502 



NDEX 



cleavage, frog, 404 



frog, meroblastic, 40 



Gastropods, 71 



Ilyanassa, 121 



insect, 126 



Patella, 114 



polyspermic, frog, 131 



sea-urchin, 128 f., 130 



under compression, 43, 84, 85 

 cleavage-pattern, 83, 114 

 Clepsine, cleavage, 72 



double monsters, 114, 328 



germ-bands, 114 



pole-plasm, 113 f. 



prelocalisation, 119 

 clinostat, 36 

 cloaca, 32 



Clytia, blastomeres, isolated, 97 

 coelomic cavity, Amphibia, 28 

 collar-cells, sponge, 250, 281, 483 

 colloid structure, 337 

 compensatory hypertrophy, 431 

 "competence", 100, 136 

 competition, nutritive, 425 

 complex components, 9, 191 

 composite frog embryos, 195, 407 

 compression, 83 

 concentration-gradient, 258 

 conjunctiva, 140, 178 

 connective tissue, 33, 179 



capsule, 392 



differentiation, 432, 433 



induction of differentiation by, 179 

 Copepods, antenna-growth, 367 

 cornea, differentiation, 178 

 cortex, gonad, 254 

 cortical layer, egg, 152 

 Corymorpha, holdfast resorption, 298 



inductive capacity, 290, 291 



multiple hydranths, 300 



organiser, 164 f., 291 



polarity, 63, 65, 280 



range of dominance, 288 



reconstitution, 284 

 cranium, 175, 394, 395 

 Crepidula, polarity and yolk, 67 

 Crustacea, chelae, 71 



cleavage, 84 



growth-gradients, 267 

 Ctenophores, cleavage, 105 



mosaic development, 106, 107 

 Ciicurbita, shape-genes, 416, 417 

 Cumingia, centrifugalisation, 218 

 cut surface, regeneration at, 307 



Cyclas, polarity, 62 

 cyclopia, 245, 332, 348, 402 



frog, 347 



Fundulus, 344, 347 



Planarian, 349 



Triton, 350, 352 

 Cynthia (see also Styela), 119 

 cytoplasm, 46, 66, 170 f., 220, 320, 

 398 



and cleavage, 89 f. 



and heredity, 405 



and sex-differentiation, 263 



susceptibility, 86 

 cytoplasmic factors, 411 

 cytoplasmo-nuclear ratio, 132 f. 



dedifferentiation, 63, 209, 280, 287, 



431 

 Corymorpha, 65 

 delayed fertilisation, frog, 96, 262 

 dendrites, 379 

 Dendrocoelum, regenerative capacity, 



298, 326 

 Dentalium, cleavage, 108 f., 109, iio 

 organ-forming substances, 108, 216 

 partial larvae, ill, 112 

 polar lobe, 109, no, 120, 216 

 regulation, 126, 216 

 dependence, basal regions, 283 

 dependent-differentiation, 44, 45, 47, 

 53 f., 173 f., 188, 191, 211, 255, 



321,374 

 Dero, susceptibility-gradient, 277 

 determination, 46 



labile, 49, 50 f., 94, 136, 137, 140, 

 187, 268, 373, 492 



lack of, 273 



of organiser, 163 



positive and negative, 216 



regeneration-buds, 271 



stream of, 127, 134, 173 



subregions, 225 



time-relations, 307 

 developmental physiology, 11 

 dichotomy, 299, 328 

 Diemyctylus, balancer-field, 236 

 diencephalon, determination, 295 

 differential, 38 f., 67, 280 



axial. Child's theory of, 7, 274 f. 

 differential acceleration, 301, 344 

 differential acclimatisation, 301, 335 

 differential inhibition, 292, 301, 335, 



336,425, 

 differential stimulation, 301 



