Subject Index 459 



Triton arrested, 4S 



Triturus arrested, 48 



veritable explosion of, Ifi 



\iscosiiv changes at, S9 

 Mitotic counts, 379 

 Mitotic index, 238, 378-79 

 Mitotic poisoning, 379, 391, 392 

 Mitotic poisons, 257 



mitotic stage, 81 

 Mitotic processes, 10 



bv colchicine, 378-79 



of kidney tubules, 193 



mitotic growth, 193 



mitotic stimidation, 193 

 Mixoploids, 384 

 Mixoploidy 



clones of diploid and tetraploid, 347 



diploid and tetraploid ])ollen 

 mother cells, 348 



LoUinu lyerenne, 347 



persistence of, 347 

 Molge, species of: uuninoyatd. 226, 227; 

 palinata Schneid, 210; jxiIdkiIiix, 

 210 

 Monads 



formation, 1 12 



replace tetrads, 1 12 



tetraploid, 112 

 Monaster expansion, 89 

 Mono-alcohol, 161 

 Mono-aldehyde, 162 

 Monocotyledons, 363 

 Monocytes, 188 

 Mononitro-colchicine, 169 

 Monoploid, 276, 321,333 

 Monosomic, 357 



analysis in Nicotiaiia. 358, 359 

 9-Monoxime, 163 



Monstrous development, in frog, 381-82 

 Montanae, 9 

 Mosaic resistance 



in tobacco, 284 



obtained by transfer, 284 

 Mucor, 123 

 Mucosa, 181 

 Multiple star, 83 

 Multipolar, 86 



Multivalency in polyploid, 308 

 Muscle, smooth, 181 



anaerobic glycolysis, 182, 183 

 oxidative activity, 182, 183 

 Muscle, striated, 180 



contractility of, 181 

 Mushroom, 6 

 Muskmclon, 325 

 Mustard gas, 91 

 Mutagens, 124, 275 

 Mutant 

 Mutation, 275 



in Ddturd stramon'nini . 354 



globe, 354 



a trisomic, 355 



Mycobacter'nuii tuberculosis, 122 

 Myelin, 246 

 Myelocytes, 188 

 Mvoblast cultures, 418 

 Mvxedema, 229 



N 



Naphthalene, 400 



Naphthalene acetic acid (XAA) , 86, 104, 

 109, 128 

 colchicine and, 128 

 threshold, 101 

 Narcosis, 111, 180, 396 

 c-tumor, 110 

 colchicine and, 402, 403 

 theory of , 399, 403 

 Narcotics, 392 

 Narcotin, 413 

 National Formulary, 156 

 National Institute of Genetics, Japan, 



332 

 Natural pohploids, discovery of 

 in Gossypiinn, spontaneously, 303 

 in grapes, 324 

 in Polygonatutn, 385 

 Necrotic factor in tobacco, 307 

 polvploidv breeding, 307-9 

 transfer from T. gluliiiosa, 307 

 Neoplasms 



in abdominal cavity, 377 

 lymphoid, in man, 264 

 hniphoid, in mouse, 262 

 malignant, in horse, 257 

 malignant, in man, 259 

 in man, 376-77 

 Neoplastic cells, 258-60, 378; see also 

 Cancer, Cancer chemolhcrap\. Car- 

 cinogenesis 

 experimental stiuh of, 258 

 gro^\'th in animals, 194, 255-69 

 Nephrectomy, unilateral, 237, 238, 241 

 Nerve cells 



colchicine mitosis in regenerating. 246 

 growth, 210 

 regeneration, 216 

 Nervous paralysis, 377 

 Nessberry, 324' 

 Neural tissue in chicks, 209 

 Neuroblasts of grasshopper 

 bleb formation, 91 

 Brownian movement, 89 

 delay in mitosis, 46 

 destruction of fibers in, 77 

 effecti\cness of colchicine on, con- 

 centration, 72 

 exploded metaphase in, 72 

 exposure time, 73 

 inhibition by colchicine, 34 

 mitochondria obser\ed in, 72 



mitotic stage treated, 70, 73 

 phosphorus, 89 



