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or because of other external causes, it is more or less thickened and hardened, and finally concretes into a plaster-like solidity.
VII.
Among the antecedent causes, the εὐπάθεια susceptibility/easy affection of the joints and the influx of humor redundant in the body to the joints hold the principal place.
VIII.
The εὐπάθεια susceptibility of the joints consists in an immoderate laxity and rarity of the parts, ingrained from birth or acquired subsequently.
IX.
Humor is redundant in the body if it is either generated in too great a quantity in its sources, or if, once generated, it is not purged away when it should be evacuated.
X.
It flows into the locations of the joints, either by attraction or by transmission.
XI.
It is attracted from neighboring parts, and the rest of the body, when the joints are immoderately hot, rendered hotter for any reason whatsoever, or are afflicted by a more vehement pain.
XII.
It is transmitted when weaker joints receive the humor that other particles expel as troublesome to themselves, by reason of quantity, quality, or both. For the parts of the body are so combined among themselves that, from those parts which are more robust, they cast off into others what is superfluous and offensive to themselves, until it has reached the most weak parts, which cannot exonerate themselves into others.
XIII.
Furthermore, the humor that has flowed in is detained because, either because