109. Dragantum: i.e. copperas; hot and dry in the fourth degree; there are four sorts of it, i.e. the white sort, named Arabicum, as it is obtained in Arabia; the yellow sort named Ciprinum, which is obtained in the island called Cyprus; the third sort named Frasina, which is obtained in France and which is green in colour; the fourth sort is named Indicum, which is grey in colour and is obtained in India; these sorts are metals of the earth, and the best colour for it to be is clear and green; it retains its efficacy for ten years. It has the dissolving, consuming, and drying virtues, for which reason, according to Platearius, it is suitable against ulcers, and to dry up other suppurations. Item, take powder of copperas, and twice as much meal of beans which have been parched, and a fourth part consisting of soap, make a surgical tent with it and insert it in the opening of the wound; this will expand the wound, draw broken bones from it, and renew the tissue. It serves well against the disease named polypus, that is one of the diseases of the nose, and it is called polypus because poly means a lump and pus means a discharge i.e. a lump in the nose which is discharging. Item, take Apostolicon, the proper ointment for wounds, and put copperas through it, agitate them well together, and, if they are put in the nostrils they will help with the disease we referred to. Item, if a surgical tent of cotton be dipped in salted water and powder of copperas be put in it, and it be put in the nose, it will help with polypus. Platearius says to insert the same medicine in the vagina and it will help with the flux of