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 64 Of the Caufe of a Teftilence, Experiments, were there any Doubt about it. I T being then granted, that this Plague firft was brought from Africa, or Afia, to Holland^ and from thence into Britain, every one may eaflly conjecture, how much Al- teration it muft undergo in fuch a Travel, from a hot and dry Climate, into a moift and cold one, not fo much in its own Na- ture, as from the Vehicle of Air which conveyed it, and thereby producing diffe- rent Degrees of Infection, and Series of Symptoms : But this Variation would be mofr. difcernable in the Complication of the peftilential Seminium, with the particu- lar Difeafes of each Country, and thofe which are as it were peculiar to them : This in our Cafe is very well worth No- tice, for in Holland, where the Scurvy ex- treamly reigns, and therefore, for Reafons before given, moil liable to a peftilential Infection, it obtained only as a more ag- gravated Scurvy, as fhall hereafter be fur- ther remarked. A S for that Opinion of the famous Kir c her, about animated Worms, I muft confefs I never could come at any fuch Dil-