of the Fishery Board for Scotland. 57 



(4) Smelts — commencing their Third Year. 



Date. 



Length. 



Number of Lines on Scale. 



Where 



Remarks. 



Cm. 



Inches. 



Total. 



1st 

 Year. 



2nd 

 Year. 



3rd 

 Year. 



Captured. 







Mar. 1906 



11-6 







25 







8 



S. W. 

 10 4 



3 







April 1904 



11-5 



*i 



23 



8 



9 3 



3 







55 55 



12-7 



5 



27 



9 



10 3 



5 



1 





May 1903 



11-4 





25 



9 



8 4 



4 



V Tidal water. 





> » >> 



14- 



54 



23 



(3 



8 3 



6 







1904 



12-5 



5 



28 



9 



12 4 



g 







>> j> 



13-8 





24 



8 



10 3 



3 



1 



J 





„ 1903 



»> >> 



12- 7 



13- 9 



5 



5| 



26 

 27 



9 

 6 



11 3 



9 4 



3 

 8 



1 7 miles up 

 | river. 





>) j> 



11-5 



44 



21 



6 



10 3 



2 



35 miles up 

 river. 





Note. — Lines of the second year are divided into S. (summer) and W. (winter). 



Here we have the contracted lines of the second winter's growth 

 followed by the more open ones representing the early part of the third 

 summer. The membrane covering the scales is very thin, and the 

 smolt dress has been assumed. These young fish are now a little over 

 two years old, and are evidently on their way to the sea. 



There is, however, a different class of parr and smolts which I have 

 come across, and am rather puzzled by their scales. I have found them 

 as parr in summer and spring about Grandtully, on the upper Tay, and 

 as smolts in the estuary when migration was taking place. Their scale 

 ridges can be divided into three periods, with a doubtful demarcation 

 between the first and second posterior ones, and a well-defined separa- 

 tion between the second and third on the anterior area. I annex details 

 and give the number of lines in each division instead of for each year. 



(5) Parr and Smolts of Doubtful Age. 



Date. 



Length. 



Number of Lines 

 on Scale 





Where 





Estimated 



Remarks. 



Cm. 



Inches. 



Total. 



Divided. 





Captured 





Age. 



Julj- 1904 



11-4 



4J 



29 



7-12-10 















5 5 55 

 )5 >! 



,, 1905 



11- 6 



12- 7 

 11-6 



5 



i\ 



27 

 29 

 28 



8-11-8 

 7-13-9 

 7-12-9 





, 35 miles 

 up river. 





Under I| 

 years. 





■ Parr. 



5 5 55 



12-6 



5 



29 



9-11-9 















April 1903 



127 



5 



34 



8-14-12 



„ 







2 years. 







„ 1906 



12-3 



4§ 



35 



8-16-11 















>) 5 5 



May 1903 



5 ) ; 5 



16-3 

 157 

 15* 



64 

 64 



51 



37 

 35 

 31 



10-14-13 

 9-13-13 

 7-12-12 





Tidal 

 water. 





2 years. 





Smolts. 



