THE BUTTERFLY NET. 38 



water as possible. (See " The Vision of Trout," page 

 seventy-nine.) This position of the trout facing up stream 

 is also an important advantage to the angler when fishing 

 " dry fly," as his hook will most often be pulled back into 

 the mouth of the trout, instead of being pulled out and from 

 the mouth of the trout, as in the case of down stream 

 fishing. 



As we are now approaching the stream, we will look 

 at the water and see if anything is moving. By standing 

 here and looking up stream we shall not scare the fish, and 

 in order to see if the trout are feeding we must look out for 

 any unusual movement on the surface of the water, such as 

 the ring or dimple made by a rising fish. No, there is 

 nothing moving yet ; it is perhaps a little too early or not 

 quite warm enough to tempt the pupae * to come to the 

 surface in order to enter their aerial life, and therefore 

 until they begin to move upward to the surface the trout 

 are not likely to rise. In my creel is a self-contained 

 butterfly net ; it is ready for use in a few seconds, 

 and by its aid I catch that gnat-like fly floating on 

 the water. It is the sub-imago or dun called the 

 Blue Quill, the very fly the trout were taking yesterday. 

 Look ! There is another one on the water floating down, 

 probably one of a previous so-called hatch of the same 



* For convenience it will be better to allude generally to the subaqueous life of 

 the water insect as the larval and pupal stages of their existence, the pupal being 

 understood to be the latter stages of their larval existence before becoming a flying 

 insect. (See The Ephemeridae, etc., page sixty-three.) 



O.K. D 



