INDEX 



687 



Trilobites, 575 



Trophallaxis, 339 



Tropisms, 6, 17, 192, 512 

 and behaviour, 195 



Tropism theory of animal beha- 

 viour, 108 



Tse-tse fly, 582 



True, the Beautiful and the Good, 

 The, 283, 319, 635 



Trypansomes, 583 



Two aspects theory, 229, 240, 247, 

 251 



Tyndall's "Matter," 17, 118 



Uexkull, von, 187 



Ugliness, 266 



Unconscious cerebration, 243 



Unfathomed universe (summary), 

 43 



Unicellulars, general organismal 

 activity among, 179 



Unicellular organic reaction, 179 



Uniformity of Nature, 24, 598 



Unit characters, 424 



Uniqueness of life, 145, (sum- 

 mary), 170 

 of organisms, 167 



Uranium, 357, 477 



Usher, Archbishop, 547 



Vaihinger, 261 

 Variability, 97, 99, 104 



definiteness in, 420 

 Variation, 357 



and modification, 100 

 Variations, discontinuous, 410, 412 



Mendelian, 453 



origin of, 415 



origin of heritable, 407 



single individual, value of, 



608 



Van't Hoff's Law, 113, 114 

 Varigny, de, 409 

 Velocities, 16 

 Venus' flower-basket, 275 

 Venus' fly-trap, 60 

 Vertebrates, origin of, 396 

 Verworn, 83 



Vestigial structures, 486 

 Vicarious functioning, 87 

 Visceral resonance, 268 

 Vision, habit of. 34 

 Vis modicatrix naturae, 631-652 

 Vital agency, is there a non-per- 

 ceptual, 153 



Vital agency, force, 149 



impulse, 144 



principle, 144 



Vitalism, descriptive or methodo- 

 logical, 159, 163 

 Vitalism, History and Theory of, 



441 

 Vitalism or mechanism, 144 



objections to, 155 



three grades of, 149 

 Voices of Nature, the three, 646 

 Voltaire, 597 



Vortex, living being as a, 95 

 Vries, de, 411, 413, 450, 453 



Wallace, A. R., 370, 371, 372, 379, 



385, 460, 462, 528, 587 

 Waller, Prof., 90 

 War among savages, 311 

 War, " Nature's sanction " for, 308 

 Ward, Prof. James, 38, 240, 244, 



254, 266, 484, 527, 528, 617 

 Washburn, Miss, 182, 214, 215 

 Wasps, instinct of, 202 



instinctive purposiveness in, 338 

 Wastefulness in Nature, 594 

 Watson, Prof. J. B , 125, 337, 534, 



538 



William, 651 

 Web of life, 59 

 Weber, Prof Max, 61 

 Weismann, 61, 417, 446, 480, 481, 



558 



Weldon, Prof., 444 

 Well-being, endeavour after, 304 

 Wheeler, 339 



Whelk, fgg-capsules of, 303 

 Whirlpool, living being as a, 



82 



White, Gilbert, 282 

 Whitman, 282, 536, 538, 539, 650 



Walt, 33 



Wild traits in tame animals, 486 

 Will, 156 



as guiding power, 245 

 to live, 53, 56 

 Winwarter, 420 

 Wonder, 28 

 Wonder of Life, 122 

 Woodruff, Prof. 54, 421 

 Woodward, Dr Smith, 549 

 Wordsworth, 28, 32, 268, 282 



Yucca flower and moth, 109, 199 

 Yung, Prof E., 198 



