DENTITION begins at or soon after birth, and continues until the horse is five years old, and the animal suffers more or less during that time. The lower animals do not appear to suffer so much in getting their first teeth, but do suffer when getting their permanent ones, even more, perhaps, than the human being. Hence, we have dentition fever in the horse from three or four up to five years old—there is a weak pulse, impaired appetite, a staring coat, the bowels sometimes costive, and sometimes there is diarrhoea; he is not able to work, and it is hard to say what is the matter, unless the system is affected by the irritation set up by the teeth, for all of the organs appear to be in a healthy state. Such symptoms indicate that the temporary teeth are not being displaced in a proper way. The same applies to cattle. The food passes improperly digested, which may be due to the state of the teeth. It is well in such cases to examine the mouth, and if you find some tooth not properly displaced, the gums swollen, remove it—which you can sometimes do with the thumb and finger, or you may have to use the forceps, which we believe the best. Then give a laxative, feed on soft food, and the animal will soon recover. IRREGULAR TEETH.—The gums are sometimes irritated in connection with the molar teeth. This irritation extends and affects the pharynx and larynx, and perhaps a severe cough is the result, called a dentition cough. It is often the result of but a slight irritation at the back part of the gums—this cough may not be very severe, but it is troublesome—or the gum may become badly swollen. The best treatment is to scarify it. We find tumors in the upper and lower jaw, perhaps from the imperfect development of the teeth, or from slight injury, irritation, etc. They may or may not be malignant, and are likely to extend and involve the alveoli and bone. If not malignant, and only upon the surface, it is called epulis, and is not very common. If not malignant remove it, and it may do well for some time; it will return, extend and become a hopeless case. The horse frequently suffers from sharp, projecting teeth, which occurs more commonly in old horses, from wearing down the teeth in an uneven manner. They will be sharper on the inner edge of the lower jaw and the outer edge of the upper jaw, which may be from faulty formation. In such cases the animal has difficulty in eating, grinds his food, ejecting it. Perhaps when driving him he carries the head to one side from the bearing of the bit not being the same on both sides. If the teeth are sharp in the lower jaw they lacerate the tongue; if in the upper they lacerate the cheeks. The best remedy for this is the tooth rasp, and there is no necessity for using the mouth speculum. After rasping, feed upon soft food for a day or two. There are more difficult cases where the teeth project to some extent, generally in old horses, due to malformation of the jaw.