The ulcers formed from pustules are cured by litharge mixed with fenugreek seed; and in compounding them, rose oil, or juice of endive, are used alternately, till the mixture have the consistence of honey. The proper composition for those pustules, which attack, infants, is of that stone, which the Greeks call pyrites p. viii. *. with fifty bitter almonds, and an addition of three cyathi of oil. But the pustules ought to be first rubbed with ceruss, and then anointed with this. [Sidenote: _Of the scabies._] The scabies is a hardness of the skin, of a muddy colour, from whence pustules arise, some of them moist, others dry; from some of them issues a sanies; and in these there follows a continued itching ulceration, which in certain cases spreads very fast. In some people it goes entirely off, in others it returns at a certain season of the year; the greater its asperity, and the more it itches, the more difficult it is to cure. And therefore this species of it the Greeks call agria[FM], that is, cruel. [FM] ἀγρία. In this also the same diet is necessary, as above prescribed. The medicine proper for this in its beginning, consists of spodium, saffron, verdigrease, each p. i. *. white pepper, verjuice, each p. i. *. cadmia p. viii. *. But where there is already an ulceration, that, which is composed of sulphur p. i. *. wax p. iv. *. liquid pitch a hemina, two sextarii of oil. These must be boiled together to the consistence of honey. There is also another, which is said to have been invented by Protarchus. It contains a sextarius of lupine meal, four cyathi of nitre, a hemina of liquid pitch, half a pound of liquid resin, and three cyathi of vinegar. It is also proper to mix saffron, lycium, verdigrease, myrrh, ashes, in equal quantities, and boil them in passum. This heals every kind of scabies. And if there be nothing else at hand, lees of oil boiled to a third part, or sulphur mixed with liquid pitch, as I prescribed for cattle, relieve men also labouring under the scabies. [Sidenote: _Of the impetigo._] Of the impetigo there are four species. The least malignant is that, which resembles the scabies. For it is red, hardish, ulcerated, and corrosive. But it differs widely from that, which is more ulcerated(90), and has pustules like to vari; and there appear to be in it somewhat like air bubbles, from which, after a time, something like scales come off; and this is more certain in its returns. The second kind is worse, and is not unlike the papula, but of greater asperity and a more ruddy colour, having various figures; scales fall off from the surface of the skin, there is a greater erosion, it spreads more quickly, and broader, and both comes and goes at more certain intervals than the former. It is called the red.