722 



Index 



Antifertilizin, function of, 193- 

 194 

 of sperm, 189-191 

 Antigen-antibody reactions, 185, 



191 

 Antigens of blood cells, 563-564 

 of brain, heart, and spleen, 559, 



560 

 in development, 556-564 

 differentiation of, 165 

 hapten as determinant of speci- 

 ficity of, 557, 558 

 kinds of determining groups, 



558, 559 

 of lens, 559, 560 

 neural, 370 

 "non-vitelloid," 562 

 with serum specificity, 559, 560, 

 561, 562 

 Arrest, developmental, as terato- 

 genic factor, 703, 705, 706 

 Ascidians, polarity of regenerates 

 of, 665 

 regeneration of, 664, 665, 666, 

 667, 668, 671, 672 

 apyrase in, 672 

 dedifferentiation in. 667, 668 

 inhibition of, 671 

 stimulus for, 666, 667 

 temperature effect on, 666, 

 671 

 Asymmetry of heart rudiments, 

 457, 458 

 of "organizer," 457, 458 

 "Attractions," 351, 354, 356, 357, 



362, 366 

 Auditory vesicle. See Ear vesicle. 

 Auto-antibody concept, 566-567 

 adhesion of cells and, 567, 



568 

 immune antibodies and, 567 

 relation to gene action, 568 

 to induction, 568-570 

 Autotomy, tail, 686, 687, 688 

 Axial differentiation of CNS, 306, 



307, 308 

 Axis cylinder, 346, 349 

 elongation of, 350 

 outgrowth of, 350-361 

 Axis determination, 230-232 



of ear, 417-420 

 Axis formation in birds, 302-303 

 provisional, 297 

 in teleosts. 299, 300, 301, 302, 

 304 

 Axis of polarity, cleavage planes 

 and, 315 

 constituents along, 317 

 cortex and, 318 

 differentiation and, 318 

 establishment of, 317 

 ground substance and, 317 

 structural basis of, 318 

 visible differences along, 315- 

 316 



Axon, 348 



branches of, 350 



caliber of, 347, 363-365, 367 



elongation of, 350-351, 356, 

 360, 363, 367, 374 

 of medullary cells, 370 



growth of, 363-365 



tissue culture of, 349 

 Axoplasm, 356 



catabolic degradation of, 364 



damming of, 364 



movement, rate of, 364 



synthesis of, 364, 365 



Balfour rule in cleavage, 215 

 Behavior, development of, 390- 



392, 546, 547 

 Bilaterality, establishment of, 

 331-333 

 sperm entrance point and, 331, 

 332 

 Birds, axis formation in, 302-303 

 beak regeneration in, 689 

 chemical teratogenic agents in, 



705, 712, 713, 714, 715 

 chondrodystrophy in, 700, 704, 



706 

 Creeper factor in, 700, 706 

 feather regeneration in, 689 

 insulin as teratogenic factor in, 



703, 712, 713, 714, 715 

 lethal mutants in, 700 

 limb-girdle development in, 



437-^38 

 micromelia in, 704, 705, 711, 



714, 715 

 rimiplessness in, 700, 701, 702, 



703, 710, 712 

 virus as teratogenic factor in, 



702, 714 

 See also Regeneration; Teleosts 

 and Birds; Teratogenesis. 

 Birefringence in neural tube, 359 

 Blastema in amphibian limb re- 

 generation, 679, 680, 681-683 

 Blastomeres, interaction of, 324- 

 331 

 specification of, 318-323 

 egg cytoplasm and, 318-323 

 egg polar lobe and, 319-320 

 egg pole plasm and, 320-321 

 Blastulation, 221-223 

 mechanisms of, 223 

 Blood, 452-453 



erythrocyte source, 452 

 Blood cells, antigens of, 563-564 



isoagglutinogens of, 563 

 Blood islands as erythrocyte 

 source, 452 

 potency of primitive cells of, 

 452, 453 

 Blood vessels, 361, 367, 375 



angioblast as source of, 450, 



451 

 blood flow effects on, 451 



Blood vessels, blood pressure ef- 

 fects on, 451 

 embryogenesis of, 450-452 

 Body size, 128-129 

 in dwarfs, 623 

 eye and, 624 



individual cells and, 620 

 limitation of, 622 

 racial differences in embryo 



and, 622, 623 

 as reflection of cell number, 

 620 

 Bone, regeneration of, 690 

 Brain, 361, 370, 378, 380, 383, 388, 

 389, 392 

 antigens of, 559, 560, 561, 562 

 compression of, 372 

 cortex of, 360, 372, 376 

 macrolocalization in, 388 

 microlocalization in, 388 

 early morphogenesis of, 371- 



372 

 herniation of, 372 

 potentials of, 376 

 size of, 376 

 structure of, 359 

 ventricle of, 371, 373 

 ciliary beat in, 372 

 Brain hormone, action on pro- 

 thoracic gland, 639, 640 

 of neurosecretory cells, 640 

 Branches, nerve, 346, 347, 349, 

 360-361, 368, 381 

 abortive, 368 

 collateral, 347, 360, 361, 365, 



368, 391 

 cutaneous, 362 

 incidence of, 360 

 muscular, 362 

 overproduction of, 368 

 terminal, 360 

 Branchial skeleton, 372 

 "Buengner's cords," 349 



Caliber of axon, 347, 363-365, 

 367 



of nerve fiber, 365 

 Carbohydrate as energy source, 



533, 534, 535, 536 

 Carbon marking, value of, 32 

 Castration (embryo), 482-483 

 Causal analysis, 347 

 Causalnexus of events, 20, 27, 



31 

 Cell(s), adhesion of, 567, 568 



basophilic components of, 44 



blood, 452-453 



centrioles and kinetosomes in, 

 44 



constitution of, 39-64 



cortical gel in, 55-56 



cytochemistry of, 40 



degeneration of, 378, 381 



in teratogenesis, 702, 709, 710 



diameter of. 621 



