SUBJECT INDKX 



585 



Medium, effects of irradiated, 292, 294- 



297, 299 

 Melanin, dopa, 506 



reduced Icuko form, 505 

 Melanin formation, 505 



water-extractable sulfhydryl com- 

 pounds, 506 

 Melanization, 504, 506, 519 

 melanotactic, 518 

 pigment migration, 502 

 Mercury arc, corex D filter of, 495 

 intermediate-pressure, 495 

 low-pressure, 495, 496, 531 

 pyrex filter of, 495 

 radiant flux, 495 

 Mercury-arc radiation, 529, 532 

 Mercury lamps, amalgam, 88-90 



depreciation of killing effectiveness, 66, 

 67 

 affected by starting, 66 

 high- and low-pressure, 55 

 high-pressure, 87 

 characteristics, 86 



conversion factors, output, in- 

 tensity, exposures, 59 

 depreciation, 66, 86 



solarization, 88 

 intensity variation with distance, 



61-63, 87 

 line intensities, 47, 86, 87 

 specification of ultraviolet intensity 



in research, 88 

 starting and restarting, 87 

 life of, affected by length of operat- 

 ing period, 66 

 low-pressure, 55-57 

 characteristics, 56, 57 

 efficiency of 2537 A production, 58 

 line intensities, relative, 60 

 low intensity, inherent, 55, 58 

 output increase by forced operation, 



58 

 ozone by 1849 A, 60, 65 

 operation of, temperature and venti- 

 lation, 65 

 radiation use, 60 



absorption by mercury vapor, 63, 



64 

 air absorption negligible, 67 

 average intensity in space, 63 

 calcvdation of intensity, 58, 62 

 conversion factors, output, inten- 

 sity, exposures, 59 

 reflector materials, 63, 64 

 relative line intensities, 47, 60 

 specification of ultraviolet intensity 



in research, 60, 61 

 variation with distance, 61, 62 



Metachromasia, 215, 216 

 Metastable state, 7-9 

 Metastasis, 535 

 Methyl green, 216, 239 

 Methylcholanthrene, mutagenic effect, 

 432 

 sensitization to light bj-, 442 

 Mice, albino, 530-532, 535 

 body, well-furred parts, 536 

 ears, 533-534 



hairless, 536 

 epidermis, 501 

 paws, 536 

 snout, 536 

 strain A, 534, 551 

 tail, 536 

 Microincineration, 211 

 Millon reaction, 208, 218, 219, 239-240 

 Mineral content of Paramecium, effect 



of X rays on, 293 

 Mitosis, inhibition of, 367 

 Modification of radiation effects, by 

 electrical stimulation, 304 

 by starvation, 304, 308, 309, 318 

 by temperature, 299, 300, 304, 317, 



318 

 by various substances, 293-296, 304, 



315 

 by visible light, 294, 304, 306 

 Moisture content, 391 

 Monochromator, 226 

 grating, 152 



angular dispersion of, 152 

 diffraction order of, 152 

 prism, 149 



constant deviation, 150-151 

 construction of, 150 

 double monochromators, 150 

 fluoride, characteristics of, 149 

 liquid-filled quartz, 149 

 quartz, characteristics of, 149 

 transmission of, 149 

 Morphology, cellular, 404 



colony, 404 

 Motility and behavior of protozoa, 286, 



288, 316, 317, 320 

 Mucor dispersus, 437 

 genevensis, 433, 443 

 guilliermondi, 433 

 Multiplication, cell, 287, 288, 290, 303, 



311 

 Multitarget theory, 369 

 Mutagenic effects of transmutation, 314 

 Mutagenic substrates, 413 

 Mutagens, chemical, 414 

 Mutants, biochemical, 404 

 K, 411 

 resistance to antibiotics, 412 



