INDEX OF SUBJECTS 



403 



Sense organs, 213, 251 



Sense-perception, 199, 203, 214, 

 219, 220, 227, 231, 235; a brain 

 function 199; a psycho-organic 

 function, 214; concerned with 

 factual reality of existence, 219; 

 involves a decomposition of 

 neural tissue, 227; not independ- 

 ent of body, 227; organic func- 

 tion, 203 



Sensibility, organic, 244, 245 



Sensori-motor, 251 



Sensory functions of the nervous 

 system, 199 



Sensual appetites, exhaustible, 232 



Sensual emotion, organic function, 

 203 



Sequence, 100, 107, 108; inverted 

 or "wrong," 107, 108; no invari- 

 able order of, 100; of fossilifer- 

 ous strata, 100; "wrong," 107, 

 107 note 



Serum 15 



Sexual (gametic) incompatibility, 

 4. 5, 19, 20, 21 



Sharks, 80, 119, 296 



"Shell-craters," 347 



Shoots, 160 



Sight, 217; intrinsic dependence on 

 eye, 217; extrinsic dependence 

 on object, 217 



Silurian, 92, 106, 111, 118; Middle, 

 92, 106 



Simia satyrus, 32 



Simple explanations not neces- 

 sarily true, 350 



Siwalik beds, 95, 310 



Skeleton, 60, 61, 331; human, 331. 



Skulls, 328, 329, 331, 333, 340, 341; 

 fossil, 33, 341; human, 331 



Skull cap, 271, 313, 314, 324, 

 328 



Sleep, would interrupt process of 

 relaying consciousness f'r o m 

 thought to thought, 212, 213. 



Sloth, 52 



Snapdragon, 88 



Social inequalities, artificial laws 

 for benefit of rich, 361 



Socialism, 357, 360; Marxian, 357; 

 Scientific, 357 



Sodium, 165, 166; bromide, 165; 

 chloride, 165, 166; iodide, 165 



Solemn burial, 331, 332, 343; most 

 ancient instances, 332 



Solutreans, 333 



Soma, 13, 59, 303 



Somatella, 59 



Somatic cells, 13 14, 17, 136, 156, 

 163 



Somites, 280 



Sophism, Comte's like that of 

 Zeno, 226 



Soul, 172, 179, 193, 194, 197, 198, 

 200, 201, 202, 203, 205, 206, 209, 

 210, 211, 216, 268, 311, 350, 361; 

 definition of, 200; a "formative 

 power" and "integrating" and 

 unifying principle, 200, 211; a 

 vital entelechy, 210; as revealed 

 in biology and psychology, 205; 

 consubstantial with matter, 202; 

 differs in kind, not merely in de- 

 gree from bestial soul, 194; dis- 

 carded by Descartes, 197; dis- 

 carded by scientific psychology, 

 359; formal principle of life, 203; 

 functional, 203, 206, 209— cannot 

 be primary principle of life, 206; 

 name, not reality of, rejected, 

 200; not a complete entity, 201; 

 primary ground of life, 206; re- 

 jected in dynamic, not in enti- 

 tive sense, 200, 201 ; spiritual, not 

 a product of evolution, 193, 216, 

 268 — originates by a creative 

 act, 193, 268; subject of psy- 

 chology, 197; subsistent in man, 

 202; substantial, 203, 209; term 

 alleged to be meaningless, 200 



Specialism, advantages and disad- 

 vantages of, 189 



Species, 3, 4, 5, 6, 17, 19, 26, 37, 38, 

 74, 75, 78, 80, 83, 84, 86, 87, 110, 

 111, 112, 119, 120-123, 131, 157, 

 ^56, 257, 312, 313, 320, 334, 342; 

 definition of, 4; change of, 4, 

 6; differentiation and multipli- 

 cation of, 131 ; difficulity of dis- 

 tinguishing, 120-123; elementary, 

 17; extinct and extant, 120- 

 123, 334; extinct, precarious ba- 

 sis for time-scale, 334; formation 

 as contrasted with transforma- 

 tion of, 74, 75, 131; fossil, 3, 4, 

 83, 92, 120, 122, 312, 313; inter- 



