54 Of the Caufe of a ^efttlence^ a considerable Stench along with it into very diftant Parts. SECO NDLT y A- -fit Medium is very conducive to the Propagation of the Plague ^ for according to the Difpofition of that, in being 'more or lefs open or confined, is the Infection (boner or flower communica- ted : Nor is there any Doubt, but that the Air is this fit Medium^ and whofe Pores, aitho' very minute, are readily filled with it j and therein the noxious Effluvia lodge (ecurely, unlefs expelled by any ex- ternal Force. THE Air is moreover the more con- venient Recepticie and Conveyance of this peftilential Poiibn, on account of that ni- trous Spirit with which it abounds ^ hence it more eafily receives the poifonous Aura, and faithfully p refer ves it as in a proper Confervatory, and on this Account the per- nio 'ous Qualities, (unlefs firit derlroyed by feme uncommon Power) (boner reach any Subject, to act. upon, and float about in Readme fs for Deft rucl ion : Sometimes a Kb the peftile.;tial Mdfmdta may be broke and deftroyed by the Occurfion of others, with-
