Note 160 — PART II. (continued 2)

In the Aristotelic theory, a third kind of movement, ratione termini, was admitted—that is, movement towards dimensive quantity, as when an animal or a tree grows in bulk. But bodies acquire greater bulk by accession of new particles, and this accession is carried on by local movement. Hence it seems to us that the motus ad quantitatem is not a new kind of movement.