458 Subject Index 



Methylcholanthrene, 260, 269, 270 

 N-Methvlcolcliicamide, 411 

 Methvlcokhicine: see Deniccokin 

 ()-Methvlethcis, 160 

 y-Methylphenanthrene, 161 

 N-Methyl-propyl-colchicamide, 411 

 Micrasterias tliomasianas. 119, 124 

 Microchemical tests, 127 

 Micrococcus oureus. 121-22 

 Micromiclei, 97, 412 



in liver, 237 



in tnmor cells, 259 

 Microscopic tests, 368-70 



average diameters, 369 



guard cell size, 369 



microspores, 369 



pollen grains, 369 



triploid grains exception, 369 



in watermelon, 369 

 Microspores, 110-15 



c-meiosis. 111 



c-mitoses, 110 



hexaploid, 1 1 1 



octo]3loid, 1 1 1 



polyploid, 1 14 



tetraploid, 11 1 



tetraploid monad. 112 



luitreated, 1 11 

 Miscible pool, 197 

 Mitochondria, 72. 89, 91 



shortened outside pseudospindle, 96 

 Mitoses; see also Mitosis 



intestinal, 376 



"late," 193 

 Mitosis: see also Colchicine mitosis 



abnormalities spontaneous in 

 malignant cells, 258 



activity in kidney of rat, 239 



analysis of colchicine upon. 17 



Arbacia eggs in, 74—75 



arrest of, 26. 27, 28, 36, 43, 44, 45. 89, 

 186, 237, 276 



arrested, in pancreatic glanil. 177 



bipolar nuclear, 31 



cell division not synonymous with, 87 



cellidar proliferation, 375 



chemicals acting upon, 17 



chromosomal fdjers of, 67, 81-83 



chromosome, without cellidar. 69 



chromosome changes like normal 

 luiclear, 50 



colchicine, 21 



comparison of colchicine meiosis 

 and colchicine, 112 



continuous fibers of, 67, 81-83 



crop-sac of pigeon, 228 



cycles of, 68 



cytological standards to measiue 

 chemical action on, 86 



discovery of, 188 



distributed colchicine, 205, 429-43 



thinnal variations, 221 



duration of, 216, 217. 218, 221, 236, 



246, 259 

 duration of colchicine, in animal 



cells, 48 

 effect of colchicine on course of, 60 

 endocrine gland, during poisoning 



by carbon tetrachloride, 248 

 fibers of, 67 



fibroblast cidtures showing, 30, 215 

 glutamate and, 223 

 graphic representation percentage 



of stages of, 30 

 grasshopper neuroblastic cells in, 71-73 

 ilial epithelium of male rat. 



percentage of, 222 

 index of, in pregnant guinea pig, 



230-32 

 inhibiting action upon. 31 

 interphase of, 232 

 liver, during carbon tetiachloride 



poisoning, 248 

 mechanism to account for colchicine, 



391-421 

 metaphase of, changed bv colchicine, 



35-50 

 methods for culturing pollen to 



study, 385 

 neuroblast metaphases of, 66 

 nuclear, 24 



nimrber of visible, 235 

 optical anisotrojjic spindle fillers of, 



75-76 

 Pernice's study of, 17, 18 

 pituitary, 222 

 pluricentric, 203 

 pollen tube, 37, 385 

 jirogressive acciuiiidation of arrested, 



'215 

 prophase, in tissue cidture, 215, 217 

 prophase of, 31-35 

 pseudo, 393 

 repartition of, dining bone repair, 



247 

 return to bipolar, 38, 55, 94-96 

 reversibility of a colchicine, 91-93 

 seminal vesicle dose and, 234 

 Siredon arrested, 48—49 

 sleep, action, 221 

 spindle mechanism of, and 



colchicine, 65-97 

 spleen of Siredon arrested first se3n, 



42 

 stage of, treated in neuroblast, 70 

 stages of, in root tips, 34 

 stimulation of, 216, 217, 242, 244 

 study of, 374-75 

 techni(]ue with animals in siikU of, 



374-80 

 timing upset of, 85 

 thyroid of guinea pig, 229 

 topogiaphy of growth, 375 

 Tradescantia staminal hair cell, 73-74 



