66 FLIES AND FLY FISHING. 



ful, trout are to a certain extent diminished, but account 

 for it solely on the principle that a river will only supply 

 a certain number of fish with food. 



I do not believe, beyond taking their share of that food, 

 that the grayling do the slightest harm to the trout or 

 their spawn. If I was the owner of a first-rate trout 

 stream, I should never wish to introduce grayling into it ; 

 but in ordinary streams I should very much prefer having 

 both fish. 



