INDEX 



803 



Corymorpha: reconstitutional gradient in, 38; 

 respiratory determinations in, 60; gradi- 

 ents in early stages of, 96; gradients in full- 

 grown, 98, 99, 100, 102; differential de- 

 velopmental modification in, 170; regres- 

 sion in, 170; reconstitution field in, 278, 

 279; dominance in reconstitution of, 316; 

 apical independence in reconstitution of, 

 Z^y, scale of organization in, 345, 357; 

 new patterns in reconstitution of, 359, 

 371, 414; multipolar forms of, 360, 416, 

 417; induction by implants in, 378; oxygen 

 and reconstitution of, 414; experimental 

 obliteration and determination of pattern 

 in, 416; experimental dorsiventrality in, 

 418, 693; cell aggregates of, 419; oocyte of, 

 659; origin of radial tentacle pattern in, 

 674 



Crepidiila: early cleavage of, 549; effects of 

 centrifuging on, 584 



Ctenophores: reconstitution in adult, 41; 

 transmission in plate row of, 56; differen- 

 tial susceptibility in, 106; functional domi- 

 nance and physiological isolation in, 327; 

 cleavage of, 563; egg cortex of, 563; egg 

 polarity of, 565; embryonic reconstitution 

 in, 566 



Cumingia: axiate pattern in ultracentrifuged 

 eggs of, 427, 590; embryonic duplication 

 in, 558 



Ciirtisia, reconstitution in, 45 



Cyclopia: in planarians, 178; in squid em- 

 bryo, 248; in fish embryo, 256; in amphib- 

 ian embryo, 262; in chick embryo, 265; 

 in hybrid fishes and amphibia, 267; in ver- 

 tebrates in general, 270, 282; and lens de- 

 velopment, 489 



Cytophore, and spermatozoan polarity, 624 



Dedifferentiation: in adventitious plant 

 buds, 17; views concerning, 299, 301, 302; 

 of egg and sperm, 300; in alterations of 

 determination, 300; in epidermal plant 

 cells, 300; in protozoan fission and recon- 

 stitution, 300, 615, 618; in reconstitutions 

 in general, 301; of annelid neoblasts, 301; 

 in ascidian reconstitution, 302; in verte- 

 brate regenerations, 302; and modulation, 

 303; in lens regeneration, 396 



Dendraster: larval development of, 197; dif- 

 ferential inhibition in, 202; secondary 

 modifications of, 205; exogastrulation of, 

 223; centrifuging and development of, 427 



Dentalium: polar lobes of , 552, 56o;dispermic 

 eggs of, 594 



Determination: nature of, 85, 291; relative 

 character of, 85, 291, 293; in relation to 

 gradient-level, 293; and dedifferentiation, 

 299; axial progress of, 332; in amphibian 

 presumptive neural region, 466; of amphib- 

 ian lens, 490; of amphibian ear, 496; in 

 relation to "double assurance," 500 



Differentiation: and formative substances, 

 32, 292, 362, 437, 552, 558; independent 

 or self-, 212, i^y 336, 338, 3S7, 359, 559, 

 711, 713; concept of, 291, 294; cytoplasm 

 and nucleus in, 295; genes in relation to, 

 295; and molecular pattern, 296, 629; and 

 gradient pattern, 297; and chemical domi- 

 nance, 307;, and embryonic induction, 

 chap, xii; without cleavage, 596; proto- 

 zoan, 616; and unicellular asymmetries, 

 627; of spermatozoa, 630; chemo- or in- 

 visible, 712; of planarian parenchyma /;; 

 vitro, 714 



Dileptus, dift'erential dye reduction in, 94 

 Dominance, physiological: as integrating fac- 

 tor, 8, 330, 432; transmissive and trans- 

 portative, 8, 304, 308, 330; in relation to 

 gradients, 11, 432; range of, 11, 305, 306, 

 344, 349, 351, 357; in fields, 278; in am- 

 phibian limb field, 286; of high region of 

 gradient, 304; in relation to rate of growth, 

 305, 324; gradient determination by, 307; 

 as inductor, 307; of plant vegetative tip, 

 308; blocking of, in plant, 308, 311; in 

 conifer, 30S; in relation to plant growth 

 forms, 309; role of auxins in, 309, 311; in 

 phyllotaxis, 311; of root systems and root 

 axis, 312; in lower plants, 313; in mush- 

 room reconstitution, 313; of adventitious 

 buds, 313; in Tubidaria, 314, 320; in Cory- 

 morpha, 316, 359, 371; and delayed sec- 

 tion, 316, 408; in branching hydroids, 319; 

 in corals, 319, 635; in planarians, 321; in 

 Stenostomum, 323; in annelids, 324; in 

 Halidystus reconstitution, 326; in seg- 

 ment formation, 327; in ctenophore plate 

 row, 327; reversal of functional, 328, 329, 

 330; in vertebrate heart, 328; in vertebrate 

 alimentary tract, 329; independent de- 

 velopment of, 2,2,2,, 2Z^, 357, 359, 362, 713; 

 and scale of organization, 344; induction 

 of regression by, 398; destruction of 

 Stenostomum zooids by altered, 399 ; effects 

 of other parts on, 406; in compensatory 

 asymmetry reversal, 411; by implanted 

 sea-urchin micromeres, 442; in amphibian 

 neural induction, 455; in homeogenetic 

 induction, 481; in avian induction, 483; in 

 embryonic sea-urchin fusions, 541; in 

 Schizocystis, 604; in Vorticella fission, 616; 

 in hydra budding, 635; in asymmetry, 701. 

 See also Amphibian dorsal inductor; In- 

 duction 



Dorsiventrality: in Marchantia, 32; in ascidi- 

 an egg, 145, 577, 682; in lamprey embryo, 

 147; in teleost embryo, 149; in amphibian 

 embryo, 151, 684; experimental oblitera- 

 tion of, in amphibian, 259; determination 

 of, in amphibian limb, 286, 390; in amphib- 

 ian otic primordium, 289; in embryonic 

 reconstitution, 375; experimentally de- 

 termined in Corymorpha, 418; in relation 



