90 



in October, was " immature." One, a female, was recaptured near Fair Isle, 

 184 miles away, in September ; it was " spent." Two of the fish, both females, 

 were recaptured off the coast of Aberdeen, at distances of 56 and 75 miles ; 1 

 of these, taken in January, and measuring 42 '5 cm. when liberated, is described 

 as " rather immature " ; the other, caught in June, was " immature." The sixth, 

 a female, had gouvj 33 miles, and was taken, also in July, off Tod Head, " im- 

 mature." One fish, a female, was caught in June 4 miles to the north-west ; 

 it was " spent." The eighth fish had migrated to the south-west, namely, a male, 

 caught 4 miles from the place of liberation in December ; it was " nearly ripe." 



Of the 6 fishes caught in 1913, five were females, and 1 was a male. They had 

 all moved northwards, along the coast, and had migrated distances of from 64 to 

 ! 90 miles. The male was taken in September near Fair Isle, and was " immature." 

 Of the 5 females, 1 , caught in March off the Orkney Islands, was " spawning " ; 

 another, taken in March, ofi Buchanness, was " nearly ripe " ; the third, caught in 

 May, in the same neighbourhood, was " spent " ; the fourth, recaptured in June, 

 off Noss Head, in the Moray Firth, was " immature " ; the condition of the ovaries 

 of the fifth, which was taken north-east of Kattray Head in July, was not ascer- 

 tained. 



None of the marked fish belonging to this experiment was caught in 1914, but 1, 

 a female, was recaptured on 13th March 1915, after 1566 days of freedom, only 11 

 miles south and east of the station ; it was " spent." 



In 1916, a male was caught on the 2nd February, after a period of freedom of 

 1892 days, or 5 years and 2 months. This fish Avas found in London, among fish 

 from Scarborough, but, unfortunately, the place of capture was not ascertained ; 

 the fish was described as " spawning." 



The summary of the resultant direction and distance in each quadrant is as 

 follows : — 



Table. 



