In 1932 a Mr. James Ganly wrote to Dunne from Dublin in Ireland, asking for some modified flies. He had noticed that some may-flies much loved by trout were not matched by any of Dunne’s designs. Dunne had found the same problem himself on occasion and he passed the request on to Farlow’s. As he explained:
When Pale Mayfly “Spinners” (The Imago of Ephemera Danica) are falling thickly upon the water, a large proportion of them float for a little while with their wings upright, before collapsing into the moribund position with the wings flat on the water. As a rule, the trout take the fly in either of its attitudes indiscriminately; but I have known occasions when they settle down to feed exclusively upon the uprights, ignoring entirely the collapsed flies. To meet such emergencies, I have carried in my fly box for some years past a couple of specimens of No. 4 Mayfly which I have tied as uprights.
Further down he detailed his specification for the new flies;
The flies involved are Nos. 3 and 4. The dressings are precisely as already given, with the exception of the hackles K and H.1 respectively. These, instead of being cut and tied in as flat wings, are simply wound on – as many turns as the fly will hold – and treated in the same way as the hackles for Nos. 1 and 2. ... I shall give them in the next edition of “Sunshine and the Dry Fly” as Patterns G and H.
Of course the Dark Mayfly Spinners, Nos. 7 and 8, could be treated in the same way; hackles H.2 being wound on instead of cut into flat wings and tied in; and I shall include these in the list of new dressings as Patterns I and J; but there is not likely to be any demand for them now.
But the second edition of his book would not be finalised until after his death and for whatever reason his promise was not kept. Better late here than never.
Updated 10 Dec 2021