Sec. 276. This Distemper often shifts its Situation; it sometimes retires suddenly; but the Patient is uneasy and disordered; he has a Propensity to vomit, with a sensible Anxiety and Heat: the _Erisipelas_ appears again in a different Part, and he feels himself quite relieved from the preceding Symptoms. But if instead of re-appearing on some other Part of the Surface, the Humour is thrown upon the Brain, or the Breast, he dies within a few Hours; and these fatal Changes and Translations sometimes occur, without the least Reason or Colour for ascribing them either to any Error of the Patient, or of his Physician. If the Humour has been transferred to the Brain, the Patient immediately becomes delirious, with a highly flushed Visage, and very quick sparkling Eyes: very soon after he proves downright frantic, and goes off in a Lethargy. If the Lungs are attacked, the Oppression, Anxiety, and Heat are inexpressible. Sec. 277. There are some Constitutions subject to a very frequent, and, as it were, to an habitual _Erisipelas_. If it often affects the Face, it is generally repeated on the same Side of it, and that Eye is, at length, considerably weakened by it. Sec. 278. This Distemper results from two Causes; the one, an acrid sharp Humour, which is commonly bilious, diffused through the Mass of Blood; the other consists in that Humour's not being sufficiently discharged by Perspiration. Sec. 279. When this Disease is of a gentle Nature, such as it is described Sec. 273, it will be sufficient to keep up a very free Perspiration, but without heating the Patient; and the best Method to answer this Purpose is putting him upon the Regimen so often already referred to, with a plentiful Use of Nitre in Elder Tea. Flesh, Eggs and Wine are prohibited of Course, allowing the Patient a little Pulse and ripe Fruits. He should drink Elder Flower Tea abundantly, and take half a Drachm of Nitre every three Hours; or, which amounts to the same Thing, let three Drachms of Nitre be dissolved in as much Infusion of Elder Flowers, as he can drink in twenty-four Hours. Nitre may be given too in a Bolus with Conserve of Elder-berries. These Medicines keep the Body open, and increase Urine and Perspiration.