When the sore remains fungous, the proud flesh sprouts out in little bunches, and the matter is muddy and stinking, it is almost a sure sign the bone is foul; and if you examine with a probe, you may generally feel it, or even see it, and the bone, is sometimes black, brown, &c. and generally very rough on the surface. In such a case, continue the dressing as before observed, and frequently examine whether the scale loosens; at the same time examine (not too roughly) which way the scale inclines, also the bigness of it; and if there is a probability of extracting it, so that the fungosity only stops it, then freely use a bistoury to make way for it; but in this be not in too great a hurry, for care should be taken (as I have said above) not to extract the scale, till the separation from the fresh bone is mature. If an ulcer is sinous, inject in the sinus, a mixture of burnt allum and water, viz. No. VII _Take water two ounces; burnt allum_ (17) _two drachms; mix them well for injection._ After two or three dressings with this, inject the _antacrid injection_. No. VIII _Take two ounces of water, with one scruple of calomel_ (N), as I have described in my treatise on the venereal disease. This is the proper management of ulcers in general, and will ever be attended with success, even in the most inveterate kind. In venereal ulcers, the mercurial ointment with the precipitate, may be applicable, especially in shankers. I shall therefore end this section, for having directed the management of the worst of ulcers, the inferior kind will of course yield to the same method. ------------------------------------------- SECT. III. _Of Diseases of the Skin_ Under this head I shall consider all kinds of breaking out, exclusive of that, which attends inflammatory and acute fevers, as they are all of one nature, and will all yield to one method of cure.—All proceed from a corrupted humour, which nature endeavours to expell from the body, by driving them to the surface, as that is the least resisting part. _Of the Itch._ The itch may either proceed from original acrimony, or it may be catched from a mess-mate who is infested with the disease. In itself it is of different kinds, but the diversity in this respect depends principally on the habit of body afflicted with it. Sometimes it is dry, scaly, and attended with very great itching; in that case, it proceeds generally from a scorbutic habit, and is attended with a slow inward fever. Sometimes it is more moist, and utters itself with bladders all about the hands, particularly betwixt the fingers, and is a sufficient testimony of the disorder. The principal indication is to purify the blood; and in the mean time recourse may be had to external means. A purge is first requisite.