Those, that are for making quick dispatch, ought to tie the skin tight with the string, that it may be the sooner cut; and at night to introduce some small slips of a penecillum, that the skin may be made thin by the same means that it is distended; however this occasions pain. The dispatch, as well as the pain, is increased, if both the string and the penecillum be turned with some one of those medicines, which I mentioned, for consuming a callosity. It may happen, however, that the use of the knife may be necessary, even in this part, if the fistula points inward, or consists of several sinuses. Wherefore in these kinds, the probe must be introduced, and the skin must be cut in two lines, so that betwixt them a very small habenula may be cut out(8), to prevent the lips from uniting presently; and that room may be left for pledgits of lint, as few of which as possible ought to be laid on; and the same course must be pursued as was directed in abscesses. But if, from one orifice, there shall be several sinuses, that sinus, that runs straight, must be opened with a knife, and the others, that branch from it, which will then appear, must be tied with a ligature. If any one penetrate so deeply, that an instrument cannot be safely used, a collyrium must be put in. The food, in all these cases, whether the treatment be by an operation, or by medicines, ought to be moist; the quantity of drink pretty liberal, and for a long time water. And when the flesh begins to sprout up, then indeed the bath may be used, but sparingly, and such food as plumps the body. CHAP. V. OF EXTRACTING WEAPONS OUT OF THE BODY.