Fig. 1

Two of the tables Jefferson used as evidence against the theory of New World degeneracy. a Here Jefferson compares the size of (a small sample set of the) animals found in both the New World (in this case represented by America) and the Old World (represented by Europe), and finds no evidence that those in the latter are larger. b In this table Jefferson compares the size of animals found only in the New World and those found only in the Old World (represented by Europe). Again, he finds no evidence that those in the latter are larger