The passage of the ear is reddened and causes the dog to rub his sore ear, or even cry from the pain. Very frequently this condition is accompanied by a fetid discharge ; if so, it is spoken of as internal canker of ear. A little cooling lotion, such as a couple of teaspoonfuls of Goulard, in eight ounces of water, applied night and morning, will usually suffice to cure this complaint. At same time give a dose of purgative medicine.