(Chapter 33) Footnote 32:

In the carnivores, “the foot posture is plantigrade, as in ursids and procyonids, or digitograde, as in canids, hyaenids, and felids.” (Vaughan, T.A., Mammology (2nd ed.). Philadelphia: Saunders College Publishing, 1978, p. 212. This sentence and the two preceding it (beginning with “I call the hind foot . . .”) are omitted from the 1555 edition.