SUBJECT INDEX 



017 



Diliydrotliioctate and flavin mononu- 

 cleotide, spcctium of complex be- 

 tween: 160 



Diiiydiotliioctyl dehydrogenase reaction: 

 nicdianism of, 157; reduction with 

 DPNH, effect of arsenite on spectrum 

 of, 158; reduced with a-ketoglutaric 

 dehydrogenase, efTect of arsenate on 

 spectrum of, 159 



Dimethylaminonaphthalene conjugates: 

 excited states, 82; of proteins, 102 



Dinucleotide, fluorescence quantum 

 yields: 133 



Diphosphopyridine nucleotide, proper- 

 ties of: 145 



DNA: hypochromism in, 60; rotatory 

 dispersion of, 61 



DPN: ethylene oxide analogue of, 148; 

 and DPXH, relative affinities of, 121 



DPXH: alpha and beta, 146; alpha and 

 beta isomerism at pyridine-N-riboside 

 bond, 109; bound, fluorescence of, 119; 

 fluorescence excitation and emission 

 spectra of. 112; fluorescence excitation 

 spectra of, 110, 146; fluorescence exci- 

 tation spectrum in water as a func- 

 tion of temperature. 111; folded, con- 

 formations of, 109; polarization of, 

 120; spectral e\idence for folded con- 

 formation, 110 



Drosophila: 772 



Dupiicitv theory of vision: 788 



Effect of various agents on 700 m/x shift 

 in photosynthesis: 410 



Electronic charge distribution: 13 



Electronic configuration state and transi- 

 tions: 44 



Electronic dipole transition selection 

 rules for several heteromolecules and 

 state symmetries, 45 



Electronic energy, storage and transpor- 

 tation of: 7 



Electronic excited states of simple mole- 

 cules: 11 



Electronic free energy: 7 



Electronic orbitals, states and transi- 

 tions: 12 



Electronic spin resonance in chloroplast 

 materials: 340; signal of o-chloranil 

 "doped" metal-free phthalocyanine, 

 effect of ilhnnination on, 336; spec- 

 trum of o-chloranil "doped" piithalo- 

 cyanine, 335; studies of photosynthetic 

 systems, 356 



Electronic states of a diatonic molecule: 

 28; and molecular orbitals, symmetry 

 classifications of, 39 



Electronic structure and biological func- 

 tion: 31 



Electronic transitions, probability of: 46 



Electronic and vibrational states, en- 

 vironmental jjerturbations on: 21 



Emerson effect, action spectra of: 381 



Emission spectra: of chyraotrypsin, 96; 

 of pepsin, 96; of spinach chloroplasts, 

 348 



Emission spectrum: of firefly light in 

 vitro, 238; from triplet to ground 

 state, 69 



Energy transfer: 28; effect of environ- 

 ment upon, 28; tion-radiative, 26; in 

 photosynthesis, 397; and quenching, 

 125; in solid systems, 331; between 

 tyrosine and tryptophan, 128 



Engelmann's experiment with illumi- 

 nated chloroplast: 430 



"Enhancement effect" in Anacystis nidu- 

 lans: 400 



Environmental perturbations on elec- 

 tronic and vibrational states: 21 



Enzyme complexes: of flavin nucleotides, 

 spectra and structure, 108; of pyridine 

 nucleotides, spectra and structure, 108 



Eristalis: 772 



Escherichia coli: 496 



Ethylene oxide analogue of DPN, struc- 

 ture of: 148 



Etiolated pea stem sections, effect of p- 

 chlorophenyl dimethyl urea on growth 

 of: 701 



Etiolated plants: 689 



Euphansia: 756 



Eye, at full sensitivity: 706 



Eye-photophore similarities, significance 

 of: 762 



Eyes, morphology of compound: 790 



