As the cause in the fote cãnot trouble the flanke and leue the knee (the mean betwixte) except there were a greater consent and likenes of nature in sufferance (whiche we call _sympathian_) betwixte those then thother. Nor fire refusynge stones, canne burne hardes, strawe, stickes and charcole, oile, waxe, fatte, and seacole, except these same first of al wer apte, and by conuenient qualities disposed to be enflamed and burned. Nor any man goeth about to burne water, because the qualities thereof be contrary, and the body vndisposed to the like of fire. By whiche reason it may also be perceiued, that y^e venemouse qualitie of this corrupt aire is (20) [= (19)] hote and moiste, for it redily enfectethe the lyke complexions, and those nigh vnto theim, and the contrary not at all, or hardly: & easely doth putrify, as doe the Southe wyndes. Therfore next vnto those colde and drie cõplexions, olde men escaped free, as like to theim by age: and children, as voide of replecion consumed by their great hete, and therefore alwaies redy to eate. But in this disease the subtile humour euill and abundant in full bodies fedyng y^e spirites, is more to be noted then the humour complexional, whiche notwithstanding, as an helper or hinderer to y^e same, is not to be neglected. For els it should be in all contries and persones indifferently, wher all complexiones be. The thirde and laste reason is, y^t they which had thys sweat sore with perille or death, were either men of welthe, ease, & welfare, or of the poorer sorte such as wer idle persones, good ale drinkers, and Tauerne haunters. For these, by y^e great welfare of the one sorte, and large drinkyng of thother, heped vp in their bodies moche euill matter: by their ease and idlenes, coulde not waste and consume it. A comfirmacion of this is, that the laborouse and thinne dieted people, either had it not, because they dyd eate but litle to make the matter: or with no greate grefe and danger, because they laboured out moche thereof. Wherefore vpon small cause, necessarily must folowe a smal effecte. All these reasones go to this ende, that persones of all contries of moderate and good diete, escape thys Englishe _Ephemera_, and those be onely vexed therewith, whiche be of immoderate and euill diete. But why? for the euill humores and corrupte aier alone? No, for thẽ the pestilence and not the swet should rise. For what then? For y^e impure spirites corrupte in theim selues and by the infectiue aier. Why so? for that of impure and corrupte humores, whether thei be blode or others, can rise none other then impure spirites. (20) For euery thynge is suche as that whereof it commeth. Now, that of the beste and fineste of the blode, yea in corrupte bodies (whyche beste is nought) these spirites be ingendred and fedde, I before expressed. Therfor who wyl haue them pure and cleane, and him selfe free from sweat, muste kepe a pure and cleane diete, and then he shalbe sure.