---- Sir Francis, and "Life and Letters of Charles Darwin," i. 118, 119, 120, 122 ---- Sir G., Expulsion theory of, ii. 180 ----, Mr. Horace, letter from his father, on discoverers, ii. 242 (note) ---- Major Leonard, i. 145, 146 ---- Dr. Robert Waring, i. 6, 18 "Darwinism," Wallace's, i, 212, 218, ii. 2, 14, 15, 75, 90, 109; plan of, 15-17; Spencer's objection to title, 47 Davos, Wallace's lecture at, ii. 204 Dawson, Sir J.W., attack on Natural Selection, i. 142 De Rougemont, Wallace on, ii. 76 De Vries on mutation, ii. 80, 96 Decaisne's paper on flora of Timor, i. 236 Deformities, article on, in Chambers's Encyclopedia, ii. 57 Dendrobium devonianum, i. 23 Denudation, theory of, i. 250, 309, ii. 71, 72, 73 Deposition, theory of, i. 309, ii. 72, 73 "Descent of Man," Darwin's, i. 152, 255, 259, 284, 289 (note), ii. 2, 34; review in _Pall Mall Gazette_, i. 263; in _Spectator_, 263 "Development of Human Races under Law of Natural Selection," Wallace's, ii. 6, 183 "Different Forms of Flowers and Plants of the Same Species," Darwin's, i. 298, ii. 2 Dimorphism, i. 167, 202, 220 Dipsomania, Wallace on, ii. 68 Discontinuous variation, ii. 62, 63 Disuse, physiological effects of, i. 69 Divining rod, experiments with, ii. 205, 206-8, 211 Dixey, Dr., ii. 79 Domestic selection (_see_ Selection, domestic) Domestication, variation under, i. 192 Dowsing for water, etc., ii. 205, 206-8, 211 Dunraven, Lord, and psychical research, ii. 199 "Duration of Life," Weismann's, ii. 44, 45 Dyaks, i. 55, 59 E Earl, W., on distribution of animals in Malay Archipelago, i. 138 "Early History of Mankind," Tylor's, i. 164, 165 Earth, formation of, ii. 179; Wallace's views on, 168 _et seq._ "Earthworms," Darwin's, i. 320, ii. 2 Edinburgh, Darwin in, i. 16, 17 Education, Wallace's views of, ii. 147 Edwards, W.H., "Voyage up the Amazon," i. 25 Eight hours' day, Wallace on, ii. 156 "Encyclopedia of Plants," London's, i. 21, 23, 92 Entomological Society, i. 35; discussion on mimicry at, 176; Wallace's Presidential Address to, 126 Eocene Period, i. 308, 312 Epping Forest, superintendency of, Wallace and, i. 302-4, 306 Erotylidae, i. 65 Erskine of Linlathen on evolution, ii. 228 "Essays on Evolution," Poulton's, ii. 61 (note), 79 (note), 84, 85 "---- upon Heredity," Weismann's, ii. 45, 51, 52 Eugenics, ii. 160, 246; term disliked by Wallace, 150, 246; and segregation of unfit, letter from Wallace on, 160 Evans, Miss, ii. 226 Evil, origin of, ii. 149 Evolution, theory of, Lamarck and, i. 1, 109; Lyell and, 76, 142, 239; as conceived in "Vestiges of Creation," 91, 92 (note) _et seq._; Darwin and, 103 _et seq._, 122-4; notable converts to, 137, 139, 141, 219, 221, 239; Wallace's views on, 240, 256, 294, ii. 78, 94, 95; Sir W.T. Thiselton-Dyer on, 97, 185. (_See also_ Selection) "---- and Adaptation," Morgan's, ii. 79 ---- and Mendelism, Wallace on, ii. 93