Note 9 — Chapter VII

I do not here mean to fix on the more northern parts of the old world as the parent country of these two animals. I only want to point out the channel of communication—not the course of the stream—whether from west to east, or the reverse. Perhaps, when we recollect how extraordinarily the Pachydermata abounded during the Tertiary epochs in the Old World, and that the representatives of these animals now only exist in that quarter, it may seem most probable that the migration took place from Asia to America.