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

acquired adult American anthropomorphous apes appear B. A. Gould baboon beautiful become beetles believe birds births body brain breeds Brehm butterflies Catarrhine cause chimpanzee civilized classes closely color crustaceans degree developed doubt elytra existence extremely fact faculties feel Fritz Müller genus given greater number habits hair higher highly Hist horns individuals inhabitants inherited insects instance islands kind large number larger larvæ latter Lemuroidea Lepidoptera less likewise lower animals males mammæ mammals mankind manner Marsupials mental powers monkeys Monotremata moral moths Müller muscles natural selection naturalist observed occur offspring organs Orthoptera pair pangenesis period polygamous possess present probably Proc Prof proportion Quadrumana races rasp remarks resemble respect rudimentary rudiments savages secondary sexual characters seems seen sexes sexual selection skull social instincts stridulating structure sulci surface tion transmitted tribe variable Variation of Animals various Vertebrates Wallace wings young Zoolog