distaff-thistle (atractylis,) and moreover that called Italicum, and any others of tried efficacy. * * * * * COMMENTARY. The resemblance here pointed out between an ulcer too strongly stimulated and one too little is highly deserving of attention. Our author appears to have borrowed his description from Oribasius, who however abridges it from Galen. Galen and Aëtius give a somewhat fuller account than our author, but their principles of treatment are the same. They remark that frankincense in humid intemperaments engenders flesh, but in dry ones only pus. Pompholyx burnt and washed; calamine and the shells of oysters are said to be incarnant and dissiccant without pungency. Galen inculcates that the greatest difficulty in treating these ulcers, is to find out the nature of the intemperament of the part, and correct it. Celsus gives the following list of incarnants: Carnem alit et ulcus implet resina pinea, ochra attice, vel asterace, cera, butyrum. He recommends the use of hot water; an application consisting of butter, roses, and a small portion of honey; or the tetrapharmacum with roses. He approves of giving wholesome and nutritious food, such as fowls, venison, pork, and even wine. The list of the Pseudo-Dioscorides contains nearly the same articles as that of Celsus. (Euporist. i, 186.) Octavius Horatianus recommends a composition of equal parts of honey, turpentine, rosin, and wax, melted in a vessel; or a mixture of powdered rosin, wax, and fat. Scribonius Largus recommends basilicon, and a composition consisting of calf’s marrow, the fat of geese, butter, stag’s marrow, wax, turpentine, honey, and roses. Avicenna remarks, that in treating hollow ulcers we must not use very desiccative applications, as they dry up the fluids which are necessary for forming flesh; nor for the same reason, very astringent applications, nor abstergents of any greater strength than to remove the sordes. Rhases recommends a mixture of equal parts of olibanum, aloes, sarcocolla, and dragon’s blood. Camphor is an ingredient in one of his incarnative applications. Alsaharavius makes mention of an application from olibanum, like that of Rhases. All the ancient authors say that round ulcers are more difficult to heal than those of any other shape; and Cassius Medicus and Alexander Aphrodisiensis assign various reasons for this, the most probable of which seems to be, that in this case the sound parts are further removed than in any other. Apollonius Dyscolus states that ulcers are prevented from healing by pregnancy, by disease of the spleen, and by varicose veins. (Histor. Mirab. 42.) SECT. XLI.—MEDICINES FOR CLEANSING FOUL ULCERS.