B. W. O. 167 



Wings. — Darkest starling or medium coot. 



Body. — Greenish-olive seal's fur. 



Tag. — Flat gold. 



Whisks. — Pale dun cock. 



Hackle. — Medium olive. 



Hook. — No. 1. 



Another pattern which occasionally kills well is dressed 

 in the same way except that the body is of heron herl dyed 

 a greenish-yellow olive, and there is a rib of fine gold and 

 no tag. 



But at times the trout will concentrate on the spinner. 

 It may be, and generally is, the male spinner — of a dark, 

 rich brown sherry colour. On such occasions I have found 

 a fly dressed as follows deadly : 



Hook. — No. 1, round bend or equivalent in Limerick 



shape. 

 Body. — Dark sherry-brown seal's fur. 

 Rib. — Fine gold wire. 

 Whisk. — Honey-dun cock. 

 Hackle. — Six or seven turns of dark, rusty dun cock. 



As an illustration of the importance of a correct diagnosis, 

 let me quote a recent experience on the Itchen. 



On June 21, 1919, the small fly evening rise was 

 over, and I judged from the large and violent kidney- 

 shaped whorls made by the rising trout that they had 

 come on to the blue- winged olive. I offered a big fish 

 under my own bank an Orange Quill with some confidence. 

 He took no notice at first, but presently stopped, and I 

 moved on to another fish. He was taking just above a 

 large clump of a big umbelliferous plant, and I had to 

 throw over it and recover my fly through it or not at all. 

 So I calculated I had just one chuck, and if that did not 

 come off I might as well move on, for I should not have 

 another chance. I watched the fish for a minute or two, 



