in the human humerus; on muscles attached to the coccyx in man; on the
filum terminale in man; on the variability of the muscles; on abnormal
conditions of the human uterus; on the development of the mammary
glands; on male fishes hatching ova in their mouths; on the external
perpendicular fissure of the brain; on the bridging convolutions in the
brain of a chimpanzee.
Turnix, sexes of some species of.
Turtle-dove, cooing of the.
Tuttle, H., on the number of species of man.
Tylor, E.B., on emotional cries, gestures, etc., of man; on the origin
of the belief in spiritual agencies; remorse for violation of tribal
usage in marrying; on the primitive barbarism of civilised nations; on
the origin of counting; inventions of savages; on resemblances, of the
mental characters in different races of man.
Type of structure, prevalence of.
Typhaeus, stridulating organs of; stridulation of.
Twins, tendency to produce, hereditary.
Twite, proportion of the sexes in.
Ugliness, said to consist in an approach to the lower animals.
Umbrella-bird.
Umbrina, sounds produced by.
United States, rate of increase in; influence of natural selection on
the progress of; change undergone by Europeans in the.
Upupa epops, sounds produced by the male.
Uraniidae, coloration of the.
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