Note {408} — Chapter VI · ON THE GEOGRAPHICAL DISTRIBUTION OF ORGANIC BEINGS IN PAST AND PRESENT TIMES

See Origin, Ed. i. p. 403, vi. p. 558, where the author speaks of Alpine humming birds, rodents, plants, &c. in S. America, all of strictly American forms. In the MS. the author has added between the lines “As world has been getting hotter, there has been radiation from high-lands,—old view?—curious; I presume Diluvian in origin.”