504 



SUBJECT INDEX 



centromeres, 66, 72 



centxosomes, 53, 66 



centrolecithal, 37, 118 



Cerehratulus, 97 



chaetae, 335 



Chaetopterus, 63, 68 



chemical groundplan, 289 



Chironomus, 356 



chorda: see notochord 



chorda-mesoderm canal, 235, 237, 244 



chorio-allantoic grafts, 182, i86s 



chorion, 38 



choroid fissure, 254 



chromatography, 206, 338 



chromosomes, 66s, 367, 372 



lampbrush, 34 

 Chrysopa, 128s 



cleavage, 6, 55, 57s, no, 119, I45, I53, I55, 

 203 



anuclear, 55, 64, 66 



mechanism, 64s 



patterns, 59, 62, 83 



regulation,! 14 

 cloaca, 264 



coat, 146, 154, 226, 439 

 coat colours, 339, 397 

 coelome, 113, 263 

 coelenterates, eggs, 60 



regeneration, 304, 309s 

 colchicine, 70, 305, 431 

 competence, 25, 179, 213, 218s, 274, 431 



and genes, 220, 366 



regional, 216, 259, 308 

 competitive interactions, 211, 289, 312, 

 319, 365, 380, 406s, 413, 420, 422, 432 

 complexity of development, 20 

 concrescence, 229 

 constriction, 125, 133, 148, 1 49 

 cornea, 256 

 corpus luteum, 37 

 cortex, 5, 37, 42, 64s, 89, 103, 439 



amphibian, 150s, 190 



contraction, 71s 



insects, 119, 122, 132, 133 



new, 76 

 stiffiiess, 72, 73s 

 crabs, 288 

 Culex, 392 



cyanide, 203 



Cydostomes, 224s, 243, 247 

 cytogenes, 387 

 cytolysis, 52 



sub-lethal, 197, 212, 232, 274 

 cytoplasmic structure, 6, 369, 386 



dedifferentiation, 14, 306 



deficiencies, 363 



degrowth, 285 



delamination, 59, 155, 234, 236, 244s 



Dentalium, 99 



dermis, 258, 262 



detergents, 93 



determinate development, 122 



determination, 13, 179, 411 



reversal, 15, 306s 

 deuterencephalon, 199, 216, 456 

 differential dichotomy, 174 

 differentiation, 11 



isolated cells, 447 



without cleavage, 63, 68 

 differentiation centre, 123, 127, 129, 132, 



351 

 diffusion, 103, 421, 428, 431, 465 

 direct development, 96 

 disaggregation, 439, 464 

 districts, 23, 25, 322 

 dogs, 296 

 dogfish, 226, 228 

 Dollo's law, 39, 40, 411 

 dominance, 310s, 319, 322 

 dorso-ventral axis : see bilateral symmetry 

 double cycle, 349, 406s, 414 

 Drosophih, bristles, 335s, 346 



C02 genoid, 391 



embryos, 133s 



eye-colours, 337 



gonads, 134, 141s 



imaginal characters, 140 



spermathecae, 373 



vestigial, etc., 362 



wings, 295, 330s, 344,424s 

 duplicitas, 172 



ears, 255 



echinoderms, 41, 42, 72s, 79s, 191. 

 452, 454, 455 



