The molars sometimes wear unevenly, their edges becoming as sharp as knives, and their tables slanting in an unnatural degree. The slanting tables cannot perfectly comminute the food, so that which is swallowed, not being properly prepared, affords little sustenance; while the sharp edges cutting the inside of the mouth, and causing it to ulcerate, render the animal, from the pain, disinclined to eat. The contraction of the bones of the lower jaw, in some old horses, by disabling them from bringing the tables of the molars in perfect apposition, is the cause of these teeth assuming such a shape; for in young animals this species of distortion is never witnessed, save as the consequence of disease. The horse not feeding, attracts the attention of the groom, and rarely does his intelligence detect the cause. Any member of the Royal College of Veterinary Surgeons, however, will soon discover the seat of mischief; by reducing the cutting edges of the molars, and invigorating the constitution, while the ulcerated mouth is properly treated, and the food carefully attended to, he will soon restore the horse once more to health and activity. The proprietor, however, must ever after have the horse, from time to time, attended to, as the symptoms denote a relapse; and with such precaution the animal may continue in full work for a number of years. Not a few horses show the edges of the incisor teeth perfectly rounded, so that when the mouth is closed the tables no longer touch in every part; indeed the form of the tables is destroyed, and the age of the animal can by them hardly be conjectured. These rounded teeth have been supposed to denote crib-biting, and gentlemen have for fifty years been told, to set down every horse presenting such a mouth, as a confirmed cribber. The notion, however, is not supported by fact, for cribbers generally exhibit even mouths; and I have not yet been able to discover an instance in which this habit had caused the tabulated surfaces of the teeth to be convex. The round form of the tables results from the horse biting when being groomed, and generally is seen in those which are of an excitable nature. These animals are usually good servants, but this shape of teeth unfits them for being turned out to grass, as the cutting edges of the nippers are destroyed.