the fish is usually known as white trout) where the fishing is superb when the trout have run up into them.  Fly-fishing for sea-trout is not a thing apart.  A three-pounder that will impale itself on a big salmon-fly, might equally well have taken a tiny trout-fly.  Many anglers, when fishing a sea-trout river where they run large, 5 lb or more, and where there is also a chance of a salmon, effect a compromise by using a light 13 ft. or 14 ft. double-handed rod, and tackle not so slender as to make hooking a salmon a certain disaster.  But undoubtedly to get the full pleasure out of sea-trout-fishing a single-handed rod of 10 ft. to 12 ft. with reasonably fine gut and small flies should be used, and the way of using it is much the same as in wet-fly fishing for brown trout, which will be treated later.  When the double-handed rod and small salmon-flies are used, the fishing is practically the same as salmon-fishing except that it is on a somewhat smaller scale.  Flies for sea-trout are numberless and local patterns abound, as may be expected with a fish which has so catholic a taste.  But, as with salmon-fishers so with sea-trout-fishers, experience forms belief and success governs selection.  Among the small salmon-flies and loch-flies which will fill his book, the angler will do well to have a store of very small trout-flies at hand, while experience has shown that even the dry fly will kill sea-trout on occasion, a thing that is worth remembering where rivers are low and fish shy.  July, August and September are in general the best months for sea-trout, and as they are dry months the angler often has to put up with indifferent sport.  The fish will, however, rise in tidal water and in a few localities even in the sea itself, or in salt-water lochs into which streams run.  Sea-trout have an irritating knack of “coming short,” that is to say, they will pluck at the fly without really taking it.  There are occasions, on the other hand, in loch-fishing where plenty of time must be given to the fish without tightening on it, especially if it happens to be a big one.  Like salmon, sea-trout are to be caught with spinning-baits and also with the worm.  The main controversy that is concerned with sea-trout is whether or no the fish captured in early spring are clean fish or well-mended kelts.  On the whole, as sea-trout seldom run before May, the majority of opinion inclines to their being kelts.

Non-migratory Salmonidae.—­Of the non-migratory members of the Salmonidae the most important in Great Britain is the brown trout (Salmo fario).  Its American cousin the rainbow trout (S. irideus) is now fairly well established in the country too, while other transatlantic species both of trout and char (which are some of them partially migratory, that is to say, migratory when occasion offers), such as the steelhead (S. rivularis), fontinalis (S. fonlinalis) and the cut-throat trout (S. clarkii), are at least not unknown.  All these fish, together with their allied forms in America, can be captured with the fly, and, speaking broadly, the wet-fly method will do well for them all.  Therefore it is only necessary to deal with the methods applicable to one species, the brown trout.