33 



One male and 3 females were recaptured between 3 and 4 years after they 

 were liberated. The male (Stud No. 235) was recovered in September 1914, near 

 Fair Isle, that is, after 1306 days, and had increased in length from 34 to 43*1 cm., 

 a total increase of 91 cm., or "07 cm., per 10 days, over the whole period. The 

 3 females were all of small size when liberated ; 1 (Stud No. 242) was recovered 

 in April 1914, after 1148 days, oif North Shields ; it measured 32-5 cm. when 

 liberated and 47*5 cm. when recaptured, an increase of 15 cm., or at the rate of 

 •13 cm. per 10 days. The second female (No. 855) was recaptured in August 

 1914, after 1220 days, at Aberdeen Bank ; it had increased from 32 to 44*2 cm., 

 a growth of 12*2 cm. in the period, or at the rate of '1 cm. per 10 days. The third 

 female (No. 543) had increased from 30*5 to 43*5 cm., or 13 cm. in the period, 

 which is at the rate of "1 cm. per 10 days. 



A male and 2 females were recaptured after 4 years of freedom. The male 

 (Stud No 692) was taken in January 1916, after 1004 days, 21 miles off Flamborough 

 Head ; it had grown from 22'5 to 37*7 cm., a total increase of 15'2 em., or at the 

 mean rate of "09 cm. per 10 days. One of the females (A. 1617) was taken in De- 

 cember 1914 after 1476 days, near Aberdeen Bank ; it had increased from 42*5 

 to 55"3 cm., a total of 12'8 cm., or at the rate of "08 cm. per 10 days ; this was a 

 large fish when it was Uberated. The other female (Stud No. 696) was got in April 

 1916, after 1682 days, E.S.E. of the Bell Kock ; it had grown from 28 to 44-2 cm , 

 a total increase of 16'2 cm., or at the rate of '09 cni. 



The marked fish wliich were recaptured after an interval of years in other ex- 

 periments were also tabulated. The number taken between 2 and 4 years after 

 liberation was 21, 11 males and 10 females. In the case of 1 male and of 1 female, 

 the measurements were not ascertained. Moreover^ the measurements of one of the 

 females were obviously wrong, since, in 1197 days, it had grown, according to the 

 record, only from 39 to 39*9. cm., an increase of less than one centimetre after three 

 summers' freedom. The true length of this fish was probably 49*9 cm. on re- 

 capture, showing a growth of 10'9 cm., but, as there is doubt about it, it is omitted. 

 The particulars of the other fish are given in the following table : — 



[Table. 



