De dolore disputatio medica

XVII.

Nutritional humors, such as plethoric and cachymic blood blood indicating bad humor or dyscrasia: or excrementitious ones, whether useful or useless. Yet we count the excrements of the gut among these latter ones most especially.

XVIII.

Spirituous matters, such as flatus gas or wind.

XIX.

The defect of the matter, as this very thing is variously considered, is various.

XX.

For if it is considered as a certain body and in quantity: it is considered as Natural, and gifted with motion or rest.

XXI.

It can therefore be at fault both in continuous quantity, while it abounds, and in discrete quantity, in number: and in motion.

XXII.

With respect to motion, because it is moved: [with respect to] rest, because it adheres in a less convenient place. For it is moved from part to part, or from the whole to a part, or from a part to the whole.

XXIII.

Therefore, while it is moved to a part, the principle of this motion is attraction, or transmission.

XXIV.

Attraction occurs by reason of the pain or heat existing in the suffering part: transmission [occurs] due to the power and strength of that which generates or sends it: just as [it also occurs] due to the weakness, humid, cold, or loose intemperies of the affected part.

XXV.

The consensus and placement of the parts among themselves also contributes much to the reception.