A brief essay on the small-pox and measles, [electronic resource] : plague, malignant and pestilential fevers. In three parts. The First containing, An Account of the Small-Pox and Measles, with the Nature and Effects of that contagious Poison, with the Discovery of a Sovereign Specifick Remedy, and new Method of treating the same; whereby the Lives of Thousands (which are Yearly swept away by this constant Species of the Plague, which always less or more abounds in Europe, but more especially in Great Britain) will be saved; and their Natural Beauty and Complexion preserv'd. The Second gives an Account of the Nature and Effects of the Plague, Pestilence, Malignant, Contagious, Putrid, and Pestilential Fevers; shewing the Affinity that each have with one another; proving, That they only differ in Degree of Malignity and Contagion. The Third Part prescribes a Method of Cure and Prevention for all the said Diseases, after a new and more rational Manner than any yet extant. By Phil-Anthropos, M.D.