5>8 Of the manifeft Signs panied with a Fever. But this Fever indeed was in fome very low and concealed, though in others it appeared openly •, and he muft be but little acquainted in phyfical Practice, who hath not frequently obferved, that in malignant Fevers their Beginnings are hard- ly difcernable, being accompanied with no Heat, no Inequality of Pulfe, and no Thirfr, although fecretly indicated by fome other lurking Symptoms * ? and the Manner in which fuch Patients expire, demonstrates, that they could not be altogether free of a Fever* There are many Circumftances indeed which make it thus difficult in the Acceffion to dilcern its Approaches, as a Want of Tur- geicency of Blood in the Veins and Arte- ries, through Defect ol Room for fuch Commotion and Depuration, or becauie the Blood is fo thin, crude, and degenerate, that it cannot but with Difficulty ferment and grow hot •, or becauie the peftilential Miafmata feem at their firft Infinuation. fo friendly to the Conftitution, as to ftir up no remarkable Alteration in the Blood; or from its cold and ftyptick Quality, retard- ing or fuppreffing fuch an Agitation. WHEREFORE no Body mould con- jecture, that there is no Fever at all where
