TO this it may be added, that the pestilential _Petechiæ_ do not always fix in the same Parts, and sometimes they disappear, after a short Stay in one Place, and immediately rise in others: And indeed there is no Part altogether exempted from them, although they chiefly come out in the Neck, Breast, and Back; whereas those of the Scurvy come mostly in the extream Parts. The Reason of this in the former Case may probably be from the Proximity of the larger Vessels, and the Largeness of the Pores about the Trunk of the Body; and in the Scurvy, the Legs particularly are most spotted, from the Tendency and Precipitation of the saline Particles downwards. THE Spots were sometimes few, but most commonly very numerous; in some they were so thick, as to cover in a manner the whole Skin. I saw a little Girl that was all over full with them, but upon a large Sweat arising, they all disappeared, and she recovered; yet sometimes the Distemper was so delusory, that these Spots would arise, and disappear, and come out again, for several Times; that is, when Nature gave its utmost Efforts to expel the Poison, they might be seen upon the Surface; but when the Spirits languished, or upon any external Cold, they would go in again. I might here conveniently observe, that this Eruption was almost always symptomatical, and very rarely critical; the Colour of them was not always the same, sometimes they were red, or purple, at others yellow, and sometimes livid or black, according to the Nature and Energy of the morbifick Venom, and its Complication with other Contingencies; and hence we naturally pass to the essential Characteristicks of a Pestilence. THE genuine pestilential Characters, by the common People amongst us called _Tokens_, as the Pledges or Fore-warnings of Death, are nothing else than minute and distinct _Blasts_, which have their Origin from within, and rise up with a little pyramidal Protuberance, having the pestilential Poison chiefly collected at their Bases, and, according to the accustomed Dispersion of such Agents, gradually tainting the neighbouring Parts, and reaching to the Surface, as the Configuration of Vessels and Pores are disposed to favour their Spreading. MOREOVER these Blasts were derivable from external Causes, as from the Injuries of Air, where the pestilential _Miasmata_ were pent up and condensed, and by that Means their Virulence increased to that Degree, that Life it self was immediately extinguished, upon coming within their Reach. Nay, some were so suddenly marked with these fatal Characters, that they did not before find themselves in any other Respect out of Order; which is a Circumstance so well known, that there is little need to confirm it by particular Instances, however, for the Reader’s Satisfaction, I shall recollect one or two Facts of this Kind.