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 j 2 The Caufes and Cure Subfiftence of their common Caufes, parti- cular Regard is to be had to thefe Caufes, and the Manner whereby they affect the Peo- ple 5 yet when it is come to this pafs, that the Fever it felf is productive of a Poifon, or fomewhat intirely difagreeable, that commu- nicates the fame Impreilions upon others, without any Concurrence of the firft Caufe, then fuch a Fever is truly a Peftilence by Contagion, and all precautionary Regards ought peculiarly to be fuited, to prevent its Infection or Spreading j either by keeping the well Subjects clear from the Sick, or de- itroymg the Influence of the poifonous Ex- halations, or fortifying the found againfHt. But to thefe Ends, it is neceffary to have fome tolerable Notion of the Manner how thefe fecret Deilroyers are continued, and conveyed to great Diiiances. THE moft common Manner of convey- ing and fpreading a Contagion, obfervable in the preceding hiftorical Collections, and which alfo is the Cafe of our prefent Ap- prehenfions from Abroad, is by infected Per- fons and Merchandize - 7 it being attefted by too many Facts to admit of the leaft Doubt, that even Packs and Bails of Goods carry ) the poifonous Mlafmata about with them; and