Regarding the Beaverkill, the name of which is so suggestively American to one at all familiar with the trout streams of the East, it might be well to amplify to some extent, as I am sure many anglers would otherwise take exception to the statement that this fly is of English origin. In "Familiar Flies," by Mary Orvis Marbury—an invaluable book for the fly-fisherman—it is related that an American angler, fishing one day with a cast of three English flies, had particularly good luck with a certain one of the three, and subsequently had the pattern copied by the famous old-time fly-tier, Harry Pritchard. At that time the fly was christened the Beaverkill, it being evident, from the facts as stated, that the English name of the pattern was unknown to the parties.
From the story as told in "Familiar Flies" it may be gathered that even the persons who introduced the "Beaverkill" to American waters in time lost sight of the fact that the fly was originally dressed after an imported model. Personally, I am sure that the Beaverkill is none other than the "silver sedge," a well-known English pattern used frequently in both wet and dry fly fishing, and I am certain that anyone who will take the trouble to compare the two flies side by side will quite agree with me.
As to the basic principle of trout fly-fishing, that of approximating with the utmost fidelity, in the dressing and manipulation of the artificial fly, the shade, shape, and movement of the natural fly, various "schools" have arisen from time to time in advocacy of the greater importance of coloration as compared to size and shape (within reasonable limits, of course), or, again, of the action imparted to the artificial fly as compared with its coloration, size, or form. Into matters of this sort it is needless to enter here. The practical, common-sense point of view would seem to be that neither the proper color nor the correct imitative action of the artificial fly can safely be disregarded by the angler; moreover, the size and the shape of the artificial, varied to suit the occasion, are factors of great importance. By the skilful employment of the modern tackle and methods of the dry fly caster the angler approaches very closely to the ideal principle of his craft—exact imitation of nature.
Recalling a foregoing statement to the effect that the American fly-caster, in general, has not to any serious extent followed the theory of exact imitation of nature; moreover, in view of the fact that practically no artificial flies are to be had dressed in imitation of the native insects common to our trout waters, it should be obvious that the dry fly caster must continue to rely upon artificials of English pattern or manufacture. It is a fact, however, that it is possible, provided your fly book is passably well filled with various patterns, to approximate very closely the appearance of many of the natural insects you will see upon the water.
Furthermore, in view of this state of affairs, it would seem best to avoid at this time any lengthy reference to the entomology of the trout stream, as leading only to confusion worse confounded—there is an instant and imperative need of an authoritative American fly-fishing entomology and of a fairly comprehensive series of artificial flies, dry and wet, dressed in imitation of the native insects common to our streams and upon which our trout are known to feed; until these are available we must adapt the means at hand to the end desired. In this connection, however, it should be noted that it is not strictly necessary for success that the angler at all times use an exact copy of a natural fly—witness the wide employment of various fancy patterns both here and abroad, and the further fact that our native trout are still fortunately rather less discriminating in the matter of rising to the artificial fly than the brown trout of England.
The selection of the proper tackle for dry fly fishing is obviously dependent upon a thorough knowledge of the manner in which it is to be used. Possibly it is unnecessary to say that the dry fly caster invariably works upstream, casting, preferably, upstream and slightly across the current, and that between casts it is generally necessary to dry the fly by several false casts, that is, without allowing the fly to touch the water. To the fly-fisherman of any experience it should be very plain that a first-class fly-rod and a skilled wrist are somewhat essential. Moreover, the dry fly man works largely, although not exclusively, on the still pools and quiet reaches, where only the best of tackle, handled with a more than moderate degree of skill and care, can produce consistent results.
Furthermore, no little skill must be exercised by the angler in order properly to manipulate, or fish, the single "floater" when the cast has been made and the fly is upon the water, it must be allowed to float naturally downstream in the manner of the natural fly under like circumstances. All of which sounds perhaps not so very difficult, but, in practice, the operation really has complications of which the tyro little dreams. It is true that a dry fly possesses a certain degree of buoyancy, but if bunglingly cast and subsequently awkwardly manipulated, the fly is soon "drowned," drawn under water by the weight of a carelessly slack line or from some other cause really, as a rule, preventable by the careful and skilled rod-handler.
Indeed, the difficulties of clean-cut dry fly-casting are such that even an expert caster can do little with a poor equipment; the beginner, therefore, should be extremely careful in the selection of his tackle. The disappointments and difficulties of the game are quite numerous enough without starting in with the very serious handicap of a poorly adapted outfit.