INDEX 



505 



frog's egg, differential susceptibility, 

 68, 346, 348 

 dispermy, 37 

 inverted, 35, 38, 67, 94 

 nuclear injuries, 404 

 "parasitic", 328 

 polarity, 14, 35, 62, 67 

 polyspermy, 131 

 temperature-gradients, 338, 339, 



340, 341 



Fncus, polarity, 60, 61, 70, 312 

 function, 34, 431 f. 



in heteromorphosis, 361 

 functional activity, 33 f., 426, 435 

 functional differentiation, 13, 34, 431 

 functional period of development, 34, 



418 f. 

 functional response, 436 

 Fimdulus, cyclopia, 344, 347 



differential susceptibility, 344, 347 



double monsters, 329 



mosaic development, 195 



pigment-cells, 174 



plasticity, 100 



gall-bladder, 32 



Gmnmarus , precursor substances, 412 



rate-genes, 409, 410 

 ganglia, spinal, 31, 220, 393 

 gastral mesoderm, 20 

 Gastropoda, asymmetry, 71, 72 81,411 



polar lobe, 113 



shell-growth, 370 

 gastrula, 13, 40 

 gastrulation, 16, 17, 19, 26, 40, 95, 330 



and temperature-gradients, 342,494 

 gelation, 122 

 genes, 7, 397 

 genetics, 5 

 genome, 403 



Gephyrea, determination, 140 

 germ-bands, 114, 117 

 germ-layers, 18, 46, 140 



early plasticity, 47 

 germ-plasm, Weismann's theory of, 4 

 germinal epithelium, 254 

 gill-field, 233, 360 

 gills, 31,46 



dependent differentiation, 45 



functional differentiation, 435 



heteroplastic grafts, 45, 142, 406 



mosaic development, 199 



and opercular perforation, 180, 429 

 glomerulus, mosaic development, 199 



glycogen, 154, 190 

 glycolysis, 214 

 gonad-field, 254, 264 

 gonads, 254, 263 



asymmetry, 362 



differentiation, 257, 262 

 gourds, shape-genes, 416, 417 

 gradient, 288, 318 



activity-, 42, 67 f., 81, 276, 313 



asymmetry-, 77 



double, Annelids, 309 



electrical, 61, 63, 497 



in cell-size, 39, 67, 339 



in inductive capacity, Corymorpha, 

 165,291 



in lens-forming potency, 238 



in potency of differentiation, 160, 268 



in regenerative capacity, Planarians, 

 298 



morphogenetic, 292 



oxidation-, 35, 274 



physiological, 36, 41 



temperature-, 39, 137, 138, 33^, 

 339, 340, 341, 342, 343, 494 

 gradient-field, 39, 139, 231, 274 f., 



305, 354, 369 



primary, 311 



secondary, 310 

 gravity, 35 



grey crescent, 14, 37, 38, 67, 320 

 growth, 13, 26, 33, 58, 418 

 growth-capacities, 205 

 growth-coefficient, 225, 366 

 growth-equilibrium, 366, 421 

 growth-gradient, 366 f., 368, 414, 421 

 growth-partition coefficient, 206, 421 

 growth-potency, 369 

 growth-profile, 367, 371 

 growth-rates, fibroblasts, 210 



limb, Urodele, 225, 421 

 growth-tendency, of epidermis, 41, 42 

 gut, amphibian, explanted, 203 



asymmetry, 73, 74 



differentiation, 249, 484 



presumptive, 22 

 gut-roof, 13, 20 f., 135, 155 



and situs inversus, 74 



hair-follicles, mosaic development, 201 

 Haliclystus, inhibition, 292 

 haploid graft, 364 

 haploidy and cell-size, 133 

 Harenactis, multiple regeneration, 300 

 harmonic equipotential system, 325, 3 53 



