The reason of this is simple. Walking up the Strand in search of a dinner, a reasonable man will keep to the trottoir, and look in at the windows close to him, instead of parading up the mid-street. And even so do all wise and ancient trout. The banks are their shops; and thither they go for their dinners, driving their poor little children tyrannously out into the mid-river to fare as hap may hap. Over these children the tyro wastes his time, flogging the stream across and across for weary hours, while the big papas and mammas are comfortably under the bank, close at his feet, grubbing about the sides for water crickets, and not refusing at times a leech or a young crayfish, but perfectly ready to take a fly if you offer one large and tempting enough. They do but act on experience. All the largest surface-food—beetles, bees, and palmers—comes off the shore; and all the caperers and alders, after emerging from their pupa-cases, swim to the shore in order to change into the perfect insect in the open air. The perfect insects haunt sunny sedges and tree-stems—whence the one is often called the sedge, the other the alder-fly—and from thence drop into the trouts’ mouths; and within six inches of the bank will the good angler work, all the more sedulously and even hopefully if he sees no fish rising. I have known good men say that they had rather _not_ see fish on the rise, if the day be good; that they can get surer sport, and are less troubled with small fish, by making them rise; and certain it is, that a day when the fish are rising all over the stream is generally one of disappointment. Another advantage of bank fishing is, that the fish sees the fly only for a moment. He has no long gaze at it, as it comes to him across the water. It either drops exactly over his nose, or sweeps down the stream straight upon him. He expects it to escape on shore the next moment, and chops at it fiercely and hastily, instead of following and examining. Add to this the fact that when he is under the bank there is far less chance of his seeing you; and duly considering these things, you will throw away no more time in drawing, at least in chalk-streams, flies over the watery wastes, to be snapped at now and then by herring-sized pinkeens. In rocky streams, where the quantity of bank food is far smaller, this rule will perhaps not hold good; though who knows not that his best fish are generally taken under some tree from which the little caterpillars, having determined on slow and deliberate suicide are letting themselves down gently by a silken thread into the mouth of the spotted monarch, who has but to sail about and about, and pick them up one by one as they touch the stream?—A sight which makes one think—as does a herd of swine crunching acorns, each one of which might have become a ‘builder oak’—how Nature is never more magnificent than in her waste.