304 SCIENCE AND THE HUMAN MIND 



Summa Philosophica contra Gentiles ', 



87. 



Survival of the fittest, 221. 

 Symbolism, 64. 

 Syndicalism, 279. 

 System of Nature ', 139. 

 Sy steme dii Monde, 161. 



Tabu, 257, 264. 



TAFEL, 195. 



TARTAGLIA, 109. 



Teleology, 221, 278. 



TENNYSON, ALFRED, LORD, 218, 



231. 



TERTULLIAN, 83. 

 Textual criticism, 61, 91. 

 THALES, 38. 

 Theology, 6, 34, 60, 80, 87, 93, 



145, 150, 231, 262. 

 Theory of the Earth t 202. 

 Thermodynamics, 179. 

 THOMAS AQUINAS, see Aquinas, 

 THOMPSON, ARCHBISHOP, 231. 

 THOMSON, SIR WM., see Kelvin, 



Lord. 

 Thot, 27. 

 Tigris, 25. 

 TITUS, 79. 

 TORRICELLI, 126. 

 TOSCANELLI, PAOLO, 108. 

 Totemism, 5. 

 Trigonometry, 56. 

 Trivium, 82. 

 TURGOT, 149. 

 Tutelary deities. 257, 264. 

 TYCHO BRAKE, 126. 

 TYLOR, E. B., 228. 

 TYNDALL, JOHN, 231. 



UBALDI, no. 

 Universals, 82, 88, 272. 

 Universities, 81, 82, 151, 161. 

 Uranium, properties of, 238. 

 Uranus, 161. 

 Urea, 195. 

 Utilitarianism, 261. 

 Utopia, 227. 



Vaccination, 198. 

 Venus, transit of, 192. 

 VESALIUS, ANDREAS, 133. 

 Vestiges of Creation, 208. 



Vesuvius, eruption of, 55. 



VIRCHOW, 216. 



VIRGIL, 86. 



Vis plastica, 202. 



Vitalism, 277. 



Vital principle, 136, 195. 



VOLTA, 181. 



VOLTAIRE, 19, 146. 



VON BAER, 190. 



VON HELMHOLTZ, 180, 196. 



VON HUMBOLDT, 137, 192. 



Vortex rings, 243. 



Vortices, theory of, 126. 



Voyage of the " Beagle," 193. 



of the "Challenger," 194. 



of the "Rattlesnake," 194. 

 Voyages of Wm. Dampier, 137. 



WALLACE, ALFRED R , 205, 208, 



212. 



Watchers of the night, 28. 

 Water, analysis of, 166. 

 WATERSTON, 170. 

 Wave theory of light, 173. 

 Waves, electric, 183. 

 Waves, electromagnetic, 241. 

 WEDGWOOD, JOSIAH, 209. 

 Weights, combining, 169. 

 Weights and measures, 21. 

 WEISMANN, 250. 

 WESLEY FAMILY, 144. 

 West Goths, 79. 

 Wheat, properties of, 248. 

 WHICHCOTE, BENJAMIN, 144. 

 WHITEHEAD, DR A. N., 258. 



WlLBERFORCE, BlSHOP SAMUEL, 

 214. 



WILLIAM OF CHAMPEAUX, 83. 

 WILLIAM OF OCCAM, 96. 

 WILSON, C. T. R., 241. 

 Wireless telegraphy, 185. 

 Witchcraft, 141. 

 Wittenberg, University of, 97. 

 WOHLER, FRIEDRICH, 195. 

 WOLFF, C. F., 190 

 WOODWARD, JAMES, 202. 



XENOPHANES, 33. 



Yeast, properties of, 197. 

 YOUNG, THOMAS, 173, 241. 



Zodiac, signs of, 23. 



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