Haly Abbas adopts the division laid down by Galen (Theor. viii, 10.) His treatment also is quite similar (Pract. iii, 29.) In the translation of Alsaharavius the three varieties are described by the names of formica or erysipelas muscina, formica corrosiva (herpes exedens?), and formica miliaris. He describes the formica corrosiva as being a dangerous complaint, spreading deeper and deeper. His treatment, although amply detailed, contains nothing remarkable (Pract. xxix, 9.) The earlier modern writers on medicine being the servile copyists of the Arabians, describe herpes by the name of formica, as a disease nearly allied to erysipelas, and like it arising from corrupted bile. See Guy of Cauliac (ii, 1), and Theoderic (iii, 16). For the herpes esthiomenos or lupus they recommend the application of arsenic or the actual cautery. SECT. XXI.—FOR ERYSIPELAS. Galen, giving the name of erysipelas, more especially to the swelling formed of a hot and thin blood, to that which is formed of both blood and bile, he applies an appellation from the prevailing humour, calling it erysipelatous inflammation when blood prevails, and inflammatory erysipelas when yellow bile prevails. But in general the swelling formed of hot blood and bile is called by him erysipelas. Whatever division we adopt, it will make no great difference as to the treatment. But it is proper to know that erysipelas is a most dangerous disease, more particularly about the head; so that if active treatment be not resorted to, it will sometimes prove fatal to the patients by suffocation. At its first appearance then we must open a vein at the elbow, especially the humeral, or, if it cannot be seen, any one that appears. But if any thing prohibit venesection we must have recourse to purging by cholagogue medicines. The same treatment may be applied to erysipelas of other parts, or we may administer strong clysters. And we are to rub the parts affected by erysipelas with cooling things, in order to repel the defluxion, and with moderately heating and moistening things so as to dissipate that which is collected, before the parts become livid or black; but the parts which are anointed are to be kept constantly in a wet state, by frequently changing the applications, which may be done by cleansing them with soaked sponges: for the heat of the part by converting them into vapour soon renders it dry. As I have said, erysipelas at the beginning requires such things as are cooling and moistening, without astringency; such as house-leek, purslain, and fleawort; the marsh lentil, endive, and gourd; the nightshade, henbane, lettuce, and horned poppy. And parsley, and the leaves of rhamnus by themselves, and made into a cataplasm with bread, are proper applications; also cerates used with very cold water; but we may mix with them some opium, the juice of poppy, cicuta, and mandragora, and thus form them into compound applications. And a cerate may be made of white