could not free the Blood from the putrefied Parts, that fed the Gangreen, and therefore it still continues to discharge and lay down in some other Place the corrupt Materials, till it has destroyed the Fabrick. This Observation makes it evident that corrupt and lifeless Particles may be contain'd in the Mass of Blood; which I therefore call a State of Putrefaction or Mortification, as said before; for as I have elsewhere asserted this Notion, so I still believe it is just and well founded upon Reason and Experience.
The Confluent Kind then are diversified from the Distinct externally by the running together of the Pustules and copious Spitting or Salivation at the eighth or ninth Day, and internally by the Corruption of some Parts of the Blood, which in the last Sort is unbroken and entire, tho' flutter'd and disorder'd in its Texture and Symmetry. There are also various Steps and Gradations to be observ'd in this Species of the Small-Pox arising from the different Degrees of Putrefaction, which constitutes this Kind; the lowest and most favourable come out on the third Day distinct at first, and almost as large, as the Sort of that Denomination, but after some Time they run together, when in their Growth they swell, and by enlarging their Borders, they break the thin Fences that separate them from one another, and shew themselves to be of the Confluent Sort. In this Species the Pustules are often more elevated and bold, and being con-
