NIPPERS.—The four teeth in the front of a horse's mouth (two above and two below) are so denominated: these are the teeth which expel their predecessors (called _colt's teeth_) when a colt is two years old off, and rising three. See COLT. NIPPERS.—The smaller sized PINCERS of the shoeing-smith are so called. NITRE—is an article in too much general use to stand in need of minute description. Its medical properties are of the most universal kind, with respect to the diseases of horses; but it is, on account of its being easily obtained, (for little money,) frequently introduced with the greatest indiscretion. NITRE is an useful assistant in most inflammatory disorders, as it is both of a diuretic and cooling property; it is consequently to be recommended in FEVERS, INFLAMMATION of the LUNGS, swelled legs, and other defects or diseases, where an additional discharge of urine, or an attenuation of the blood, is to be promoted. Its well-known good qualities have rendered it the more subject to an almost perpetual perversion of the excellent properties it so clearly contains; for, although it never should be given in _large_ quantities without some _proper_ corrector, yet the invincible propensity of COACHMEN and GROOMS to become VETERINARIANS, renders them completely _miserable_, unless they can be constantly displaying some specimen of their _art_; to which nothing can possibly become more happily appropriate, than the _profuse_ administration of NITRE; as it affords a frequent opportunity of preying upon the pecuniary sensations of the master, by means which it is unnecessary to introduce. NOSEBAND—is that part of a military bridle, headstall, martingal, or hunting rein-halter, which passing below the under jaw, and round the nose above the nostrils, assists in keeping the other parts of either in their proper position. NOSTRILS.—The nostrils of a horse are generally a tolerable criterion of his _wind_, as well as his _blood_. A horse having a wide and well-extended nostril, may be supposed to possess a free and easy expansion of the LUNGS: this cannot be more perfectly comprehended, than by adverting occasionally to the shape of horses who RACE, and are thorough BRED; where the form and expansion of the nostrils will be found more than one third the size of such horses as are of common lineage, and inferior description. O.