Methods, scientific, 38. Migration favors diversification, 77. Mind, relation of, to brain, 327, 338; _versus_ mechanics in Nature, 340. Miracles, question of, 356. Mollusks, age of, 16. Monotremes, 201. Mystery, changes in our sense of, 347. Nature, relation of God to, 297; immanence of God in, 300; relation of man to, 304; has no meaning without spirit, 329; mind _versus_ mechanics in, 340. Natural and supernatural, 355. Neo-Darwinism, 93; relation of, to human progress, 97. Newton compared with Darwin, 48. Nominalism and realism reconciled, 329. Obstacle to evolution removed, 35. Oceanic island life, 213. Ontogenic series, 9, 40. Organic forms, views of origin of, 29, 68, 72, 292; law of continuity applied to, 56. Organs, incipient, 270. Origin of varieties unexplained, 270. Pantheism, true and false, 302, 335. Paroxysmal evolution, 257. Personality behind Nature, 338. Personality of God, 337, 341. Philosophy and life, relations of, 277. Phylogenic series, 10, 41. Planorbis of Steinheim, 254. Primal animals, 145. Progress of the whole, law of, 13, 22. Progressive change in evolution, 9. Providence, question of general and special, 355. Ranges of organic forms, 186. Realism and nominalism reconciled, 329. Record, geological, imperfection of, 252. Religion, so-called conflict of, with evolution, 45, 280. Religious thought to be reconstructed, 295. Reproduction, methods of, 237. Reptiles, age of, 17. Revelation, relation of evolution to, 331; not inconsistent with the laws of Nature, 332; nature of, 333. Reversion of artificial forms, 229. Romanes, G. J., his idea of physiological selection, 76, 84; the idea applied, 245. Rudimentary organs, proofs of evolution from, 179; organs in man, 181. Selection, sexual, 74, 85; natural, 74, 79, 83; physiological, 75, 79, 84; natural, compared with artificial, 225; physiological, applied, 245. Self-consciousness the sign of spirit-individuality, 325. Sequoia, 219, 220. Sexes, characters of, compared, 262. Shrimp, external anatomy of, 134. Sin a condition of moral evolution, 350. Skeleton, vertebrate, homologies of, 111; articulate, homologies of, 132; articulate, general structure of, 134. Society, progress of, 25. Space and time the two fundamental conditions of material existence, 48. Species, natural, more permanent than artificial varieties, 229; more distinct, 232; cross-sterile, 232. Spirit embryonic in animals, 311; of man related to _anima_ of animals, 313; to forces of Nature, 313, 316; origin of illustrated, 320-322; Plato’s view, 326; orthodox view, 326; no meaning in Nature without, 329. Steinheim, Planorbis of, 254. Supernatural and the natural, 355. Taxonomic series, 9, 40. Temperature-regions, 184.