On the Tendency of Species to Form Varieties,- and on the Perpetuation of Varieties and Species by Natural Means of Selection. Raccoons: A Natural History - Page 191 by Samuel I. Zeveloff - 2002 - 200 pages Limited preview - About this book
...which Orchids are fertilised by insects, 2nd edn. London: Murray. Darwin, C. & Wallace, A. (1859). On the tendency of species to form varieties; and...selection. Proceedings of the Linnean Society of London, 3, 45-62. Darwin. F. (ed.) (1909a). The foundations of the origin of species. A sketch written in 1842...