The Dishley sheep are excellent specimens of what may be done with the form of an animal, when the endeavours of the breeder are seconded by a pasture suitable for the intended breed. They are admirably adapted, as every breed ought to be, to the soil and situation where they were called into existence; and their crosses are now spread over most part of the country; principally the corn districts, as they are supposed to be the most profitable kind on farms where the best tillage crops are combined with the fattening of livestock, though Marshall supposes they will only be reckoned profitable so long as other breeds of long-woolled sheep remain with thin chines, and loose mutton; or, in other words, that there are plenty of kinds which would prove equal, if not superior, to the present, if they only received the same studied attention. (79.) _Varied nature of the food of Sheep._--Sheep will take, sometimes from choice, sometimes from necessity, to food of a directly opposite nature to what they have been used. "The mutton," says the Rev. George Low, writing of Orkney, "is here in general but ordinary, owing to the sheep feeding much on sea-ware, to procure which these creatures show a wonderful sagacity, for no sooner has the tide of ebb begun to run, but they, though at a great distance, immediately betake themselves full speed, one and all, to the shore, where they continue till it begins to flow." The sheep of Iceland are content during severe winters to feed, and be preserved, on messes of chopped fish-bones, being all that the ingenuity of their masters can provide in the way of a precarious sustenance. During the long continuance of snow-storms, when the herbage is beyond the reach of their utmost efforts, sheep are known to devour the wool on each other's backs, and, in some instances to acquire a relish for this unnatural food, which adheres to them through life. This, though on first thoughts hardly credible, is scarcely more wonderful than the partiality which cows display, when instigated by the depraved appetites created by pregnancy, for blankets, and any similar domestic articles which may be exposed to the gratification of their longings.