contact with clean flesh can fail to unite, especially when medicines proper for that purpose are made use of; since often an ulceration of the fingers, unless great care is taken to prevent it, will join them together in the healing. [Sidenote: _Of the cerion ulcer._] There is also a kind of ulcer, which from its resemblance to a honeycomb, by the Greeks is called cerium[FE]. And of this there are two species: the one is of a whitish colour, and like to a furuncle, but larger, and attended with great pain. When it maturates, it has openings, through which is discharged a glutinous and purulent matter; nevertheless it does not come to a due ripeness. If it be divided by incision, there appears to be a great deal more corruption within, than in a furuncle, and it reaches deeper. It seldom occurs but amongst the hair of the head. [FE] κηρίον. The other is less, and eminent upon the top of the head, hard, broad, of a pale green colour, and more ulcerated; for there are openings at the roots of each of the hairs, through which issues a glutinous, palish humour, in consistence like honey, or viscum, or sometimes oil; and if an incision be made upon it, the flesh within appears green. There is a great pain and inflammation, insomuch that they often bring on an acute fever. To that kind, which has fewer openings, it is proper to apply dry figs, and lintseed boiled in mulse, and drawing plaisters and malagmas, or the medicines, of that quality above recited. Upon the other, the same medicines, likewise meal boiled in mulse, and half the quantity of turpentine resin added to it; and a fig boiled in mulse; to which a little powdered hyssop is added; likewise a fourth part of stavesacre added to the fig. But if medicines do but little service in either kind, the whole ulcer must be cut out to the sound flesh. When the ulcer is taken away, medicines must be applied over the wound; first such as promote pus, next detergents, then such as incarn. [Sidenote: _Of the acrochordon, acrothymium, myrmecia, and the clavus._] There are also some resembling warts, which have different names, as they are different disorders. The Greeks call that an acrochordon[FF], where a substance pretty hard is collected within the skin, which sometimes is rough, and of the same colour with the adjacent parts; near the skin it is narrow, and broader above. This is small, rarely exceeding the size of a bean. They are hardly found to grow single; generally a number together, and chiefly in children. They sometimes suddenly disappear, sometimes they excite a moderate inflammation. Some are also converted into pus. [FF] ἀκροχορδὼν.