y 6 Of the Caufe of a Teftilence, by fo much the more ealily will the In- fection penetrate into the Body ; and the more conftringed they are, the better Se- curity is there againft it, infomuch that hardly by any other Means can it enter. A Turgefcency of bad Humours greatly facilitates the Plague's Admiflion into any Perfon, whether fuch a morbid Conftitution arifes from the Suppreflion of ufual Eva- cuations, or from an erroneous Ufe of the Non-naturals % and xnoft of all, a Load of bad Humours from an Excefs or a Surfeit, leaves fo great a Similitude to the pefti- lential Poifon, as greatly to encourage its Admrffion. But befides theie Difpofitions of the Subject , it is much to the Purpofe to fuggefl this following Obfervation *, That the Plague is fometimes fo much heredi- tary, and influenced by a feminal Taint ? that in a common Contagion it mall exert it felf in fome much after the fame Manner upon Children, as in their Parents ^ as in the Smalt-Pox, and other Affections of like Na- ture. FOURTHLY, It is neceffary that there fhoulcl be a continual Lodgment of the pefrllential Poifon • for if the noxious Steams were
