INDEX 



Abducens nucleus, 389 

 Accessory genital structures. See 



Genital structures, accessory. 

 Accessory sex structures, 595, 596, 

 597, 598. See also Genital struc- 

 tures, accessory. 

 Acetylcholinesterase, 376, 383 

 Acoustic ganglion, 383 

 Activation of egg, 202-203 

 Adenylpyrophosphatase, 376 

 Adrenal, fetal cortex of, 586, 587 



morphogenesis of, 586 

 Adrenal cortex, ACTH effects on, 

 585 

 ascorbic acid accumulation 



in, 588, 589 

 effects on anterior pituitary, 



585 

 lipid development in, 588 

 onset of activity, 577, 587, 



588, 599 

 vascular pattern of, 587 

 Adrenal medulla, differentiation 

 of, 590, 591, 592 

 sympathetic nervous system 



and, 592, 593 

 vascular development of, 587, 

 592 

 Adrenaline, initial formation of, 

 577, 590, 591 

 pituitary-adrenal system and, 



590-593 

 selective action of, 593 

 Afferent influx, 392 

 Affinity in neuron development, 

 356, 363, 371 

 between Schwann cells and 

 axons, 367 

 Alkaline phosphatase, 375 



in amphibian limb regenera- 

 tion, 683 

 Allometry. See Relative growth. 

 Ameloblasts and enamel forma- 

 tion, 494, 496 

 Amitosis, 91, 119 

 Amphibian egg, twinning of, 127- 



128 

 Amphibians, behavioral develop- 

 ment in 546, 547 

 energy sources in, 535-538 

 exogastrulation in, 707 

 eye regeneration in, 690, 693 

 fields in regeneration in, 677, 

 678 



Amphibians, head structures, re- 

 generation of, 685 

 hybrids, abnormal development 



of, 708, 709 

 lens regeneration in, 690-693 

 limb-girdle development in, 



429-436 

 limb regeneration in, 677-686 

 alkaline phosphatase in, 



683 

 blastema, origin of, 679, 



680, 681-683 

 determination of blastema 



in, 679 

 endocrine glands in, 686 

 epidermis in, 679-684 

 nervous system in, 685 

 skeleton, origin of, 678, 679 

 metamorphosis of, 647-648, 649, 

 650,651,652,65-1-655 

 anterior pituitary and, 574- 



575, 635-637 

 cessation of, 656 

 endocrine control of, 631-637 

 iodine and, 634 

 neoteny and, 633, 634, 655 

 thyroid and, 631-635 

 notochord abnormalities in, 707, 



708 

 nucleus and cytoplasm in devel- 

 opment of, 127, 128, 130-138, 

 140, 141, 142, 143, 144, 145, 

 146 

 overripeness of eggs as terato- 

 genic factor in, 709, 71 1 

 progressive differentiation in, 



230-296 

 regeneration in, 677-686 

 regulation in embryos in, 677 

 species differences in regenera- 

 tion of, 677 

 Amphioxus, regeneration of, 675 

 Anaerobiosis in development, 523 

 Androgenesis, 143-146 

 Aneuploidy and development, 



137-138 

 "Aneurogenic" limb, 361 

 Angioblast as source of blood ves- 

 sels, 450, 451 

 Animalization in animal halves, 

 327, 328, 329 

 duration in, 329 

 of entire eggs, 329-330 

 graded intensity in, 329 

 721 



Animalization, hypotheses to ac- 

 count for, 330-331 

 in sea urchins, 327-331 

 time required for, 328 

 Annelids, nervous system in re- 

 generation of, 665 

 polarity in regeneration of, 668 

 progressive differentiation in, 



318-321 

 regeneration of, 665, 668 

 Anode, 356 



Anomalies. See Teratogenesis. 

 Anophthalmia, 383, 711 

 Anterior pituitary in dwarf mice, 

 function of, 159 

 effects of adrenal cortex on, 



585, 586 

 growth and, 600-606 

 histogenesis of, 580, 605 

 hormonal deficiency of, 159 

 metamorphosis and, 574-575, 



635-637 

 onset of ACTH activity in, 

 579, 589 

 histogenesis and, 590 

 of gonadotrophic activity 

 in, 595-600 

 histogenesis and, 599 

 quantitative increase, 

 596, 597 

 of thyrotrophic secretion 

 in, 578, 582 

 histogenesis and, 582, 



583 

 quantitative increase, 

 583, 584 

 thyrotrophic function of, 574-- 



575, 635, 637, 654-655 

 trophic effects on adrenal cor- 

 tex, 585 

 See also Pituitary. 

 Anteroposterior axis, reversal of, 



378, 387 

 Antibody, 370 



cross reaction of, 557, 558, 559 

 kinds of molecues in, 558 

 natural, 564 



placental transfer of, 564 

 Antibody-forming capacity, devel- 

 opment of, 564—566 

 Antifertilizin, chemical nature of, 

 190 

 of eggs, 191 



