148 APPENDIX 



1829. In February, Fraser (" On the Salmon ") reports marking a 



number of grilse kelts, estimated as of 5 to 6 Ib. 

 Marking was done by cutting off the adipose fin. 



In nine months he reports the capture of one as a 

 salmon of 13 Ib., showing an addition of 8 Ib. in weight. 



This return must be received with caution. 



1830. In February, Mr. Fraser (ibid.*) reports the marking of 



grilse by fastening wire round the tail. Grilse pre- 

 sumably 5 to 6 Ib. 



In six months one was recaptured as a salmon of 

 14 Ib., two witnesses being cited who saw the fish and 

 wire. 



1834. Shaw at Drumlanrig marked 524 sea trout in the herling 



stage. Marking was done by fin cutting. One fish is 

 reported to have been recaptured in the three successive 

 years in a cruive in the Nith. The markings were : 



1834, adipose fin removed. 



1835, third of dorsal fin removed. 



1836, half of anal fin removed. 



1837, fish was killed, 



being afterwards exhibited at the Royal Society of Edin- 

 burgh, vide Trans. R.S.E., vol. xv. part iii. p. 369 ; 

 weight 6 Ib. 



Of the 524 marked in 1834, 68 were reported recap- 

 tured in 1835, averaging 2| Ib. in weight. 



1835. The 68 recaptured sea trout above referred to were re- 



marked by fin cutting. 



One in 20 are reported as recaptured in 1836, averaging 

 4 Ib. in weight. 



Also 120 sea trout were marked by Shaw in this year, 

 60 being marked with copper wire on the dorsal fin, 

 and 60 with copper wire round the right maxillary bone. 



Of the latter group five recaptures were made in the 

 summer of 1836, the average increase of weight being 

 stated as 1^ Ib. 



1841. Young of Invershin marked grilse and recaptured salmon 

 and as under (Trans. Royal Society, Edinburgh, read 



1842. January 9, 1843). The manner of marking is un- 

 fortunately not specified, 



