120 



Li the first 3 months, May, June, and July 1912. the fish were recaptured fairly 

 evenly in all directions around the station, none at any great distance, and most 

 to the south and west, i.e. in the direction of the coast between Dunbar and St. 

 Abb's Head. In the second quarter, August, September, and October, the majority 

 of the fish were also got south and west, and this was also true in the third quarter, 

 November, December, and January. In the fourth quarter, only 1 was taken 

 in this direction. It is to be noted that all the fishes got to the south-west were 

 taken on practically the same ground, at a short distance from the place of libera- 

 tion, so that they did not make any definite migration as the months passed. 



The outstanding feature of this experiment is the migration to the north and 

 east, along the coast, which became evident in the second quarter, was ernphasised 

 in the third quarter, and was most conspicuous in the fourth quarter, when 88 per 

 cent, moved in this direction. It is to be observed that all these fish had migrated 

 considerable distances, some of them somewhat over 100 miles. 



The remaining fish in this experiment were recaptured as follows : — Seven 

 in 1913, in May, June, July, August, October, and December ; and 6 in 1914, 

 in February (3 fish), April, July, and September. The direction and distances 

 were ascertained for all those caught in 1913 ; 4 had migrated north and east, 

 viz. 3 females for distances of 8, 21, and 75 miles, and 1 male for a distance of 

 132 miles. The females were immature, except the 1 which had migrated 75 miles ; 

 it was taken in July, and is described as " apparently spent." The male, caught 

 in the Moray Firth in December, was "ripe." One of the fishes, a female, had 

 moved 4 miles to the south-west, and was taken in August " immature " ; another 

 female had gone directly east for 42 miles ; and a male was taken in October, 

 8 miles north-west of the station, and was " about half ripe." 



Of the 3 caught in February 1914 the particulars in regard to 1, a male, were 

 not ascertained. The other 2 were females ; 1, a large fish of 64 cm., was taken 

 after 660 days, .30 miles to the south-west (off Fidra), within the Firth of Forth, 

 and is described as " nearly ripe." The other had apparentl^^ a remarkable 

 journey. It was landed at G-rimsby, and is stated to have been caught at Lat. 

 53° 40' N. ; Long. 5° 15' E., or off Terschelling Island, on the Dutch coast, a 

 distance of about .300 miles from the place of liberation. It was described as 

 " spent." 



One fish, a male, moved to the north-west, and was taken at a distance of 

 8 miles, in April ; it was " ripe." One, also a male, had moved 156 miles north- 

 east, and was found near Pentland Skerries in July 1914, after 798 days, " mature." 

 The last, a female, caught in September, 10 miles directly west, was described 

 as "half ripe." 



[Table. 



