Armand de Quatrefages, professor at the Paris Museum of Natural History, sets out the debate between those who held that all humans share one origin and those who believed in separate species. Drawing on animal and plant breeding, crossing and variation, he argues for a single human species, then surveys origins, migrations and the varieties of peoples.
A landmark of nineteenth-century anthropology; its classification of races reflects the assumptions of the 1870s, not modern science. Download the free EPUB.