The disease generally attacks the hands, neck, face, or shoulders of butchers and others, who carry, or in some way deal in carrion. It has also taken place in consequence of the hand being introduced into the rectum—a veterinary method of removing scybala—of an animal labouring under putrescent disease. A pustule appears on the part affected, containing a serous or a dark-coloured fluid; and the base ulcerates, extending through the skin to the subjacent parts; at first it is accompanied with a pricking sensation, afterwards the pustule enlarges and becomes brown, and the pain is burning and itching. The vesicle when opened, or when it has burst spontaneously, furnishes a few drops of red serum, and the pain is thereby relieved for a few hours. A hard, moveable, and circumscribed tubercle forms, without alteration of the surrounding skin. The bottom of the sore is yellow, greenish, or livid, and the sensation is that of acute heat and erosion. Phlyctenæ spread around. The tubercle becomes black in the centre, and an eschar forms; the patient becomes irritable and languid. The gangrenous point begins to extend, and that alarmingly; great swelling takes place, elastic, red, and shining, more emphysematous than inflammatory or œdematous. The burning pain is aggravated; the patient has a feeling of weight and stupor; great constitutional disturbance follows, there is slow fever, with a small pulse, a dry and brown tongue, and unquenchable thirst; a low muttering delirium ensues, and under these symptoms the patient soon sinks. After death, the fetid body swells rapidly. The disease sometimes terminates fatally in twenty-four hours or less; but generally the patient’s sufferings are more protracted. In the treatment, superficial scarifications are of little avail. The only topical application which can be relied on is a powerful escharotic, applied freely to the part, and at an early stage, before swelling and constitutional affection have been added. By it the parts replete with virus, being immediately deprived of vitality, are soon thrown off. Thus the virulence of the poison is annihilated, it is rendered inert, and is concentrated in the slough, and the surrounding parts are stimulated, and receive vigour of action, which enables them to resist any further inroad, and to detach quickly the mortified substance. For this purpose, the most effectual and convenient escharotic is the caustic potass, but the liquid muriate of ammonia may also be employed. The vesicle is opened, and the caustic applied to the exposed surface; and if necessary, the eschar may be afterwards divided, and the remedy reapplied. In the absence of other escharotics, the actual cautery will prove a valuable substitute. After the separation of the slough, the sore is to be dressed with slightly stimulating applications. Bark, camphor, and mineral acids, are given internally, and the patient is enjoined a light diet, with a moderate allowance of wine.