We shall give the description of this disease. There were no constant premonitory symptoms; it often broke out quite suddenly, but many complained some days before of debility, despondency, want of appetite, nausea, headache; sometimes also of giddiness and slight chilliness. Many retired to rest in health, and awoke during the night with the disease, covered with a perspiration, which ceased only with death or recovery. With some the sweating was preceded for some hours, or even only for some moments, by a scarcely perceptible feverish commotion, accompanied with burning heat, or with a _sensation of pain_ which ran through every limb, and nearly always with spasms in the stomach. With others the disease announced itself by lacerating rheumatic pains, which gradually increasing, they became bed-ridden. The mouth was foul, the taste at times bitter, the tongue white, more rarely tinged with yellow, and thus it remained till the patient was restored. The sufferer was shortly covered with _a thick, peculiarly fetid sweat_, that certainly produced alleviation, but became very intolerable to him from its unpleasant stench, which was even communicated to the clothes of the bystanders. In the mean time it was discovered by the pulse, that the fever had considerably abated; but, on the third day, the patient was seized with convulsive _spasms in the stomach_, great _oppression at the chest_, and a sensation of suffocation—symptoms which caused him insupportable anguish. These attacks accompanied by hiccup and eructation, continued for several hours, and returned from time to time, an eruption, partly papular, simultaneously breaking out first on the neck, then on the shoulders down to the hands and breast, less frequently on the thighs and face. The little pimples were of a pale red colour and conical, with glistening heads, and between them appeared innumerable small miliary pustules, filled with transparent serous fluid, which soon thickened and assumed a whiter hue. At the time and previous to the breaking out of the exanthem, the patient experienced a very severe _burning and pricking sensation in the skin_, which nevertheless sometimes occurred on the second or fourth day, and which increased sometimes in one part, sometimes in another, when the sweating declined.