94 TROUT-FISHING FOR THE BEGINNER 



on the south side. As spring advances, how- 

 ever, the temperature of the deep water 

 becomes more equable than that of the 

 shallows, which lose most of their heat at 

 night ; the fish therefore resort to the deeps, 

 until such time as the nights become warm 

 as well as the days, and the temperature of 

 the shallows likewise becomes equable. It 

 is the shallows that the trout prefer, so long 

 as the temperature is suitable. 



6. Trolling (or harling). 

 Really heavy trout in lakes seldom rise to 

 the fly at all, as they prefer more substantial 

 food in the shape of their smaller and weaker 

 brethren and bottom-feed in general. To 

 kill them, therefore, the angler must resort 

 to the use of the minnow, natural or artificial, 

 trolled behind a boat. A trolling rod should 

 be short and fairly stout, and the reel should 

 be capable of holding 100 yards of line. If 

 a gut trace is used, it should not be thicker 

 than necessary, say a couple of grades stouter 

 than the thinnest undrawn. Fine, twisted 

 wire traces can now be had nearly as supple 

 as gut, and of great strength. The natural 

 minnow affixed to a tackle is the most killing 

 bait on most lakes, though big trout often 

 take phantom minnows and other patterns of 



