G. GALTON, Mr. Francis, referred to, 40-48, 100, 103, 134-139, 145, 146, 152, 154, 156, 300, 303-305; quoted, 46, 100. Gangrene, effects of, 54, 105. _Gardener's Chronicle_, quoted, 127. GÄRTNER, Dr., referred to, 206. GEDDES, Prof., referred to, 15, 20,174. Gemmules, 47, 145, 155. Genera and species, 261. Germ-plasm and Stirp, 40; and pangenesis, 42; isolation of, 137; stability of, 243. _Germ-plasm_, referred to, 128. GIARD, Prof., referred to, 14, 174. Giraffe, co-adaptation in, 64. GOLTZ, Prof., referred to, 80, 84. GOULD, Mr., referred to, 210. Graft-hybridization, 143. Growth, laws of, 222, 226, 248, 270, 321. Guinea-pigs, epilepsy of, 104. GULICK, Mr., referred to, 174, 259, 260, 271; quoted, 224, 273. _Gute und schlechte Arten_, quoted, 203. H. Habit, hereditary, 87. _Habit and Intelligence_, quoted, 225. Hand, of man, 24. _Handbook of British Flora_, referred to, 252. HAYCRAFT, Prof., referred to, 80. HEAPE, Mr. Walter, referred to, 147. HENSLOW, Prof. George, referred to, 18-20, 127-132, 174, 208; quoted, 19, 130, 131. Heredity, problems of, 39. HERING, Prof., referred to, 87. HEWITT, Mr., referred to, 187. HILL, Prof. Leonard, quoted, 132. HAECKEL, Prof., referred to, 174, 260, 282. HOFFMANN, Dr., referred to, 123, 280. Horse, callosities of, 265. HUXLEY, Prof. T. H., referred to, 167-170, 185, 256, 275, 283, 307-312; quoted, 307-309. Huxleyan doctrine of species, 167. _Hyatt_, Prof., referred to, 14, 15. Hymenoptera, social, 92. I. _Inadequacy of Natural Selection_, referred to, 65, 95. _Inconsistencies of Utilitarianism as the Exclusive Theory of Organic Evolution_, quoted, 273. Indifferent characters, 171, 185, 208, 247. Insects, instincts of, 91. Instability of useless characters, 186. Instinct and hereditary habit, 87; of Sphex, 88; of carnivora, 89; of man, 89; Prof. Weismann's views on, 90; of insects, 91. Intercrossing, 67-71. Isolation, 223 _et seq._ J. JORDAN, Dr., referred to, 206, 252. K. Karyokinesis, 140. KERNER, Prof., referred to, 174, 202-206, 231, 239, 260, 282; quoted, 203. KOCH, Dr., referred to, 217. KÖLLIKER, Prof., referred to, 174. L. Lamarck, referred to, 9-15. Lamarckism, 9, 61, 113. LANDOR, A. H. Savage, referred to, 26. Language and Weismannism, 334. LANKESTER, Prof. Ray, quoted, 245, 299; referred to, 305. LESAGE, M., referred to, 126. _Life and Letters of Charles Darwin_, quoted, 319, 320; referred to, 11. LUCIANI, referred to, 109. M. _Making of Flowers_, referred to, 19. _Manual of British Botany_, referred to, 252. _Manual of Dental Anatomy_, figure from, 267. Marsupials, diagnostic characters of, 178. _Materials for the Study of Variation_, referred to, 36. MEEHAN, Mr., referred to, 201. MELDOLA, Prof., referred to, 68. _Mental Evolution in Animals_, referred to, 25, 88, 89, 92. _Mental Evolution in Man_, referred to, 31. MERRIFIELD, Mr., referred to, 211. Mice, mutilation of tails of, 148.