The Descent of Man, and Selection in Relation to Sex, Volume 1

acquired adult apes appear B. A. Gould baboon Bates beautiful become beetles believe birds birth body breeds Brehm butterflies chapter civilized coccyx common conspicuous crustaceans degree developed distinct species doubt early progenitors elytra existence extremely fact faculties feel females fertility Fritz Müller genus given greater number habits hair Hist horns individuals inhabitants inherited insects instance kind lancelet large number larger larvæ latter Lemuroidea Lepidoptera less likewise lower animals Lubbock males mammæ mammals manner Marsupials mental powers mind modified monkeys Monotremata moral moths muscles natural selection naturalists observed offspring organs Origin of Species ornaments Orthoptera pair period polygamous possess probably Proc produced Prof proportion Quadrumana races rasp remarks resemble respect rudimentary rudiments savages secondary sexual characters sexual selection skull social instincts stridulating structure surface sympathy tion transmitted tribe variability Variation of Animals various Vertebrates Wallace wings young Zoolog