THE _Parotides_ borrow their Names from the Glands affected, which grow behind the Ears; but these Tumours are not to be distinguished from others but by their Situation, and therefore require not any particular Description here, so that amongst many Instances I shall give but one to discover their Nature; In a certain Youth there arose a _Parotis_ on each Side, behind the Ears, which after Suppuration and Incision, let out great Quantities of _Pus_, and were afterwards by a Surgeon healed up; but the musculous Flesh was at this Time so wasted, as to discover a Sight as pleasant as strange, _viz._ the external jugular Veins, with the Arteries under them, the recurrent Nerves, the Tendons, the OEsophagus, and in short all the Vessels quite bare and untouched; but upon the Patient’s Recovery all filled up as before with new Flesh. A Conjecture of _Diemebrooeck_ comes here in our Way to examine; he will have it that Buboes are produced from an Ebullition of a saline and an acid Humour meeting together, like a Mixture of Salt of Tartar and Spirit of Vitriol: But whence can such a vast Coagulation arise? Indeed I do not deny but that a Tumult and Bustle may be occasioned by the Concourse of such Principles, as also that from such a Colluctation some saline Particles may be precipitated; and it must further be allowed, that a Part will inflate and swell while such Fermentation continues; but yet I cannot apprehend how _Pus_ can be generated by such Means; for by an Effusion of such a Mixture the _Serum_ would be more changed into a _Lixivium_, than a purulent Matter; after the Conflict likewise is over, the Tumour would immediately subside and vanish; but, on the contrary, Buboes daily and gradually come to their Height of Suppuration: But I shall not detain the Reader on this Head any longer, but proceed to a Description of a Carbuncle. A Carbuncle then is a small Eruption, whose Contents are soon discharged, after which it appears in a crusty Tubercle about the Bigness of a Millet Seed, gradually spreading, and encompassed with a very red and fiery Circle; arising first of all from an ichorous Humour, afterwards with great Pain and Heat, from a lixivious and caustick Poison.