30 TROUT FISHING 



The same consideration applies to every 

 fly in the richest stock. Each has its day 

 or days, its hour or hours ; and to these 

 times alone is it opportune. There are 

 dozens of the flies, a few of them made in 

 imitation of insects found on certain 

 waters only, most of them for use any- 

 where in Great Britain and Ireland. 

 Think, then, of what a range of know- 

 ledge is implied in the fitting choice of 

 lures to be mounted on the cast. Some- 

 times, by bringing out the ephemeral 

 creatures in their due season. Nature 

 helps : you see on the water, or flying 

 about just above it, the insects which the 

 lures on the cast should resemble. Some- 

 times Nature withholds this help : an 

 untimely frost, or even a less severe lack 

 of warmth, delays the hatching. 



Often, also, Nature plays a prank 

 which is injurious to the modern doctrine 

 that floating flies, to be cast over rising 

 trout, are the only proper lures. Even 

 on the warmest day of summer, a chill air 

 is often not far away. It is wandering 



