THE WONDERS OF LIFE 



Silicon, 40. 



Skeletal theory of plasm, 133. 



Skeleton, common type of the, 



371- 

 the, 278,279, 283, 284. 



Sleep of flowers, 274. 



Smell, 303, 304. 



Snails, evolution of the, 179; 



muscles of the, 278. 

 Sociology, 467. 

 Soul, the, 315, 324; dualistic 



idea of the, 15, 16; found in 



all substance, 297; seat of 



the, 15-18. 

 Space, nature of, 70; sense of, 



311- 

 Spallanzani and spontaneous 



generation, 350. 



Spartan selection, 21, 119. 



Specialism, dangers of, 92, 



Species, nature of the, 204. 



Speech, 461. 



Sperm-plasm, 245. 



Spermatozoon, the, 245. move- 

 ment of the, 271, 272. 



Spinoza, system of, 82; mon- 

 ism of, 445. 



Spirilla, 202. 



Spiritism, 74, 75. 



Spiritualism, 451. 



Spontaneous generation, 348; 

 conflict over, 349, 350; older 

 belief in, 349. 



Sporangia., 244. 



Spores, 244. 



Sporozoa, 235. 



Sprouts, 36, 148, 151, 154, 165, 



183- 

 State and the individual, the, 



409. 



States, modem, defects of, 

 409, 410. 



Stationary life in animals, 275. 



Stauraxoni a , 175. 



Stimuli, acoustic, 311; action of, 

 295; chemical, 301-309: con- 

 duction of, 295, 296; electric, 

 312,313; gravitational, 309- 

 312; optic, 297-300; thermic, 

 299-302, 



Stock, the, 168, 184. 

 Strauss, D. F., 72, 

 Strophogenesis, 254. 

 Substance, attributes of, 446, 



448; eternity, of, 97; the 



problem of, 2. 

 Suicide, contradictory views of, 



112; occasional justice of, 



112, 113, 1 16. 

 Sun-dew, action of the, 304. 

 Supernatural, the, 87, 88. 

 vSuperstition, 56. 

 Sutherland, A., on morality, 



392. 

 Swimming-bladder, the, 231. 

 Symbiosis, 238. 

 Symmetry, 171, 172. 

 Sympathy, 115. 



Tailor theory, the, 383. 



Tape- worms, 237. 



Taste, 302, 303. 



Technical science, progress of, 



465. 



Tectology, 94. 



Teleology, 181, 366. 



Teleology in movement, 265. 



Teleology, mechanical, 362, 

 363. 



Temperature, perception of, 

 299—301. 



Thallophyta, 161, 165. 



Thallus, the, 165, 195. 



Theology, 468. 



Thermotaxis, 301. 



Thigmotaxis, 310. 



Thought as attribute of sub- 

 stance, 445. 



Thought centres, 13, 329. 



Time, nature of, 70. 



Tissue animals, 163 ; plants, 162. 



Tissues, primary and secondary, 

 161, 162. 



Tocogony, 240. 



Touch, sense of, 309; in plants, 



309. 3TO- 

 Tracheata, the, 231. 



Tradition, power of, 423. 



Transgressive growth, 42,44, 



240, 241. 



484 



