5y6 



SUBJECT-INDEX. 



365 -9 ; vertebrate skeleton, S, C20, 

 525, 534. 



Species : adaptation and stability, 1, 

 199 ; cliange in, 1, 209 ; hereditary 

 transmission, i, 238-41 ; variation in 

 wild and cultivated, 1, 260-2, 262-4; 

 gamogenesis, 1, 284-6 ; indefinite 

 value, 1, 305, 361 ; special creation, 1, 

 337-40 ; instability of homogeneous 

 and heterogeneity of, 1, 421-3, 428, 

 429-31, 405, 473 ; persistence of, 1, 

 428, 430 ; natural selection and equi- 

 libration, 1, 457-62, 469, 474. 



Specific gravity, of orgnnisms and en- 

 vironment, /, 145, 149. 



Sperm cell ; unspecialized form, 1, 219- 

 24, 253 ; dissimilarity of, 1, 205-7, 

 207-8, 2G9-7J, 280 ; equilFbrium, 1, 

 277. 



Sphere : tendency of units to form, 1, 

 15 ; the embryonic form, 1, 143 ; 

 symmetry, 2, 116. 



Spheroid, synunetry, S, 117. 



Spine {Ree Vertebra fa) . 



Sponge : multieentral development, 1, 

 135 ; reproductive tissue, 1, 222 ; 

 morphological integration, S, 81-3, 

 111 ; physiological differentiation, S, 

 283, 379; physiologically unintegrated, 

 S, 375; development and genesis, S, 

 442; analogy from, S, 545. 



Spontaneous generation : and hetero- 

 genesis, 1, 210 ; and evolution, 1, 479- 

 84, 485. 



Stamens, and foliar homology, Z, 33-6. 



Starches : properties, 1, 10-12 ; saccha- 

 rine transformation, 1, 36, 37 ; S, 532. 



Steensirup, J. J. S., on eye of jileuro- 

 nectidce, 2, 188. 



Stickleback: ova, S, 433; bothriocepTialus 

 in, 2, 466. 



Stomach (see Alimentary canal). 



Stomala, distribution, 2, 243. 



Straiglit line, and evolution hypothesis, 

 1, 348. 



Strain : compression and tension of, 2, 

 192-5 ; vegetal structure, 2, 543-57, 

 561-5; origin of vertebrate type, .2,569. 



Strawberry ; multiaxial development, 1, 

 137 ; multiplication, 2, 421. 



Structure : biology and organic, 1, 94-6, 

 96-8 ; functional co-ordinate modifi- 

 cation, 1, 100-3 : size and organic, 1, 

 110-12 i growth and complexity ot, 1, 

 117-9, 132 ; relation to environment, 

 I, 145-50 ; precedes function, 1, 153, 



167 ; functional complpi''ty, 1, 158, 

 167 ; also differentiation, i, 157-60 ; 

 reparative power, 7,175; social p.nd 

 organic functional interdependence, /, 

 192-6, 197-9 ; reproductive tissue, 1, 

 219-22; lieredity and function, 1, 

 244-52, 255-6 ; varied by function, 

 1, 270-2, 455-7, S, 200; zoological 

 classification, 7, 305-8; equilibration, 



1, 432-5, 474 ; co-operation witli 

 function, 2, 3 ; evolution and in- 

 creased, 2, 4; earliest organic forms, 



2, 12 ; cylindrical vegetal, 2, 54-8 ; 

 permanence and complexity, 2, 278, 

 280 ; function and epidermic, 2, 295- 

 9, 380; and muscular, 2, 360, 384 j 

 and repair and growtli, 2, 361-4 j 

 adaptation and equilibration, 2, 385 j 

 persistence of force and physiological 

 adaptation,^, 387 ; evnlution, 2, 474- 

 8. (See also Morphology). 



Struthors, Dr. J. -. on heredity, 1, 243, 

 252 ; digital variation, 1, 2.j8-60. 



Sugars: properties, 1, 10-12; vegetal 

 trausformation, 1, 30, 37 ; 2, 562. 



Sulpliur : allotropic, 1, 4, 50 ; organic 

 evolution, 1, 486. 



Sun (see Light). 



Survival of the fittest (see Natural se- 

 lection). 



Symmetry (see Morphology), 



TjiNiA (see Jlntoaoa). 



Taste, dependent on cliemical action, /, 



51. 

 Teeth ; hereditary transmission, I, 244 j 



suppression of mammalian, 1, 370 j oi 



uncivilised and civilized, 1, 455. 

 Tcmperjture (see Heat). 

 Tension (see Strain). 

 Thallassicollce : unicentral development, 



1, 134 ; secondary asgregate, 2, 80-3, 



111 ; symmetry, 2, 170. 

 Tide (see Sea). 

 Tissue (see Physiology). 

 Tortoise : life of dog and, 1, 84, 8S\ 



natural selection and carapace, 1, 4'1&. 

 Tree (see Botany). 

 Treuiblay, A., on the polype, 1, 180. 

 Trichiniasis, in Germany, 1, 343. 

 Tuhicnlce ; develo]iment, 2, 92 ; bilateral 



symmetry, 2, 180. 

 Turnip : outer tissue, 2, 237 ; vasculal 



system, ^, 264, 268, 547, 560, 565. 

 Twins, similarity of, 1, 261, 264. 



