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 of peftilenltit Difeafes. 5 i THIS Theory like wile might be further illuttrated by many Infhnces from inanima- ted Fluids, which are capable of being put into Fermentation by a very fmall Portion of Matter, and which ihall by fuch an Agi- tation from new Particles, or MolccuU having Properties of communicating the fame Effects' to another quiefcent Fluid ; not much unlike what we fee in the Communication and Pro- pagation of Fire, which is excited and car- ried on in proper Subjects from the minuter! Beginnings, and increasing alio In its owri Force as it fp reads. WHENa Perfon therefore falls into a Fever from any epidemic, or other more 1 private Caufe, and that Fever rifes to fuch a Degree of Malignity as is always fuppofed in a F eft Hence, as far as any Effluvia do exhale from that Perfon, fo far he may be laid to have round him a contagious and poifonous jitmojphere } becaufe there tranfpires from him fuch Particles as will excite in other Animals of like Conftitution, the fame fer- mentative Motions as thofe to which they owe their own Origin. ALTHOUGH therefore, in the Begin- ning of epidemical Difeafes,- and during the' - B 2 • Sufc