Adami, Professor. “Medical Contributions to the Study of Evolution,” 21.
Ancestry, primate, 235, 236.
Anthropology, 4.
Ape: Arrangement of hair on forearm of, 43.
——Papillary ridges on hand and foot of, 164.
——Bursæ of, 184–186.
——Muscles of, 213, 214.
Artists, Evidence from, 66.
Ass: Hair-patterns of, 82.

Baboon, Chacma, papillary ridges on hand and foot of, 165, 166.
Bartholinus, Erasmus, 126.
Bateson, Professor, 9, 20, 22, 33, 149, 255.
——“Materials for the Study of Variation,” 9–13, 22, 210.
Bayliss, Professor, 244.
Bear, Parti-coloured (Æluropus melanoleucus): Hair-patterns of, 121, 122.
Beddard, Mr., 118.
——“Animal Colouration67,” 206.
Bell, Sir Charles, 205.
Bergson, 205.
Bongo (Tragelaphus euryceros): Hair-patterns of, 118.
Bonney, Professor. “The Story of Our Planet,” 3.
Bower, Professor, 21.
Brooks, Professor, W. K., 20, 202.
Bursæ, description of, 179, 180.
——Human, enumerated, 180–183.
——Experiments as to, 186–190.

Canidæ: Hair-patterns of, 98–102.
Capybara, epidermis of, 151.
Chimpanzee, papillary ridges on hand and foot of, 164, 167, 168, 176.
——Bursæ of, 184, 185.
Clark, Sir Andrew, 30.
Cold and warmth sensations of human skin, 220–230.
Coote, Captain, 194.
Correlation, 28.
Correns, 11.
Cow, hair and habits of, 87–91.
——Fly-shaker muscles of, 90, 211, 212.
Crime, detection of a, 5.
Cunningham, J. T., 21.

Darwin, 1, 2, 15, 35, 39, 40, 139, 145, 147, 239.
——“Origin of Species,” 2, 8.
——“Descent of Man,” 2.
——Three Blows to, 9.
——On human eyebrows, 64, 65.
Darwin, Sir Francis, 20, 21.
——On Mnemonic theory of Heredity, 20.
Darwinism, 9, 15, 25, 145.
Dendy, Professor. “Outlines of Evolutionary Biology,” 21.
de Vries, 11, 24, 27, 145, 190.
Dog: Arrangement of hair of, 27, 28, 34, 100–102.
——Habits of, 98, 99.
Dyer, Professor Thiselton, 210.

Earth Wolf, epidermis of, 150.
Echidna, epidermis of, 151.
Elliott, Professor Scott, 98, 126.
——“Prehistoric Man and his Story,” 43, 47, 226.
Environments, Discontinuous, 31–33.
Epidermis: Varieties of, found in mammals, 145.
——Stimuli and response, 145–153.
Eyebrows, hairs of human, 64–73.
——Interpreted by wrinkles, 67.

Facilitation, 240, 246–248.
Felidæ: Hair-patterns of, 92–97.
——Snout of, 94.
Flexures of hand and foot, description of, 170–172.
——Chief types of, 172.
——Meaning of, 173–177.
Foot of Man, 155, 156.
——Papillary ridges on, 159, 160.
——Flexures of, 176, 177.
Foot of Man, Plantar arch of, 192–194.
——Muscles of, 214–217.
Forearm, arrangement of hair on, 41.

Galton, 157; On chiromantic creases, 170.
Galvani, 126.
Geikie, Sir Archibald, 3.
Genealogy, 4.
Germinal Selection, 19, 20.
Gibbon, flexures of foot of, 176.
——Bursæ of, 185.
Gibbon, Hainan, papillary ridges on hand and foot of, 164, 165.
Giraffe: Habits of, 115.
——Hair-patterns of, 117.
Gorilla, papillary ridges on hand and foot of, 164.

Haeckel: Pithecoid Ancestors of Man, 1.
Hair-direction, causation of, 140–144.
——Summary of conclusions with regard to, 141.
——Phenomena of, 37, 38.
——Experimental Inquiry into, 125, 126.
——Steps of Inquiry into, 40, 124, 125.
Hair-pattern, Dynamics of, 44, 45, 46, 50.
Hand of Man, 155, 156.
——Papillary ridges on, 157–159.
——Flexures of, 176, 177.
——Muscles of, 214–217.
Harris, Dr. H. Wilder, 147, 154.
Harris, Mrs. Wilder. See Whipple, Miss Inez.
Hartmann, 213.
Hedgehog, epidermis of, 152.
——Papillary ridges on hand and foot of, 162, 163, 166.
——Flexures on hand and foot of, 173.
Hepburn, Dr., 148, 159, 162.
Heredity, Mnemonic theory of, 20.
Herschel, Sir John, 126.
Hill, Professor Leonard, 224.
Historian a biologist, 2.
Horse: Arrangement of hair on side of neck of, 51–63.
——Habits of, 75.
——Hair-patterns of, 75–82.
——Compared with Zebra, 83–85.
——Effect of harness upon hair of, 126–136.
——Fly-shaker muscles of, 211.
Howes, G. B., 12.
Hutchinson, Professor Jonathan, 188.
Hutton, 3.
Huxley, 5, 8, 126, 192, 200, 217.

Insectivores, 237, 238.

Jackson, Hughlings, 241.
Jevons, 124, 125, 126, 140.
Johnston, Sir H. H., 96, 201.
Jones, Professor Wood, 230.
——“Arboreal Man,” 195, 245, 248.

Kammerer, 21.
Keith, Professor, 112, 188, 189, 190, 195, 196, 208, 215, 216, 217.
——On functions of platysma, 113.
Kerr, Professor Graham, 224.
——On Embryology, 246, 247.
Kiang (Thibetan Wild Ass): Hair-patterns of, 119.
Kinkajou, epidermis of, 153.
Kropotkin, Prince, 21.

Lamarck, 13, 21, 22, 33, 35, 145, 147, 247, 255.
Lamarckian hypothesis of organic evolution, 19, 20, 22, 24, 25, 26, 28, 30, 31, 138, 205.
Lankester, Sir E. Ray, 20, 23, 45, 141, 190, 204.
Lemur: Arrangement of hair on forearm of, 43.
——Hair-pattern of, 46.
——Papillary ridges on foot of, 161, 162, 164, 165.
——Black-headed, epidermis of, 153.
——Ring-tailed, epidermis of, 153.
——Flexures of foot of, 176.
Lion: Hair-patterns of, 92–97, 207.
Livingstone, 92.
Llama: Hair-patterns of, 119, 120.
Loris, Slow: epidermis of, 154, 155.
——Papillary ridges on foot of, 161, 166.
Lydekker, 86, 92, 94, 115, 118, 119, 168, 195.
Lyell, 3, 178, 192.
——“Principles of Geology,” 3, 46.

Macacus, flexures of hand and foot of, 176.
Macalister, 215, 217.
McBride, Professor, 21.
Macdonald, Professor, 190, 244, 245, 247.
McDougall, Professor: On Physiological Psychology, 24, 25, 225, 253.
MacEwen, Sir W., 188.
McTaggart, Dr., 142.
Malthus, 2, 15.
Malus, 126.
Mammals, palms and soles of, 150–153.
Man: hair and habits of, 103.
——Arrangement of hair on back of, 104.
——Passive habits of, 106, 107.
——Arrangement of hair on chest of, 108, 109.
——Palm and sole of, 155, 156.
——Papillary ridges on hand of, 157–159.
——Papillary ridges on foot of, 159, 160.
——Flexures of palm and sole of, 176, 177.
——Plantar arch of, 192–194.
——Muscles of hand and foot of, 214–217.
——Changes in habits of, 234, 235.
Marmoset, Papillary ridges on foot of, 161.
Mendel, 11, 15, 26, 145, 190.
Mercier, Dr.: On Causation, 141, 142.
Mill, John Stuart, 141, 142.
Mole, epidermis of, 150.
Monkey, papillary ridges on hand and foot of, 164.
Mule: Hair-patterns of, 82.
Murphy, Dr. John B., 189.
Muscles: Anatomists’ views of, 201, 202.
——Initiative in, 202, 203.
——New, 205.
——Unstriped, 205, 206.
——Facial, of expression, 207–209.
——Fly-shaker, 210–212.
——Skeletal, 212, 213.
——Skeletal, of Primates, 213, 214.

Neural phenomena, 239.
Nervous System: Some aspects of the, 223–225.
——Place of the, in Evolution, 238, 239.
——Raw materials of the, 240, 241.
——Integration of raw materials of the, 241, 242.

Oken, 126.
Ollier, 188.
Onager, Hair-patterns of, 82.
Opossum, American, epidermis of, 151.
——Azara’s, epidermis of, 153.
Orang, papillary ridges on hand and foot of, 164.
——Bursæ of, 185.
Organic Evolution, consideration of problems of, 24–28.
——Factors in, 27.
——Cross-roads in, 203–205.
Owen, Richard, 10.
Oxen: Hair-patterns of, 87–91.

Palm, skin of, 147–156.
——of Man, 155–156.
Papillary ridges, some undersigned experiments in, 166–169.
Paterson, Dr. C., 188.
Pearson, Professor Karl, 34, 141, 142.
Phalanger, epidermis of, 152.
Pitt, Miss Frances, 94, 95, 251.
Plantar arch, of man, 192–194.
——How it was built, 194, 195.
——Equipment of, 196, 197.
——Description of, 197–199.
Plasto-diēthēsis, 34, 145, 195.
Platysma, Struggles of the, 111–114.
Playfair, 3.
Pocock, Roger, 75.
Poincaré, Henri, 157.
——Principles of method, 36.
Porcupine, Canadian Tree, epidermis of, 151, 153.
Poulton, Professor: “Essays on Evolution,” 86.
Prescott’s “Conquest of Peru,” 120.
Pressure, Examples of the effects of, upon hair-direction, 127–136.
Primates, epidermis of, 153.

Rabbit, epidermis of, 151.
Records, Interpretation of, 110.
Reflex arches, formation of, 231.
——Some historical illustrations of, 231–234.
——Of Insects, 236, 237.
——Of Mollusca, 236, 237.
——Of Birds, 236, 237.
——Evidence of production of new, 242–246.
Reflexes: Stimuli of, 249–256.
——Scratch, of the dog, 249.
——Purposes of, 250–253.
——Scratch, of the cat, 253.
Rivers, Sources of, 4.
Romanes: 19, 39, 40, 145.
——On Weismann, 17, 18.
Roux, 19, 145.
Russell, The Hon. Bertrand, 142.
Russell, E. S. On Lamarck’s theory, 20.

Saint-Hilaire, Geoffrey, 10.
Sapajou, Brown, papillary ridges on hand and foot of, 165.
Schafer’s “Text Book of Physiology,” 219, 220, 226.
Scratch reflex; of the dog, 249.
——Of the cat, 253.
Selous, 92, 115, 118.
Sherrington, Professor, 218, 226, 229, 238, 244, 245, 249, 250, 251, 253, 254.
Skin, Human: Distribution of Touch Corpuscles, 219.
——Distribution of Touch Spots, 219.
——Distribution of Cold and Warmth Sensations, 220.
——Distribution of Cold and Warmth Spots, 220, 221.
——Stimuli of pressure, 222, 226–230.
——Stimuli of cold, 226–230.
——Stimuli of pain, 226–230.
——Stimuli of warmth, 226–230.
Sloth, Two-toed (Cholæpus didactylus): Hair-patterns of, 122, 123.
Smith, Dr. E. Barclay, 201, 216.
Sole, skin of, 147–156.
——Of Man, 155, 156.
Spencer, Herbert, 28, 177.
Squirrel, epidermis of, 152.
——Papillary ridges on hand and foot of, 162, 166.
——Flexures of hand and foot of, 175.
Squirrel-monkey, papillary ridges on foot of, 161.
——Flexures of foot of, 176.
Starling, Professor, 227, 244.
——On Facilitation, 240, 246.
Still-born children, subcutaneous bursæ of two, 183, 184.
Stimuli, 30, 31.
——Of touch, 219, 226–230.
——Of cold, 220, 226–230.
——Of warmth, 220, 226–230.
——Of pressure, 222, 226–230.
Stout, Professor, 252.
Summary of conclusions arrived at, 257, 258.

Thomson, Professor J. Arthur, 20, 22, 23, 24, 25, 28, 29, 34.
——On Heredity, 22.
Touch Corpuscles, 219, 227, 228.
Touch spots, 219, 225, 227, 228.
Tschermak, 11.

Ungulates, even-toed, 86–91.
——odd-toed, 74–85.

Vernon, Dr.: “Variations in Animals and Plants,” 28.
Vulpine phalanger, flexures of foot of, 173, 175.

Wallace, Professor, 2, 39, 40, 46, 145.
Weber’s Law, 222.
Weismann, 9, 11, 14, 16, 17, 18, 21, 22, 24, 25, 26, 86, 139, 177, 210, 245, 255.
——Twelve points, 15, 16.
Weismannism, 17, 18, 19, 26, 145.
Welton, Mr., 142.
Whipple, Miss Inez (Mrs. Wilder Harris), 154, 162.
——Criticism of “The Direction of Hair in Animals and Man,” 137–139.
Wolff, 189: “Law of Bone Transformation,” 205.

Young, Arthur, 143.

Zebra: Comparisons between horse and, 83, 84.