Cassii iatrosophistae naturales et medicinales quaestiones LXXXIIII, circa hominis naturam & morbos aliquot

CASSI I.

has a stronger motion in the middle part, to such an extent that the flame is often carried upward from there in leaps: similarly, round ulcers, because they tend toward the middle as if drawn into themselves, for that reason it happens that a more agitated motion occurs in them. The motion occurs, naturally, because certain small bodies original: "corpusculis" referring to atomistic particles are carried outward through the passages, by whose vehement transit the induction of the scar happens to be repelled. But against these things, it can be answered that if the vehement outward motion of these small bodies is the cause that ulcers of this kind are difficult to heal, it would first be necessary for this to happen in those who are in the prime of life, and for their ulcers to be able to be healed with difficulty. Since in the vigor of age, these small bodies are carried both most abundantly and most rapidly: in the elderly, on the contrary, they are both few and slow in motion, yet in the meantime, these kinds of ulcers coalesce with more difficulty in old age. Wherefore