SUBJECT INDEX 



889 



Diurnal periodicity (Continued) 



length of periods, 507 



in light sensitivity, 525, 539 

 wavelength effects, 539 



in mitosis, 521 



role of nuclei in, 520, 521 



in spore discharge, 508, 509 



synchronization of, 523 



in tissue cultures, 521 



in turgor pressure, 507 

 Diurnal rhythms; see also Rhythm 



in Gonyaulax, 568 

 period of, 573, 574 

 phase of, 573 



synchronization of, 523 

 DNA, see Deoxyribonucleic acid 

 Dolichonyx oryzivorus 



influence of day length on testes 

 of, 759-765 

 Dormancy 



action spectrum for breaking, 458 



of tree peony, 223 



effect of gibberellic acid on, 

 223 

 Duck, domestic, 724, 728, 729 

 Dyes 



binding of, 6, 10 



fluorescence of, 5 



isomerism of, 5, 6, 8, 10 



phosphorescence of, 5 



photoreduction of, 7-12 



as photosensitizers, 10, 11 



Egg production, 787, 788 

 Electron spin resonance, 57, 58 

 Electroshock, 834 

 Emergence, of insects 



diurnal periodicity in, 508 

 Emission spectrum 



of Gonyaulax huninescence, 567 

 Endogenous diurnal periodicity; see 

 also Diurnal periodicity 



"Endogenous growth," 186, 195 



of pea iniernodc sections, 183, 



184, 187, 190, 193, 194 



sensitivity to red light, 183, 



184, 187, 190, 193, 194 



Energy transfer 



in plant materials, 57-67 

 in solids, 52-57 

 in solutions, 47-52 

 in solutions and solids, 47-67 

 Entrainment, 479, 480, 481, 483, 



491,501-504 

 Enzyme activity 



diurnal periodicity in, 507 

 Eosinophil, 813-815, 818-822, 

 833, 834, 837, 842, 851, 853, 

 856-858, 861, 863, 864 

 Epilepsy, 834 

 Epinephrine, 827, 830 

 Euglena 



absorption spectrum of, 1 6 

 Evocation 



of diurnal periodicity, 522 



Far-red radiation 



effect on pea internode section 

 growth, 181, 183-189, 191- 

 195 

 effect on seed germination, 198- 



205 

 interaction with indoleacetic and 

 gibberellic acids, 181, 184- 

 190 

 Feedback 



in Gonyaulax rhythms, 581 

 Filters 



blue glass, 112, 115 

 lemon-yellow glass, 113 

 plastic blue, 112, 113 



opacity to red and near infra- 

 red, 112 

 Plexiglas B 27, alt, 113 

 red glass, 1 1 2 



