294 



INDEX 



in relation to nervous centraliza- 

 tion, 142; precedes appearance 

 of nervous system, 144; incteno- 

 phore plate row, 212; in reflex 

 arc, 233; in higher vertebrates, 

 259 

 Isolation, physiological: in rela- 

 tion to physiological dominance, 

 102; determined in four differ- 

 ent ways, 103; dedifferentiation 

 as result of, 103; in relation to 

 agamic reproductive and repeti- 

 tive processes, 104; in develop- 

 ment of segments, 132; in 

 development of branches of 

 axon, 191; in ctenophore plate 

 row, 217 



Lamarckism, not essential to gradi- 

 ent conception, 65, 270 



Material, in relation to pattern, 2. 



Microcephaly, as differential inhi- 

 bition, 38 



Neurobiotaxis, 173, 200 



Neuroblast, chaps, x, xi 



Neuro-muscle cell: polarity of, 

 203; as primitive receptor- 

 conductor-effector, 238, 241; 

 effector of, 240 



Neuron: structure and develop- 

 ment of, chaps, x, xi; of spinal 

 ganglion, 166, 196; functional 

 and developmental polarity of, 

 230 



Organism: pattern and material 

 of, 1 ; simplest forms of, 4, 23 

 relation of, to external world, 7; 

 spatial patterns of, 8; physiologi- 

 cal correlation in, 10; as behav- 

 ior pattern, 22, 268 



Oxidation: in relation to physio- 

 logical gradients, 25, 84; in 

 relation to susceptibility, 31; in 

 relation to excitation, 71, 72, 76, 

 78, 80; in relation to differen- 

 tiation, 92 



Pattern, axiatc: as one of three 

 patial patterns in organisms. 8; 



as physiological gradient, 24. 

 See also Pattern, organismic 



Pattern, bilateral: as one of three 

 spatial patterns in organisms, 8; 

 obliteration of, 56; origin of, 57; 

 asymmetry in, 59. See also 

 Symmetry 



Pattern, cell: as surface-interior 

 pattern, 23, 61; nucleus as 

 internal differentiation of, 61 



Pattern, general: definition of, 2; 

 distinction between, and mater- 

 ial, 2, 270; in organism, 2; proto- 

 plasmic, 5, 14; different orders of 

 magnitude of, 5; chromosomal, 

 6, 18; types of, in organism, 8; 

 excitation and transmission in, 

 16; relation between cytoplas- 

 mic and nuclear, 19; of neuron 

 compared with plant, 169. See 

 also Pattern, organismic 



Pattern, neuronic: development 

 and structure of, chaps, x, xi; in 

 relation to chemotaxis, 170; as 

 galvanotactic reaction, 171; in 

 relation to electrical polariza- 

 tion, chap, xi 



Pattern, organismic: definition of, 

 3; order of magnitude of, 5, 11, 

 85; origin of, 6, 14, 17, 19, 50; 

 preformistic theory of, 6; vital- 

 istic theory of, 7; epigenetic 

 theory of, 7, 9; in relation to 

 external world, 7, 14, 50; quanti- 

 tative character of, 8, 9, 24, 86; 

 three chief types of spatial, 8; 

 as a basis for chemical correla- 

 tion, 13; excitation and trans- 

 mission primary factors of, 17, 

 21, 268; in relation to chromo- 

 somes, 17; surface interior, 

 23, 61, 87, 152; axiate, 24; 

 bilateral, 26; as physiological 

 gradients, 27; precedes appear- 

 ance of nervous system, 144; 

 not necessarily adaptive, 236. 

 See also Gradients, physiological 



Pattern, protoplasmic, 3. Sec also 

 Pattern, general; Pattern, or- 

 ganismic 



