Note {279} — 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 case is more briefly given in the Origin, Ed. i. p. 213, vi. p. 326. The simile of the butterfly occurs there also.