The description of the two diseases by Actuarius is so precise that we shall give it in lieu of all the others. The alphi, he says, are superficial, but sometimes extend in depth, so that the hairs appear of the same colour. The white species is tried as to the depth it has spread, by being pricked moderately with a needle; when blood flows though the needle has only penetrated the skin, the disease is curable, but if the discharge be milky it is incurable, inasmuch as the flesh is converted into the disease. Others, he adds, rub the part with rough towels, and if it become red they have good hopes, but if it remain of the same colour they abandon all hopes of recovery. They are of a more aggravated nature when they affect different parts of the body and are inveterate. The alphi, he says, are generally milder than leuce, and can be cured by gentler means, but when they become inveterate they require similar treatment. The difference between the white and the black alphos is produced by the colour of the prevailing humour. There is scarcely any difference of opinion among the authorities respecting the general plan of treatment. Haly Abbas has correctly remarked, that the alphi are to be cured by the same sort of remedies as lepra (leuce?) only that they do not require so strong applications. The Arabians greatly commend their myrobalans with ginger, mastich, parsley, &c. Their internal applications are powerful detergents and escharotics, such as hellebore, natron, sulphur, vinegar, arsenic, copperas, &c. Celsus says nothing of internal remedies, but recommends external applications of a stimulant nature, containing sulphur, alum, nitre, frankincense, alcyonium, &c. In the ‘Isagoge’ it is said that all these complaints are to be cured by phlegmagogues, and by abstergent applications externally. Guy of Cauliac, and the other medical authorities of that age, describe these diseases by the names of _Morphea_ alba and _M._ nigra. They recommend applications containing sulphur, alum, natron, arsenic, and the like. As usual they are the mere copyists of the Arabians. SECT. VII.—ON STIGMATA, FROM THE WORKS OF ARCHIGENES.