82. Cerusa: i.e. ceruse; cold and dry in the second degree; it has the virtue of cleaning the skin; according to Platearius, this is how ceruse is made: place sheets of lead at the mouth of an earthen vessel containing strong vinegar, and the scum that comes on the vinegar is called ceruse; people who are used to obtaining ceruse often develop paralysis,apoplexy, epilepsy, and arthritis, coming from coldness, because lead and vinegar overcome the spirits and the nerves, and they weaken the animal virtue; ceruse serves well to develop healthy tissue in wounds, and to eliminate proud flesh.