On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (Darwin)

On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (Darwin): "On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (fifth thousand (second edition): London: J. Murray, 1860), by Charles Darwin (Gutenberg text, illustrated HTML, and page images)"