The Descent of Man, Volume 1

acquired action adult allied American anthropomorphous apes appear baboon beautiful become beetles believe birds birth body brain breed Brehm butterflies Catarrhine cause chimpanzee civilized classes closely color crustaceans degree developed differ distinct species doubt elytra existence extremely fact faculties feel females Fritz Muller genus given greater number habits hair higher highly horns individuals inhabitants inherited insects instance islands kind larvæ latter Lemuroidea Lepidoptera less likewise lower animals males mammæ mammals manner Marsupials mental powers modified monkeys Monotremata moral moths muscles natural selection naturalists observed offspring organs Origin of Species Orthoptera period Plants under Domestication polygamous possess present probably Proc Prof proportion Quadrumana races rasp remarks resemble respect rudimentary rudiments savages secondary sexual characters seems sexes sexual selection skull social instincts stridulating structure sulci surface sympathy tion transmitted tribe variable Variation of Animals various Vertebrates Wallace wings young Zoolog