21O 



Brown Trout 



feet in depth can usually sustain about two hundred trout to the acre, 

 while one of the same depth at an altitude of 1000 feet will only 

 produce food for half that amount. The owners of lochs usually pay 

 far too little attention to this when stocking them, and in their manage- 

 ment afterwards. 



Large sums of money have been spent introducing Loch Leven 



FIG. 212. 13 Ibs., Loch Kannocli. 251!! June 1906. 



trout into lochs which contain small trout that are scarcely worth 

 catching, in the belief that the size of the trout will be improved in 

 this way. Instead, however, of increasing the size, those who do this 

 are selecting the best possible means of defeating their object. The 

 small size is caused by there being too many trout for the quantity 

 of food in the loch. Reduce the number of trout and the size will 

 very soon increase. This can be done by netting and curtailing the 

 spawning-ground, or by fishing it well. It seems rather strange that 

 those who have the care of lochs give them so little attention. One 



