(Chapter 31) Footnote 23:

See Ch. 23 note 31 on this error in Aristotle Progression of Animals 704a17-b6: “A man and a bird, being both bipeds, have opposite bendings of the legs. For a man bends his legs in a convex direction, a bird in a concave direction; . . . and viviparous quadrupeds bend their limbs in the opposite way to a man’s and in opposite ways to one another; for they bend their front legs convexly and their back legs concavely.”(Loeb trans. by E.S. Forster) For the repetition of the error in Galen’s De usu partium, see Ch. 23 n. 22. For dinner-table anatomy, see Ch. 29 note 45.