Queries on ratios of species to genera on southern islands. Darwin's observations on distribution of Galapagos organisms, and on S. American fossils, and facts he has gathered since, lead him to conclusion that species are not immutable; 'it is like confessing a murder'.
Request reproduction rights to this image
Add this image / page to your personal bookmarks for quick access later.
This image has the following copyright:
Do you want to download this image?