580 



HADIATION JUOLOGY 



rhroinosoiiu's, riiiK, loss of. 2()2 2(V.\ 



X. 252- 25:^. 2(17, 277 



XX. 252 



V, 258 

 Chromospljoro, '.)7 

 Chronic exposure to radiation, W,], 310, 



311 

 Ciliata, 286-289, 291-292, 297, 302, 305, 



310, 316, 320, 321 

 Cis-trans isomerization, 31-33 

 Classical rosonanoo, 13 

 Cleavage delay, 295, 29() 



by beta radiation, 298 



role in, of eentrosoine, 305 



of nucleus and cytoplasm, 304-307 



time course of, 298-302 



by ultraviolet radiation, 298, 300 302, 

 304, 305, 307 



by X rays, 298-302, 304, 305 

 Coagulation of protoplasm by radiation, 



286, 287 

 Colchicine in pollen tube cultures, 254 

 Collisions, intermolecular, 11 



multiple impact with solvent mole- 

 cules, 14 

 Colloid osmotic pressure, 411 

 Colorimetry, 207, 239 

 Colpidium, 292, 295, 310, 316 



colpoda, 367 

 Comparison eyepiece, 224 

 Complexion, 552 

 Coprinus Jimetarius, 432 

 Corneum, 489-494, 497, 501, 509-510, 

 516, 551 



sterol in, 494 

 Corona, 97, 99 

 Cyanide, 432 

 Cyclotron, 368-370 

 Cysteine, 33 7n. 



cytochemical test for, 218 

 Cystine, cytochemical test for, 218 

 Cytochemistry, absorption laws, 204-210 



anomalous dispersion in, 231 



Beer's law, 206, 221 



fixation in, 234, 235 



Lambert's law in, 206, 230 



photometric analysis in. errors, 229- 

 236 

 technique, 225-229 

 Cytochrome c, specific absorption, 208 

 Cj'tological studies, 370 

 Cytoi)lasmic fac^tors, 359-360 

 Cytoplasmic particles, effect of radiation 

 on. 311. 312 



D 



Decomposition, photochemicil. of for- 

 maldehyde, 26-27 



Decomposition, photochcmic.-il, nf HI. 

 21 23 

 of H,S, 26 

 Degradation of excitiition energy, (i, 8 

 Denaturation of proteins. 33-.34 

 Densitometer, 236 

 DeoxyiH'ntose nucleic acid (D.\A), 

 amount per nucleus, 2!i7 239 

 Beer's law, 221 

 nucleal reaction for, 217 

 specific absorption, 208 

 Deoxyribomiclease, 214, 216 

 Deoxyribonucleic acid (DXA), 384, 389, 

 400, 411 

 (See also Deoxypentose nucleic acid) 

 Deoxyribose nucleic acid (see Deoxy- 

 pentose nucleic acid) 

 Dennatological lore, 552 

 Dermatologist, 557 

 Dermis, 488, 490 

 corium, 489 



dilation of minute vessels, 488 

 Detectors, fluorescent, 129 



converter, use with phototube, 129 

 magnesium tungstate, (luantum 



efficiency for, 129 

 sulfides, 129 



zinc silicate, binders for, 129 

 maximum excitation of, 129 

 quantum efficiency of, 129 

 photochemical, 132 



triphenylmethane dyes, ([uantum 

 yield. 133 

 temperature coefficient, 133 

 uranyl oxalate, quantum yield. 133 

 temperature coefficient, 133 

 photoelectric, 135 

 image orthicon, 142 



ultraviolet microscope, 142 

 use in idtraviolet spectroscopy, 

 142 

 photoemissive cell, 136 



current-voltage characteristic, 



138 

 precision, principal limitation of, 



136 

 spectral response, 138 

 threshold wave length, 136 

 photomultiplier cells, 139 

 amplification in, 139, 140 

 construction of, 139 

 power supply for, 140 

 response of, 140 

 time resolution, 140 

 variation in characteristics of, 141 

 "venetian-blind," 140 

 photovoltaic cell, electric circuits 

 for, 135 



