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.