SUBJECT INDEX 



589 



Energy dismutation. See Dismutation, of 



energy 

 Energy transfer, 514-517, 522, 548, 558 

 Enolization of chlorophyll. See Chloro- 

 phyll reactions 

 Enzymes, in chloroplasts, 379-381 



in leaves, 41-42 



as limiting factor in PS, 172 

 Ethanol, absorption of CO2, 180 



in bacterial metabolism, 121 



effect on PS, 321 



occurrence in plants, 249, 251, 254 

 Ether, effect on PS, 320-321, 342 



on Chi in leaves, 383 

 Etiolated plants, 429-431 



protochlorophyll content, 404 



Fats, occurrence in chloroplasts, 375 

 Fatty acids, in PR of bacteria, 102, 106, 



108, 110-111 

 Feeding, of albino plants, 47 



of algae with formaldehyde, 257-260 

 with other low-molecular compounds, 

 260-262 



of flagellates, 261-262 

 Fermentation, 53, 110, 121-122, 129, 130, 



136-138, 217, 265, 327, 563 

 Ferric chloride, reaction with Chi, 295, 



464-466, 490-491, 504, 512 

 Ferric oxalate as photoxidant, for H2O2, 64 



for H2O. See Hill's reaction 

 Ferric salts, as oxidants in PS, 541 

 Ferri-ferro systems, 70, 221, 222, 294 

 Ferrous ions, occurrence in chloroplasts, 

 378 



reaction with oxy-Chl, 488, 490 



as reductants in CS, 116 

 Flagellates, organic nutrition, 261-262 



pigments, 405-^07 

 Flashing light experiments, 133, 169, 296- 



297, 307-308, 310, 311, 313, 338, 346 

 Flavones, 401, 402, 479-480, 541 



reduction in light, 547 

 Fluorescence, of pigments, shift in vivo, 383 



relation to primary photoprocess, 483- 

 484 



spectrum, of brown algae, 405-407 

 Fluorescence of chlorophyll in vitro, in 

 coacervates, 392 



in colloids, 385-388, 392, 393 



effect of reduction, 457 



fading, 492, 495, 497, 501 

 interpretation, 484, 489, 519, 546-547 

 in multilayers, 394 

 quenching and sensitization, 483, 485- 



486, 518, 546-548 

 yield, 485 

 Fluorescence of chlorophyll in vivo, 167, 392 

 carotenoid-sensitized, 476, 515, 522, 558 

 effect of anaerobiosis, 328 



of boiUng, 393 



of cyanide, 310-311 



of urethan, 322-323 

 in grana and stroma, 361-362 

 interpretation, 392-394 

 relation to sensitization, 545-548 

 yield, 546-547 

 Fluorescence of phycobilins, 402, 417 

 Formaldehyde, Chl-sensitized formation, 



89, 90-94 

 decomposition by plants, 257, 260 

 energy, 48-49, 218 

 feeding to plants, 257-260 

 formation by silent discharges, 83 



from CO2 in vitro, 79, 82, 83 



from Chi, 91 



from percarbonate, 289 



from phosgene and bicarbonate by 

 H2O2, 79 

 hydrate, 53 



intermediate in PS, 48, 51, 247-248 

 occurrence in plants, 249, 253, 255-257 

 poison, 257-259 

 polymerization, 247, 259, 273 

 product of PO, 68, 267, 495^96 

 in rain water, 82 

 reaction with nitrate and nitrite in light, 



87 

 stimulant, 343 

 Formic acid, biosynthesis, 218 

 effect on Chi bleaching, 488 

 energy, 184, 218 

 feeding to plants, 261 

 intermediate in PS, 51 

 occurrence in plants, 249-251, 253 

 production by bacteria, 110 

 reversible decarboxylation, 185 

 Four quanta theories of photosynthesis, 154, 



288 

 Free energy. See Energy 

 Free radicals, energy, 81, 217, 229-234 

 as intermediates in CS, PO, and PS, 80, 



233-239, 287, 293, 494-501, 515 



