Index 



271 



mercuric chloride, as disinfec- 

 tant, 119 



meristematic function, retention 

 of, 58 



meristematic regions, 57 



meristematic tissues, 2 07, 215 



meristems, 44 et seq., 59 



meristems, intercalary, 48 



meristems, lateral, 48 



meristems, terminal, 50 



metastatic tumors, 221 



methionine, as impurity in leu- 

 cine, 100 



mica cover glasses, 150 



migration of cells, 148, 158 



migration rate of viruses, 200 



Moebius, 58, 125, 235 



mobility of cell surfaces, 11 



Molliard, 33, 47, 125, 235 



monocotyledonous plants, 94 



monosaccharides, 95 



morphogenesis, 3-12, 13, 14, 15, 

 209 et seq. 



mosaic diseases, 199-202 



motility of cells, 11 



Muckenfuss; Rivers, Haagen, 

 and M., 184, 259 



Mueller, 100, 156, 240, 260 



Musa seminifera, 45 



mustard, 55 



mustard roots, 105 



N 

 Nagao, 99, 245, 246 



nasal scissors, 82 



Naylor, 44, 125, 250; N. and 



Johnson, B., 44, 125, 250; N. 



and Sperry, 44, 125, 250 

 necrotic lesions, 194, 201 

 nerve fibrils, origin of, 183, 209 

 neuroblast, 21 

 niacin (see nicotinic acid) 

 nickel chloride, 105 

 Nicotiana, callus cultures, 53, 



207, 208, 214, 215, 223-226 

 Nicotiana glutinosa, 201 

 nicotinic acid, 97, 98, 100, 103, 



104, 105 

 nitrates, 112 

 nitrogen, 92 



nitrogenous materials, 93 



Nobecourt, 33, 34, 36, 50, 96, 97, 

 99, 218, 229, 233, 246, 260; N. 

 and Dusseau, 34, 199, 250 



nodules, bacterial, formation on 

 legumes, 199 



notebooks, 129, 168 



nucleated cells, cultivation of, 

 44 



nutrient concentrations, sensitiv- 

 ity to, 57, 185 



nutrient salts, 92, 93 



nutrients, 90 et seq. 



O 



oak, cultivation of cambium, 123 



oak, white, 55 



obligate parasites, cultivation 

 of, 194, 199 



Okado, 58, 250 



oligodynamic organic sub- 

 stances, 96 



omission of nutrient constitu- 

 ents, 110, 111 



optimum concentrations, 185 



optimum temperatures, 76 



orchids, undifferentiated em- 

 bryos of, 46 



organic complexes, in nutrients, 

 22, 90, 91, 100, 101 



organic materials, 93 et seq. 



organic nitrogen, 99 



organism as a whole, 7, 29 



Ornithogalum, 20 



osmotic agents, 94 



osmotic value, 57 



ovaries, cultivation of tissues 

 from, 57, 125 



Overbeek, van, 99, 210, 211, 

 246, 254; O. and Bonner, J., 

 99, 246; O., Conklin, and 

 Blake slee, 27; Blakeslee and 

 O., 220 



ovules, immature, cultivation of, 

 58 



oxygen, 92 



oxygen gradients, effect on dif- 

 ferentiation, 194, 218 



oxygen-hydrogen gradients, 217 



