The PREFACE.
PƲtrid Feavers are divided, into Continual, or intermitting. The continual Putrid Fea∣vers are generated when a putrid Vapor, or a preternatural Heat, which ariseth from pu∣trefied Humors, doth perpetually afflict the Heart, and stirs up therein a continual Heat; from whence likewise is perpetually diffused a Feaverish Heat into the whol body. But the intermitting Feavers are caused, when the said Vapors are carried unto the Heart, only at certain distances of time. Continual Feavers are again divided into Essential, and Primary, or Symp∣tomatical. Those are called Essential and Primary, which spring from a putrefaction inflamed in the common Veins, and not in any particular part of the Body. Those are Symptomatical that arise from the putrefaction or suppuration of som particular part inflamed; out of which part by commu∣nion of the Vessels, a putrid vapor may continually be carried unto the Heart: Such feavers are seen in the Pleurisie, Inflamation of the Lungs, Inflamation of the Liver, and in the Inflamation of other Internal Parts. Again, the Primary continual Feavers are two-fold; for some are without a∣ny Exacerbation or Fits, and remission, but continue alike from the beginning to the end, and are called Sunochi, or Continentes. But others have manifest Exacerbations or fits, and remissions, and are called Sunecheis, or Continuae, by the name of the kind. And these again from the difference of their Exacerbations or fits, and remissions, are divided into three sorts. For some are called continual Tertians, which have their Exacerbations or fits every third day; others continual Quo∣tidians that are exasperated every day; others continual Quartans, that are exasperated every fourth day. The intermitting Feavers or Agues, are likewise divided into Tertians, Quotidians, and Quartans, according as their Fits are wont to return every third, every fourth, or every day. There are other Differences of Feavers likewise, which are either Accidental, or arise from the Composition of those aforesaid; all which we shall Particularly and briefly Explain.