148 APPENDIX 
1829. In February, Fraser (“‘ On the Salmon”) reports marking a 
number of grilse kelts, estimated as of 5 to 6 lb. 
Marking was done by cutting off the adipose fin. 
In nine months he reports the capture of one as a 
salmon of 13 lb., 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 lb. 
In six months one was recaptured as a salmon of 
14 1b., 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 lb. 
Of the 524 marked in 1834, 68 were reported recap- 
tured in 1835, averaging 24 lb. 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 14 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. 
