THE FLY FISHER'S GUIDE. 99 



Attention must be given to the division of the 

 wings, which should stand as shown in the plate. 

 No. 8. The Blue Dun is in appearance one of 

 the most delicate insects which frequent the 

 water. It is therefore extraordinary that it is to 

 be found in the greatest quantities on cold windy 

 days, being hardly ever to be seen in mild warm 

 weather. It is an early fly, making its appear- 

 ance about the first week in March, at which time 

 it remains on the water during the whole of the 

 morning. It is extremely difficult to meet with 

 a feather of the exact shade, or sufficiently deli- 

 cate in the fibre for the wings of this fly : it is 

 therefore better to make it of a pale blue dun 

 hackle, and use it as a dropper. The body is 

 composed of the blue fur from a water rat, mixed 

 with a small proportion of lemon-coloured mo- 

 hair. As the wings of this fly stand erect on the 

 body, a cock's hackle is preferable to that of a 

 hen, not being so liable to yield to the action of 

 the water. 



