These are compound medicines. _A plaster for chironia._ Of ceruse, oz. viij; of fissile alum, oz. ij; of the flakes of copper, dr. ij; of sal ammoniac, of frankincense, of scraped verdigris, of pomegranate rind, of each, oz. ij; of quicklime, oz. j; of wax, lb. j; of myrtle-oil, lb. j. ss; triturate the dry things with wine. At first it removes callus; and it is laid by and kept, and at last when used, being softened with myrtle-oil, it cicatrizes.—_Another_: Of litharge, lb. j; of oil, lb. ij; of black chamæleon, of the roots of birthwort, of immature galls, of each, oz. j; of galbanum, of ammoniac perfume, of frankincense, of each, oz. ij; prepare, stirring with the roots of green reeds. _From Archigenes, for chironia, and malignant ulcers in the legs and breast, for struma, and parotis._ Of the fat of an ox lb. iij; of turpentine, oz. v; of manna, oz. vij: of the earth called sarda which painters use, oz. v: having put the soluble and dry articles together and melted, use.—_Another_, of Archigenes: Of wax, oz. iv; of oil of unripe olives, of manna of frankincense, of diphryges, of the flakes of copper, of each, dr. iv; having triturated the powder with vinegar, and made of the thickness of honey, mix with the cerate, and use upon a pledget.—_Another_, for the malignant ulcers of women, and of other persons having a soft skin: Of Tuscan wax, dr. viij; of bulls’ fat, of turpentine, of burnt lead, and of pepper, of each, dr. j; use on a pledget with rose-oil or myrtle-oil. * * * * * COMMENTARY. Celsus describes the chironian ulcer as being large, and having hard, callous, and swelled edges, with a copious discharge of thin sanies. It is attended with no inflammation, the pain is moderate, it does not spread, and therefore it is not dangerous, although not readily cured. Sometimes, he says, it becomes covered with a thin cicatrix, and then again the ulcer breaks out. It occurs mostly in the feet and legs. From this description it is evident that by the chironian ulcer Celsus meant merely an ill-conditioned ulcer, and that he distinguished between it and the _cacoethes_, or malignant ulcer, which last he held to be nearly allied to the carcinoma. However, most of the Greek authors apply the term malignant to the chironian ulcer. For the cure of it Celsus recommends an application consisting of squama æris, lead burnt and washed, calamine, wax, and a small quantity of roses.