128 FLIES AND FLY FISHING. 



an imitation of a little black fly that may be seen on very 

 hot days on nearly all rivers in August, dancing up and 

 down very close to the surface, and always keeping close 

 to the banks. It is never seen in the centre of the stream. 

 It is a good fly for both trout and grayling. It should 

 only be used in quite clear water. It kills on all French 

 streams, and is the best fly you can use in August in the 

 streams near Homburg. 



Hooks, Nos. 11 and 12, and very occasionally No, 10. 



Body : Black ostrich herl tightly wrapped on and ribbed 

 distinctly with silver wire. When tied on No. 10 hook, 

 with silver tinsel. A fine black hackle wound on close 

 to the head. 



37. The August Dun. A first-rate fly for both trout 

 and grayling, and will kill from the last week in July to 

 the end of October. It much resembles the March brown, 

 but is smaller, and not so decidedly mottled. In medium 

 sized, and small rivers, this is one of the best flies that 

 comes out during the season, but I have always been sur- 

 prised to find that it does not kill well on large rivers. 

 On these last I have often killed well with the March 

 brown when the fish would not look at the imitation of 

 the August dun, although its original was thick on the 

 water. I am quite unable to give any reason for this, 



