kers, 90.
Hood of cobra, 50.
Hook-billed ducks, 100.
Hooker, Dr., 150.
Horned flies, 93.
Horny plates, 40, 42.
Horny stomach, 83.
Human larynx, 54, 278.
Humphry, Professor, 163.
Hutton, Mr. R. Holt, 202, 203.
Huxley, Professor, 67-69, 71, 72, 95, 103, 109, 130, 131, 137, 141, 163,
172, 173, 231, 247, 273.
Hybrids, mortality of, 124.
Hydrocyonina, 146.
Hyperphysical action, 253.
Hyrax, 179.

I.
Ichthyopsida, 109.
Ichthyosaurus, 78, 106, 132, 177.
Ichthyosis, 183.
Iguanodon, 71.
Illegitimate symbolic conceptions, 251.
Illustration by clock-thinking, 249.
Imaginal disks, 46, 170.
Implacental mammals, 67, 68.
Independent origins, 152.
Indian butterfly, 30.
Indian region's butterflies, 83.
Indians and cholera, 192.
Individual, meaning of word, 2.
Infirm, care of, 192.
Influence, local, 83.
Insect, walking-leaf, 35.
Insects, walking-stick and bamboo, 33.
Insectivora, 68.
Insectivorous mammals, 148.
Insectivorous teeth, 68.
Instinct of bull-dog, 260.
Intermediate forms, 128.
Intuitions, primary, 251.
Irregularities in blood-vessels, 182.
Isaria felina, 115.
[Page 293]

J.
Japanned Peacock, 100.
Jews, 212.
Joints of backbone, 157, 162.
Jugular fishes, 39, 141.
Julia Pastrana, 174.

K.
Kallima inachis, 31.
Kallima paralekta, 31.
Kangaroo, 42, 67.
Kowalewsky, 81.
Knee and elbow affections, 183.
Koelliker, Professor, 104.

L.
Labyrinthici, 146.
Labyrinthodon, 104, 134.
Lamarck, 3.
Lankester, Mr. Ray, 152, 158.
Larynx of kangaroo, 42.
Larynx of man, 54, 278.
Lateral homology, 164.
Laws of correlation, 173.
Leaf butterfly, 31.
Legitimate symbolic conceptions, 251.
Lens, 76.
Lepidosteus, 172.
Lepra, 183.
Lewes, Mr. G. H., 94, 212, 214, 216.
Lewis, St., 206.
Lewis XV., 206.
Lewis XVI., 206.
Limb genesis, 176.
Limb muscles, 180.
Limbs, fixity of position of, 39.
Limbs of lobster, 161.
Links, supposed connecting, 107.
Lions, breeding, 234.
Lions, diseased pelvis, 182.
Llama, 109.
Local influences, 83.
Lobster, 160.
Long-tailed bird of Paradise, 91.
Lubbock, Sir John, 193, 204.
Lyell Sir, Charles, on dogs, 99, 106.

M.
Machairodus, 110.
Macrauchenia, 109.
Macropodidae, 69.
Macroscelides, 68.
Madagascar, 148, 152.
Magnificent Bird of