Note {298} — Chapter III · ON THE VARIATION OF INSTINCTS AND OTHER MENTAL ATTRIBUTES UNDER DOMESTICATION AND IN STATE OF NATURE; ON THE DIFFICULTIES IN THIS SUBJECT; AND ON ANALOGOUS DIFFICULTIES WITH RESPECT TO CORPOREAL STRUCTURES
Reading edition
This is one of the most definite statements in the present Essay of the possible importance of sports or what would now be called mutations. As is well known the author afterwards doubted whether species could arise in this way. See Origin, Ed. v. p. 103, vi. p. 110, also Life and Letters, vol. iii. p. 107.