Hook size: 12-18

Wing: This wing can be varied somewhat but my preference (John Atherton) is for Bali duck side feathers. I also use bronze mallard and dark mandarin.

Tail: Dark rusty dun hackle barbules.

Body: A mixture of dark muskrat or mole and some red-brown fur such as dyed seal's fur, to get a body of a brownish gray color, rather dark. Ribbed with narrow oval gold tinsel.
Hackle: A natural rusty dun, or one fairly dark natural dun and one red brown hackle mixed together.

Dry fly number six from John Atherton as found in the classic book entitled, "The Fly and the Fish" pub. 1951. Atherton did extensive research on "light patterns" of dry flies. This can be seen in his dry fly dressings, which call for many combinations of materials and favor the use of Cree Hackle.