The Lips
of the dog discharge, with somewhat less efficiency, the same office as in the horse, cattle, and sheep; and are usefully employed in gathering together the food, and conveying it to the mouth. The lips also secrete the saliva, a fluid that is indispensably necessary for the proper comminution of the food.
Swellings on the inside of the cheek or upper lip, and extending nearly to the angle of the lip, are of frequent occurrence. A superficial sore spreads over it, slightly covered by a yellowish, mattery pellicle; and on the teeth, and extending down the gums, there is a deposition of hardened tartarous matter, which is scaled off with a greater or less degree of difficulty. It must be removed, or the sore will rapidly spread over the cheek. A lotion of equal parts of tincture of myrrh and water, with a few drops of the tincture of cantharides, will be usually sufficient to cause the swelling to subside, and the pellicle to be detached. The lip, however, will generally remain slightly thickened. A little soreness will sometimes return, but be easily reduced.
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