406 



Index 



isms, i, 83; of corresponding 

 proteins, 95; of protoplasms, 

 143; of sperm of anthropoids 

 and man, ii, 2; of animal be- 

 havior, 276; of psychical and 

 reactive life, 281 



Speculations, i, 293 



Spermatozoa, species differences 

 in, i, 216; structure of tail of, 

 333; structure of head of, 342, 

 and ii, 87; two kinds of, i, 347; 

 subject to heredity, 399; resem- 

 blance to tadpole, ii, 3; ontog- 

 eny of mammalian, 4 



Spicules of sponges, ii, 50 



Spinules of Ascidian, ii, 44 



Spirits, historical relation to es- 

 sences, ii, 288; historical relation 

 to breath and air, 338 



Sponge tissues, i, 144 



Spontaneous, generation, ii, 316; 

 in mental activity, 226; on 

 meaning as applied to "origin 

 of life" (see glossary) 



Spores, i, 269; of mosses and 

 ferns, ii, 258 



Squid, i, 221 



Squirrel, storing habits of, ii, 271 



Stage, one celled, of animal life, 

 i, 214 



Star fishes, ii, 96 



Starch grains, i, 214 



Stein, Fr., i, 286 



Stentor, supposed nerves in, i, 245; 

 ontogeny of, 272 



Stephens, Frank, on storing habits 

 of bees, ii, 268; of antelope 

 ground squirrel, 271 



Stevens, Miss M. M., i, 350 



Stimuli, summation of, ii, 167 



Storing habits, of honey bee, ii, 

 268; of woodpecker, 269; of 

 mammals, 270 



Stout, G. F., ii, 298; unanalyzed 

 cognition in consciousness, 308; 

 on personality in animals, 328 



Strassburger, Ed., i, 342; and 

 chromosome dogma, ii, 259 



Striated muscle tissue and hered- 

 ity, ii, 59 



Structurelessness, i, 285 



Structures, ii, 199; constitutively 



antagonistic, 134 ; organ-form- 

 ing, 141 



Struggle, of the parts, ii, 175; for 

 existence, 225 



Studies, practical, i, 214 



Sub-conscious, ii, 350 



Subjective, ii, 231; side of asso- 

 ciation, 230; and "inner," 292 



Substance, of soul, i, 4; organic 

 production of, 81; simple homo- 

 geneous, 281; imaginary, 240; 

 nutritive, 244; criterion of ele- 

 mentary, 287; abuse of the 

 term, 2*98; respiratory, 301; and 

 energies, 337; free and vague 

 appeals to, ii, 239 



Sugar, and enzyme action, ii, 81 ; 

 from liver into blood, 132 



Summation, of stimuli, ii, 167 



Sumner, F. B., ii, 258 



Supernaturalism, and finalism, ii, 

 142; and materialism, 148 



Suprarenal body, ii, 114, 135; in 

 alliance with thyroid and pitui- 

 tary, 127 



Surface energy, of muscle fibers, 

 ii, 63 



Surfaces of separation, ii, 170 



Surf perches, matings, habits of, 

 ii, 265 



Surgeons, Swiss, ii, 115 



Surplus energy, ii, 273 



Sutton, W. S., i, 356 



Swarm spores, of radiolaria, i, 278 



Swezy, olive, i, 291 



Symbiotic theory of organism, i, 

 35, 183 



Symmetry of animals, ii, 189 



Sympathetic nervous system, ii, 

 128 



Synthesis, organizing, ii, 149; as- 

 similative, 205; and analysis, 

 235; apperceptive, 237 



System of nature, i, 4 



Systematic biochemistry, i, 95 



Tadpoles, of frogs and toads, ii, 



143 



Takamine, J., ii, 123 

 Taste, i, 84 

 Taxonomic, in organic grades, ii, 



42; discrimination, 62 





