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32 and this is so constant and so necessary, that it seems equally required for the Recovery of the Patient with the ripening of the Eruptions it self; and this Evacuation by the Glands of the Mouth is more or less copious, and continues a less or greater Space of Time, according to the different Degrees of Putrefaction in the Blood, a considerable Part of which is destin'd to be excluded by these Sluices; for tho' the greatest Portion of the corrupt or mortified Particles of the Blood and Humours are expelled by the sound and active Principles into the external Parts of the Body, yet a great Quantity of it, which is not by Reason of its disproportion'd Bulk and Figure capable of being determined and transmitted to the Surface of the Body, is drain'd through the Salival Glands, and carried off by copious Spittings; as Nature as well as Art in some other Cases discharges the noxious Humours that cause Distempers by a Flux of Humours issuing from the Glands of the Guts; so by this inverted Purgation, performed by the Strainers of the Mouth, the Blood is freed in a great Measure from the Matter of the Disease mingled and diluted with the ejected Serum. This Evacuation, I have said, begins usually about the eighth Day, and continues according as the Exigencies of Nature require, that is, till that Part of the purulent Matter which is communicated to it, is discharged: But sometimes this Province of Salivation is executed in an irregular Manner both