we must use cold water or oxycrate, and if the bleeding continue we may sprinkle upon the part finely powdered chalcitis, which we may also have recourse to often when the part is gangrenous and flaccid. In winter, and when the parts are nervous, we may soak oblong pledgets in wine and oil and apply them; and in summer, when the parts are fleshy, we may soak these applications in water and oil, or in the same cold wine and oil, and binding them, on the following day we may bathe with the same fluids; but on the third day, having loosed the dressings and sponged the parts, we may use the application called tetrapharmacon on a pledget, and if there be no inflammation present we may apply the same wash for the preservation of the pledget; but if there be inflammation, we must apply a digestive cataplasm, having first poured water on the parts. When the inflammation abates we may effect the cure by promoting suppuration and incarnation. Sinuses are to be cured by agglutinative remedies, as has been said, in the Fourth Book, on sinuses. * * * * * COMMENTARY. All the authors quoted under this head in the Fourth Book may be consulted. Celsus is more than usually prolix in laying down the rules for the surgical treatment of abcesses. Before the abscess harden, he directs us to make incisions in the skin, and apply a cupping instrument, in order to remove any symptoms of inflammation which may have been present, or, in other words, to procure resolution. Sometimes, however, as he explains, the matter is collected in a cyst (tunica), in which case it is not to be supposed that the contents of the abscess can be removed by a cupping instrument. When the pus ripens it is seldom proper to let it out if seated in the armpits, or groins; nor when the collection is superficial, or in the flesh; and it is better, as he prudently directs, to apply cataplasms until the pus make an opening for itself. When it is judged necessary to open an abscess, he recommends us, if not seated in a nervous part, to perform the operation with a red-hot iron, because a small opening made in this manner will remain longer open. Abscesses in nervous parts are to be opened with a scalpel. In making an incision, the form and size of it are to be considered. In general the openings are to be made as small as possible; but large sinuses require larger incisions, and sometimes two or three are necessary: when the skin is livid or diseased it sometimes must be cut off to further the cure. In this case an opening is to be made of the shape of a myrtle-leaf. When the pus is evacuated, if in the armpit or groins, no pledget is to be used, but a sponge out of wine is to be applied. In other places, a little honey is first to be used; then agglutinative medicines; and above these likewise, if necessary, a sponge squeezed out of wine. (vii, 2.)