an external topical medicine, prepared of ingredients of different virtues, according to the intention of the physician. Hence there are different sorts of cataplasm with respect to the matter of which they consist, as emollient, resolvent, discutient, suppurative, corroborative, anodyne, and antiseptic cataplasm. They are commonly applied hot, or lukewarm, rolled up in linen cloths, which by means of the oils which are added preserve heat for a considerable time; for which end also some, upon these, apply a swine's or ox's bladder, and sometimes on the top of all apply an earthen tile.