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of peftilential Difeafes. 29 to be influenced by it : And by the BeJllnian Do&rine we are taught, how all thofe Changes are made in the Blood, when thrown into a Fever, even from the moft fun pie Ephemera, to the moft complicated and malignant Cafes whatfoever ; to which therefore the Reader muft be referred, for a clear Under ftanding of fuch Matters; it being fuificient to our Purpofe here to obferve, that he demonftrates all Fevers to be attended with fome Fault in the BJood's Motion, Quantity, or Quality, or in fome or all of them together; and that its chief Fault in Quality, (which is moft to the prefent Cafe) coniifts in an unequable Fluidity, fome Parts of it being rendered thinner, and others thicker at the fame Time, than in a natural State; not unlike what happens to all coagulated Li- quors. FROM this Condition of Blood, this great and wonderful Man goes on to ihew, through the whole Courfe of his Propor- tions, that the coagulated Part, which he commonly diitinguifhes by the Name of Lentor, does accumulate in the capillary Veffels until their Endeavours of Reftitu- tion, as in all Elaftick Bodies, are greater than