175. Litairgirum: i.e. dross of silver; temperately cold and wet; this name may be applied to the dross of gold; it has the constraining and healing virtues; this name may be applied to the dross of tin, and it is this that is most used for medical purposes, because it cleans the bones of their exudations and their foulness, and it also cleans the scabby head that is caused by the choleric humour or the salted phlegmatic humour. If the powder of these drosses be put on the scabbiness, it will help with every scabby head. If the same powder with rose water be put on the penis, it will help with the swelling and redness. Item, if litharge be pounded finely and mixed with vinegar or with barley water, it will stop the flux of dysentery. If