If the cause be hot, let oil of roses be rubbed on it; if cold, rub on oil of camomile.500 If the place be red, take tepid juice of plantain and dip a linen cloth501 therein, and apply. Open the medial vein of the joint internal to it.502 Apply the blood of a hare, hot, to it, and cassia fistula thereon, which ripens it and every other hot or cold imposthume also.