Females, presence of rudimentary male organs in; preference of, for certain males; pursuit of, by males; occurrence of secondary sexual characters in; development of male character by.
Females and males, comparative numbers of; comparative mortality of, while young.
Femur and tibia, proportions of, in the Aymara Indians.
Fenton, Mr., decrease of Maories; infanticide amongst the Maories.
Ferguson, Mr., on the courtship of fowls.
Fertilisation, phenomena of, in plants; in the lower animals.
Fertility lessened under changed conditions.
Fevers, immunity of Negroes and Mulattoes from.
Fiber zibethicus, protective colouring of it.
Fick, H., effect of conscription for military service.