SUBJECT INDEX 



1333 



Chromosomes, in salivary glands, 1189 

 Ciliates, response to light, 581 

 Cleavage, effects of irradiation on, 394 

 Coagulation, of proteins by irradiation, 



319 

 Coefficient, defined, of correlation, 246; 



of variation, 238 

 Coelenterates, response to light, 586 

 Colloids, protoplasmic, 643 (see Proto- 

 plasm ) 

 Colonial forms, response to light, 582 

 Color vision, of Daphnia, 599; of insects, 



611 

 Competitive pairing, 1199 

 Composition of plants, as affected by 



Ught, 732 

 in re regions of spectrum, 771 

 Compton effect, 39, 101 

 Corpuscles, and waves, 2 

 Crossing over, cytological demonstration 



of, 1190; in rearrangements, 1198 

 Crown gall, inhibition of, by radium, 996 

 Curve fitting, 244-250; exponential, 247, 



248; straight line, 246 

 Cytological maps, 1182 

 Cj^tology, of green plants, effects of 



X-rays, 978 

 Cytolysis, by ultra-violet, 649; by visible 



light, 644 

 Cytoplasm, in re irradiation, 1283; 



sensitivity of, 627 



D 



Dark-growth response, 1075 

 Darkness, anatomical effects (plants), 

 830 

 effects on plants, 727; composition, 

 732; growth, form, and structure, 

 728; nitrate utilization, 736; stem 

 elongation, 737 

 Day-length, as ecological factor, 706 

 Death, cause of, in irradiation, 1317 

 Deficiencies, chromosomal, 1170, 1175, 

 1195; detection of, 1172 

 in maize, 1299; internal, 1301; ring 

 chromosomes, 1301; terminal, 

 1299 

 in re irradiation, 1292 

 Denaturation, of proteins by radiation, 



310, 314 

 Deradiation response, 999 



Vol. 1 contains pp. 1 to 676 



Detectors, absolute, 142 

 in mitogenetic radiation, bacteria, 929; 



onion root tips, 922; yeasts, 924 

 selective, 190; black body plus filter, 

 191; photochemical, 197; photo- 

 electric, 193-197 

 special, infra-red, 205; ultra-violet, 

 201; visibihty, 200 

 Deviation, defined, average, 233; stand- 

 ard, 233 

 Difflugia, response to light, 574 

 Diffraction, 8-10 

 Dissociation, heat of, 273 



of molecules, 255 

 Dormancy, in re photoperiodism, 691 

 Dosage, X-ray, in re mutational effect, 



1238 

 Dosemeters (X-ray), calibration of, 68 

 Duplication, chromosomal, 1170, 1175; 

 changes of genes in, 1195; detection 

 of, 1172 



E 



Ear, irradiation of, 506 

 Earthworms, response to light, 588 

 Einstein's law, 261 



Electric waves (short), in biolog^^ 541- 

 558; apparatus for, 550; biological 

 effects, 543; heat effects, 544; other 

 effects, 546; synthetic fever by, 545 

 Electron pairs, 4 



photons and, transmutation between, 41 

 Electrons, of internal orbits, 23 



photons and, 1-42 

 Electrostatic fields, (see Electric waves) 

 Embryonic cells, susceptibility, to 

 radium, 411 

 to X-rays, 411 

 Embryonic development, differential sen- 

 sitivity in, 401 

 effects of radiation on, 389-410; 

 cleavage, 394; fertilization, 391; 

 gastrulation, 396; later stages, 397 

 Emission, of light, 24 



black body, 126, 137, 139 

 continuous, sources of, carbon arc, 184; 



sun, 171; tungsten filament, 180 

 selective, sources of, 184 

 spectra, optical, 28; X-ray, 24 

 Emulsoids, 303; effects of radiation on, 

 309 



; Vol. 2, pp. 677 to 1330. 



