1332 



BIOLOGICAL EFFECTS OF RADIATION 



Bacteria, mitogenetic radiation and, 929; 

 as detectors, 929; as senders, 941 

 photodynamic agents and, 1140 

 photosynthesis in, 1042, 1050 

 pigments of, 1032 

 relative sensitivity to radiation, 1133 



Bacterial toxins, irradiation of, 347 



Bacteriochlorophyll, 1032 



Bacteriological media, effects of radia- 

 tion, 1129 



Bacteriolysins, 366, 373 



Bacteriopurpurin, 1031 



Beer's law, 260 



Bergonie and Tribondeau, law of, 402, 

 411, 419, 421, 426, 429, 452 



Biological effects, and ionization, 87-122 



Black body, 135; absolute source, 140; 

 brightness of, 141; emission, 126, 

 137, 139; laws, 135, 136, 138; radia- 

 tion, 257 



Blackman reaction, 1032, 1040, 1041, 1043 



Blood cells, 633, 642, 644 



Blood pressure, 502 



Blood vessels, irradiation of, 481 



Body (general), irradiation of, 491 



Body system and organs, effects of 

 irradiation of, 473-539 



Bone and cartilage, irradiation of, 509; 

 teeth, 510 



Bud abscission, by X-rays, 976 



Bulbs, formation of, in re photoperiodism, 

 689 



Bunsen-Roscoe law, fungi and, 892; 

 motor responses and, 575, 597 



Calciferol, 323, 329-331 



Calcium, 647, 650; release b.y irradiation, 

 648, 650 



Carbohydrate, and anthocyanin forma- 

 tion, 1110 



Carbon arc, 184 



Carotcnoids, accompanying chlorophyll, 

 1102 

 influence of light on formation of, 1022 

 optical properties of, 1029 

 photosynthesis and, 1021 



Casparian rings, 830 



Chaetopoda, regeneration, 432; effects of 

 radium on, 435; effects of X-rays on, 

 435 



Chain reactions, 268 



Charge, surface, 640 



Chemical change, measurement, in a 

 photochemical process, 277 



Chemical kinetics, 266 



Chemiluminescence, 264 



Chlorophyll, addition compounds of, 

 1042; condition in chloroplast, 1093; 

 content, in re photosynthesis, 

 1035; effects of ultra-violet on, 1099; 

 fluorescence of, 1030, 1044, 1093; 

 infra-red absorption and, 843; molar- 

 extinction coefficient of, 1099; optical 

 properties of, (leaves) 779-787, 

 1027-1030; photoactivity of, 1099; 

 precursors of, 1018; role in photo- 

 synthesis, 1041; structure of, 1041; 

 yellow pigments accompanying, 1102 



Chlorophyll formation, effects of, dark- 

 ness on, 1097; light on, 1015-1021; 

 light intensity on, 735, 745; radia- 

 tion on, 1093-1108; ultra-violet on, 

 878; various factors on, 1101 

 in etiolated plants, 1095 



Chlorophyllogen, 1096; in etiolated 

 plants, 1097, 1098 



Chlorophylls, absorption spectra of, 1028 



Chloroplasts, condition of chlorophyll in, 

 1093 

 effect of light, on shape of, 834; on 

 formation of pigments in, 1015- 

 1022 



Chromosomal aberration, vs mutation, 

 1263 



Chromosomal alterations, induced, in 

 maize, 1297-1310; in other plants, 

 1281-1295 

 nature of, 1304 



Chromosomal breakages, and gene 

 changes, 1192; maps, 1182; and 

 mutations, 1221 



Chromosomal deficiencies, 1299 



Chromosomal interchanges, 1302 



Chromosomal inversions, 1297 



Chromosomal rearrangements, 1167, 

 1169; detection of, 1172, 1182; 

 origin of, 1176 



Chromosomes, compounding, 1169; frag- 

 mentation, 1169 

 influence of X-rays on disjunction of, 



1170 

 in maize, normal, 1297 



Vol. 1 contains pp. 1 to 676; Vol. 2, pp. 677 to 1330. 



