64 NATURAL HISTOKY OF THE SALMON. 



Perth, contrived an instrument wMch punched 

 out a small part of the gill cover in the shape of 

 the Greek letter Delta, A; the mark was easily 

 put upon the fish, which appeared not to be in 

 the least injured by it. Mr Harvey again sent 

 300 silver rings of an improved construction 

 invented by George Anderson, Esq., Glasgow 

 which, to all appearance, gave hopes of their 

 being found in the. grilse on their return. The 

 young smoults on their leaving were marked as 

 follows : 



About 270 with silver rings inserted into the 



fleshy part of the tail. 

 About 1700 with a small hole perforated in 



the gill cover. 

 About 600 with the dead fin cut off in addition 



to the above perforation. 



Mr Buist published circulars offering a reward 

 of 1 over and above the market price for the 

 first grilse brought in; Ten Shillings each for the 

 next ten; and Five Shillings for the second ten 

 grilses. 



On the 3d of June a grilse was caught in 

 Lunan Bay, near Montrose, and sent to Mr Buist 

 for inspection. We examined this fish, and 



