;>8 



Appendices to Twenty -fifth Annual Report 



Although the above specimens have more numerous lines and are 

 larger in size than those in Table 3, I am inclined to put them also 

 down as Ik years old in summer and two years old in spring, and to 

 consider that they have been hatched very early in the year in a part 

 of the river where food was abundant, with the result that they were 

 strong enough to feed vigorously both in the summer and winter of 

 their first year, and again in the summer of their second season. The 

 first impression was that these were a year older, but on looking at the 

 scales of yearlings from hatcheries one finds traces of the first two 

 divisions at this early stage. 



No experimental netting for parr has yet been done in the upper 

 waters of the Tay or in its tributaries, so we are unable to say if the 

 small fish in each stream display any difference. Those mentioned as 

 taken up the river (at Grand tully) were caught by rod and showed no 

 appearance of silvery scales either in July or in April, but their general 

 features were similar to those of the tidal smolts in the Table. I am 

 not at present prepared to say more.about this class, except to point out 

 that the scales of some mature salmon have the same divisions of the 

 corresponding lines of infancy round the centre of growth. 



(6) Stormontfield Parr and Smolts— 2 years old {artificially reared). 



Date. 



Length. 



Sex. 



Weight, oz. 



Number uf Lines on Scale. 



Remarks. 



Cm. 



Inches. 



Total. 



1st 

 Year. 



2nd 

 Year. 



3rd 

 Year. 



1906 





















Mar. 13 



7-6 



3 



F. ? 



& 



19 



8 



11 





Parr. 



>t i.i 



11- 



4| 



F. 





25 



10 



15 





>> 



Jl M 



11-9 



4| 



F. 



h 



26 



10 



16 





)> 



>) J) 



14-1 



n 



F. 



u 



30 



12 



16 



2 



Smolt. 



J» >> 



14-2 





M. 



i 



34 



15 



16 



3 



Nearly smolt. 





16-1 





M. 





35 



14 



18 



3 



)5 



These were hatched at Dupplin, and were transferred to Stormont- 

 field ponds in the end of April 1904 when about two months old and 

 |-inch in length. When they had a little more than completed their 

 second year, on 13th March 1906, the water was run off the ponds 

 under Superintendent Lumsden's supervision, and the juvenile fish 

 were allowed to find their way through the exit pipe into the Tay. At 

 first none of them took advantage of the free passage, but as the water 

 subsided they made for the river in large numbers, and it was easy to 

 secure as many as were w T anted with a small landing net. A represent- 

 ative selection was kept in pails until measured, and the dimensions 

 are given. 



Length (cm.) - 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 

 Number (81 in all) 2. 7. 13. 10. 12. 17. 11. 4. 2. 1. 1. 1. 



The smallest was 6'8 cm. (2 j inches) and the largest 18 cm. (7g inches) 

 The majority were between 9 cm. (3 J inches) and 13 cm. (5^ inches) 

 and the numbers show the usual variation in the sizes of fish of the 



