Selection, theory of, 79. Self-consciousness, 171. Sense-knowledge, 297. organs, 293. Senses, philosophy of the, 295. Sentiment, 17, etc., 331. Siebold, 27. Simiæ, 34. Social duties, 351. instincts, 350. Solar systems, 241, 369. Solarism, 280. Soul, 88 _et seqq._ apparatus of the, 162. blending of the, 141. creation of the, 135. division of the, 135. etheric, 199. gaseous, 199. histionic, 157. history of the, 167. hydra, 161. life of the, 90. liquid, 200. mammal, 167. nerve, 162. origin of the, 135. of the plant, 157. personal, 162. solid, 201. substance of the, 198. transmigration of the, 135. Sources of knowledge, 293. Space and time, 244. infinity of, 242. reality of, 244. Species, 73. Spectral analysis, 241. Spermarium, 63. Spermatozoa, 58. Spinal cord, 165. Spinoza, 21, 215, 290. Spirit world, 221. Spirit-rapping, 305. Spiritism, 304. Spiritualism, 20. Sponge, soul of the, 161. Stem-cell, 63, 138, 151. Stimulated movement, 113, 116. Stimuli, conduction of, 158. Strauss (David), 309, 313. Struggle for life, 270. Substance, 215. law of, 211, etc. structure of, 229. Superstition, 301. Süss (Edward), 250. Syllabus, 323. Synodikon (of Pappus), 312. Table-turning, 305. Teleological explanation, 259. Teleology, 258. Tetrapoda, 29. Thanatism, 189. primary, 192. secondary, 192. Theism, 276. Theocracy, 9. Theory, 299. Thought, organs of, 126, 183, 293. Time and space, 244. reality of, 246. Tissue, theory of, 26. Tissue-forming animals, 157. plants, 156. Transformism, 76. Trimurti, 278. Trinity, dogma of the, 277. monistic, 336. Triplotheism, 277. Tropesis, 225. Tropismata, 128. Tunicata, 165. Turbellaria, 161. Ultramontanism, 310. Understanding, 125. Unity of natural forces, 231. of substance, 214. Universum perpetuum mobile, 245. Uterus, 34. Vaticanism, 314. Vertebrates, 27, _passim_. Verworn (Max), 48, 116. Vesalius, 24. Vibration, theory of, 216. Virchow, 26, 50. Virchow's metamorphosis, 93. Vital force, 42, 262. Vitalism, 43, 262. Vivisection, 41. Vogt (Carl), 93. Vogt (J.E.), 218. Water-color drawing, 364. Weismann, 190. Will, liberty of the, 129. scale of the, 128. Wolff (C.F.), 56. Woman and Christianity, 358. World-consciousness, 171. World-riddles, number of, 15. Wundt (Wilhelm), 100, 171. THE END Transcriber's notes: The following is a list of changes made to the original. The first line is the original line, the second the corrected one. (12) Consequently, the so-called history of the world" (12) Consequently, the so-called "history of the world" structure of the primates forces us to distingiush two structure of the primates forces us to distinguish two