MOON EYES.—Horses said to have MOON EYES, or to be MOON-BLIND, is one of the relics of former superstition, when certain defects of the eyes were ridiculously supposed to have been influenced for _better_ or _worse_, by the increasing or declining state of the MOON. Such opinions seem now to be wearing away, and verging upon oblivion, in proportion as the structure of the parts, as well as the remedies to relieve, become more perfectly comprehended by the indefatigable researches of VETERINARIAN investigation. MOOR GAME.—See GROUSE, HEATH FOWL, and GAME. MORTIFICATION.—This state, in a PHYSICAL sense, with either MAN or BEAST, is the total cessation of vital heat in any part of the body or extremities, which then becomes, insensible, and is followed by putrefaction. When a mortification arises from some external injury done to the part, it is not preceded by a gangrene, but is produced by an absolute stagnation of the blood and juices, and all the injured parts become insensible and putrid at the same time, without any previous inflammation. A mortification arising from some internal cause, or a deficiency of natural heat, comes on in the same manner, but is more tardy in its progress, although it exhibits similar appearances; but the nature of the disease may be readily discovered. When an external injury is the cause, if an incision is made early in the diseased part, it will be found insensible, and nothing but extravasated blood will be discharged. In all cases of MORTIFICATION, the disease, with its concomitant symptoms, proceeds with a rapidity that sets every medical interposition and exertion at defiance, till DEATH closes the scene. MOTION.—A horse is said to be of easy motion, when he has a fine length of forehand, goes off the ground lightly with his head up, gliding his hind-legs under his carcase in action, without the straddling spring for which rough-going horses are so remarkable. MOUTH.—The good or bad mouth of a horse depends upon the pliability of his temper, and his obedience to the bit. Some horses (particularly those of violent and refractory dispositions) are so truly insensible to every effort of even the best riders, that hardly any kind of bit can be invented to reduce them to subjection; while, on the contrary, there are those, and even blood horses, of such good temper, and constitutional docility; that they may be regulated instantaneously to any purpose, by the most tender bearing of a common snaffle.