[CHAP. XII. Of Diseases produced by Conceit.]
AS there are numerous sorts of Diseases, so there are numerous manners or ways of the production of Diseases; and those Diseases that are produced by Conceit, are first occasioned by the Rational Corporeal Figurative Motions: for, though every several Conceit, or Imagination, is a several Rational Corporeal Figurative Motion; yet, every Conceit or Imagination doth not produce a Sensitive Effect: but in those that do produce a Sensitive Effect, it is the Conceit or Imagination of some sorts of Diseases; but in most of those sorts that are dangerous to Life, or causes Deformity: The reason is, That as all the Parts of Nature are Self-knowing, so they are Self-loving: Also, Regular Societies beget an united Love, by Regular Agreements, which cause a Rational Fear of a disuniting, or dissolving; and that is the reason, that upon the perception of such a Disease, the Rational, through some disorder, figures that Disease; and the Sensitive Corporeal Motions, take a pattern from the Rational, and so the Disease is produced.
[The Tenth Part.]
[CHAP. I. Of FEVERS.]
Some are of opinion, That all, or, at least, most Diseases, are accompanied, more or less, with a Feverous Distemper: If so, then we may say, A Fever is the Fundamental Disease: but, whether that Opinion is true, or no, I know not; but I observe, there are many sorts of Fevers, and so there are of all other Diseases or Distempers: for, every alteration, or difference, of one and the same kind of Disease, is a several sort. As for Fevers, I have observed, there are Fevers in the Blood, or Humours, and not in any of the Vital Parts; and those are ordinary Burning-Fevers: and there are other sorts of Fevers that are in the Vital Parts, and all other Parts of the Body, and those are Malignant Fevers; and there are some sorts of Fevers which are in the Radical Humours, and those are Hectick Fevers; and there are other sorts of Fevers that are in those Parts, which we name the Spiritous Parts. Also, all Consumptions are accompanied with a Feverish Distemper: but, what the several Figurative Motions are of these several sorts of Fevers, I cannot tell.
[CHAP. II. Of the PLAGUE.]
There are Two visible sorts of the Disease named the Plague: The weaker sort is that which produces Swellings, or inflamed or corrupted Sores, which are accompanied with a Fever. The other sort is that which is named the Spotted Plague. The First sort is sometimes Curable; but the Second is Incurable; at least, no Remedy as yet hath been found. The truth is, the Spotted Plague is a Gangrene, but is somewhat different from other sorts of Gangren's; for this begins amongst the Vital Parts, and, by an Infection, spreads to the Extream Parts; and not only so, but to Forrein Parts; which makes not only a general Infection amongst all the several Parts of the Body, but the Infection spreads it self to other Bodies. And whereas other sorts of Gangren's begin outwardly, and pierce inwardly; the Plaguy Gangrene begins