles to the north and 

 east. 



(6) FAIR ISLE. 



Twenty-nine " ripe " fish were recovered from the experiments near Fair 

 Isle, 25 males and 4 females. Of these, 24 were found to the south and west, 



3 at short distances, 15, 18, and 21 miles, towards the Orkneys ; 6 to the east and 

 south-east of Auskerry, on the east side of the Orkneys, at distances of from 32 to 

 50 miles ; and 1 farther to the south-west, towards the Pentland Firth, at a 

 distance of 57 miles ; 1 was recaptured off the Moray Firth, east of Noss Head, 

 at a distance of 56 miles ; and other 3 south-east of Noss Head, at distances of 

 73, 76, and 105 miles ; 2 were recaptured near Banff, on the south coast, at distances 

 of 116 and 117 miles ; 6 were taken on the north coast of Scotland, at distances of 

 from 100 to 145 miles, and 1, 10 miles W.S.W. of Cape Wrath ; another was caught 

 6 miles S.E. of Tod Head, on the east coast, at a distance of 153 miles ; 1, 8 miles 

 to the north and east ; 3 near Foula, Shetland, at 45 to 49 miles to the north 

 and west ; and 1, 7 miles E.S.E. of Fetlar, at the north of the Shetlands, at a 

 distance of 65 miles to the north and east. 



4. Relation of the Migration to the Prevailing Current. 



A considerable number of years ago, in papers pubhshed in the Annual Reports 

 of the Fishery Board for Scotland, I showed that an important relation existed 

 between the prevailing surface current in the North Sea, and the life-history of 



