| In keeping with established structure of the blog, the fly above is tied on a size 14 hook. | 
| 
Hook: | 
16-20 | |
| 
Thread: | 
Purple Pearsall's Gossamer Silk | |
| 
Body: | 
Purple Pearsall's Gossamer Silk | |
| 
Hackle: | 
Snipe covert | |
| 
John Waller Hills suggests that the Dark Snipe and
  Purple is the most useful imitation for the Iron Blue in his History of Fly Fishing for Trout (1921).
  He prefers the Dark Snipe and Purple for its simplicity,
  particularly by comparison to contemporary imitations proposed by G.E.M.
  Skues, despite their usefulness. Sylvester Nemes included it in his first
  book, The Soft-Hackled Fly (1975),
  and in its second edition (2006) as both a soft hackle and a tiny soft
  hackle: 
“body: Purple silk floss 
hackle: Small covert hackle from snipe wing. These are the very
  short feathers on the leading edge of the wing.” 
T. E. Pritt lists this dressing almost verbatim
  as No. 10, the Dark Snipe, in North-Country
  Flies (1886), noting that the fly is a “splendid killer on cold days in
  the early part of the season, and is a favourite on the Ribble. In some
  districts it is not dressed until June, but the angler will find it too good
  to be neglected as a spring fly.” Leslie Magee includes Pritt’s dressing on
  the color plates of Fly Fishing: The
  North Country Tradition (1994) which illustrate the soft hackles he
  prefers. The manuscript “List of Artificial Flies used by Sylvester Lister Snr” from
  1898  that Magee reprints also includes
  a dressing for the Snipe and Purple or Dark Snipe, but it adds a magpie herl head and
  recommends slightly speckled snipe coverts.  While authors like Hills give Pritt credit for the Dark Snipe, Magee points to a manuscript precedent earlier than Pritt or Lister, which was likely unknown to Hills. William Brumfitt, the professional fly tyer who lived all of his life in Otley, Yorkshire and whose illustrations Pritt copied directly for the color plates in Yorkshire Trout Flies (1885), listed two dressings for the Dark Snipe. In addition to the purple-bodied dressing Pritt listed, Brumfitt also favored an orange-bodied dressing, the aptly named Dark Snipe and Orange. While Pritt cites Brumfitt's fly tying prowess in the introduction Yorkshire Trout Flies (1885), he only chose to include the purple-bodied dressing. 
Perhaps Pritt's choice acknowledges the historical persistence of a purple-bodied, dark-hackled dressings. A version of this configuration appears in Charles Cottons' 1676 additions to Izaak Walton's Compleat
  Angler. Cotton includes a dressing for an April pattern that he
  calls the Violet Flie. Its simplicity and coloration make it a likely,
  Restoration-era precursor for the Snipe and Purple: "From the sixth of
  this Month to the tenth, we have also a Flie 
  call'd the violet Flie, made of a dark violet stuff, with the wings of
  the grey feather of a Mallard." | 
 
