74 BAIT AND FLY FISHING. 



the supposed fly be in its mouth ; it then 

 discovers its mistake, but cannot at once 

 rectify it, for it has to close its mouth and 

 take water in by the gills, in order to eject 

 the cheat. At this moment the stream, or 

 wind, or the movement of the rod draws in 

 the hook over the barb, which secures the 

 fish ; the angler's next step being the work- 

 ing it down the pool and landing it on the 

 first sloping bank. 



I will now turn the attention of the reader 

 to the principal amphibious flies which 

 frequent large quick running streams, gene- 

 rally resorted to by salmon. There is a 

 grey fly (No 1), that appears in March. I 

 will be very particular in my description of 

 this fly, because it has the same habits as 

 all flies, which, when resting, keep their 

 wings erect, and have two hairs or prongs 

 projecting from the extremity of the abdo- 

 men about five-eighths of an inch. These 

 prongs it has in both forms. In its water 

 form, these hairs give steadiness to all its 

 movements ; in this form it nearly resembles 

 the fly, only it is flatter and thinner, afford- 

 ing facility for creeping under stones, and 



