Index 



725 



Dorsoventrality, establishment of, 

 331-333 

 reversal of, 332 

 Duplications, 707, 713 

 Dwarf mouse, anterior pituitary 

 of, 159,605 

 endocrine deficiency in, 586 

 growth cessation in, 604 

 Dwarfs, body size in, 623 



Ear, organogenesis of, 415-423 

 plate (placode) of, 415 

 prospective areas of, 415, 416 

 vesicle (otocyst) of, 415 

 Ear capsule, formation of, 422- 

 423 

 induction of, 422 

 Ear ectoderm, 415 



axial determination of, 417- 



420 

 ciliary beat of, 420 

 equipotentiality of, 415, 419 

 polarization of, 417-420 

 regenerative capacity of, 415 

 Ear plate (placode), normal fate 



of, 415 

 Ear vesicle, capsule formation of, 

 422-423 

 induction of, 420-422 

 mesodermal activation of, 



420, 421, 422 

 morphogenetic influence on, 



416 

 as mosaic, 415 



neural activation of, 420, 421, 

 422 

 Echinoderms, gradients in egg of, 

 665, 666 

 progressive differentiation in, 

 327-331 

 Ectoderm, ear. See Ear ectoderm, 

 primitive organization of, 306- 

 309 

 Ectodermal derivatives, deter- 

 mination of, 255, 256 

 Effector, 351 



Egg, activation of, 202-203 

 animalization of, 329-330 

 antifertilizin of, 191 

 axial polarity of, 315-318 

 centrifugation of, 233 

 constriction of, 233 

 cytoplasmic areas of, 324 

 cytoplasmic specification of, 



316-317 

 diameter of, 621 

 fertilizin of, 185-189 

 fusion of, 233, 298 

 inductive capacity of, 233, 265 

 marginal plasma of, 230, 233, 



234 

 organization of, cortex and, 318 

 genotype control of, 317 

 stratified constituents of, 317 

 polar lobe of, 319-320 



Egg, polar organization of, 317, 

 318 

 pole plasm of, 320-321 

 reaction of, 19^1-201 

 rotation of, 230, 231 

 senescence of, 184 

 spermatozoon approach to, 181- 



182 

 structure of, 230-231 

 Electric effects, 356, 357 

 Electric fields, 350, 356 

 Electric guidance, 356 

 Electric potentials in hydroid re- 

 generation, 668, 669 

 Electronmicroscopic demonstra- 

 tion of fiber collaterals, 368 

 Eleocytes, 665, 667 

 Embryo, interference with, 31- 

 37 

 normality of, criteria of, 27, 28 

 Embryogenesis, energy exchange 

 and enzymes during, 520- 

 555 

 in teleosts and birds, 297-314 

 See also Development. 

 Embryological problems, methods 

 and techniques in, 25-37 

 molecular level, view of 



Roux, 27 

 observation vs. interference 



as approach to, 26-31 

 Roux's analysis of, 31, 32, 33, 

 35, 36 

 Embryology, evolution and, 13- 

 22 

 history of, 1-22 

 Naturphilosophie in, 8-1 3 

 Embryonic axis and cleavage (tel- 



eost), 298, 299, 300 

 Embryonic induction between 

 germ layers, 338-339 

 in insects, 338-339 

 Embryonic organization in initia- 

 tion of insect egg, 337 

 Embryonic shield in teleosts, 302, 



304, 305, 307 



Enamel organ, ameloblasts of, 494 



organizing influence of, 494 



Endocrine correlation, anterior 



pituitary-adrenal, 585-593 



anterior pituitary-gonad, 



593-600 

 anterior pituitary and 



growth, 600-606 

 anterior pituitary-thyroid, 



574-585 



ontogeny of, 574-619 



Endocrine glands in amphibian 



limb regeneration, 686. See also 



Hormones, and specific glands. 



Endocrine receptor, 583, 597, 605 



Endomitosis in cell differentiation, 



117,118 

 Endoneurial fluid, 346 

 End-organ, 347 



Energy release, alternate path- 

 ways of, 541-542 



during cleavage, 529 



cyanide-insensitive respira- 

 tion and, 541-542 



during development, 520-523, 

 528-533 



non-phosphorylating glycoly- 

 sis and, 542-543 



phosphogluconic acid shtint 

 and, 542 

 Energy sources in amphibian em- 

 bryo, 535-538 



from carbohydrate, 533, 534, 



535, 536 



in chick embryo, 533 

 during development, 533-538 

 from fat, 533, 534, 535, 538 

 in fish embryo, 534 

 in grasshopper embryo, 534 

 ontogenetic sequence of, 533- 



538 

 from protein, 533, 534, 535, 



536, 537 



in sea urchin embryo, 534- 



535 

 utilization changes in, 538 

 Entelechy, 20 

 Entoderm, potency localization in, 



310-311 

 Entodermal derivatives, organo- 

 genesis of, 453-458 

 Environmental factors in terato- 



genesis, 701,702, 711 

 Enzymes, activation in develop- 

 ment, 87 

 activity in embryos, 84 

 adaptation of, 165 

 adaptive, 85 

 of cell membrane, 58 

 concentration in embryos, 84 

 in differentiation, 331 

 gene control of, 165 

 in ontogenesis, 543-548 

 relation to functional differen- 

 tiation, 545-548 

 cholinesterase and behavior 

 in, 546, 547 

 respiratory, synthesis of, 543 

 Epidermal ridges, mesodermal 

 initiation of, 510-512 

 regeneration of, 512 

 Epidermis, 499 



dermal papilla action on, 509 

 differentiation-dependency of, 



308 

 in limb regeneration, 679-684 

 mesodermal role in specializa- 

 tion of, 507-512 

 physiological regeneration of, 



689-690 

 regeneration of, 512 

 See also Skin. 

 Epigenesis, 2, 3, 4, 5 

 Aristotle and, 3, 4, 5 



