292 



SUBJECT INDEX 



Malt, 13, 26, 42, 105 



Malus, 62 



Malva, 91 



Master reaction, 229, 244, 246, 247 



Maturation, 119 



Maximum angle, 45-49 



MCS (meter-candle seconds), 166 



Meristine, 223 



Mesocotyl, 21, 29, 82-84, 86, 87, 100 



Mesophyll, 66, 100, 227 



Messengers, chemical, 3 



Meta-xenia, 17 



Micelles, 125-127, 150 



Microorganisms, 71, 72, 235-238 



Micropotometer, 53 



Midrib, 227 



Mimosa, 19 



Molecular weight, 112, 113 



Monstrosities, 8 



Morphogenesis, 7, 119 



Mouse, 70, 233 



Moving picture camera, 51 



Nana, 86, 87, 211 



Narcosis, 97, 99 



Nastic movements, 181-182 



Native growth hormone, 113, 114, 146 



Negative curvature, 42, 44 



Negative osmosis, 120 



Nematus capreae, 8 



Nerve, 10 



Nicotiana, 56, 62, 69, 91, 97, 212, 227, 



228, 231 

 Nodes of grasses, 161 

 Nodules, see root nodules 

 Nutrition, 9, 183, 207, 208 



Oestrin 1 



Oestriol \ see Theelin 

 Oestrone J 

 Orchids, 17, 228 

 Organ formation, 2, 8, 16, 230 

 Organization, 119, 242-2U 

 Organizer, 242-244 

 Osmotic pressure, 120 

 Ovary, 17, 67, 228 

 Oxidase, 86 



Oxidation of auxin, 58, 86, 88, 106, 

 146, see also Inactivation 



Pachysandra, 204 

 Papaver, 123 

 Papaya, 186 



Papihonaceae, 19 



Partition coefficient, 106 



Pasadena, 49, 50 



Passiflora, 227 



Paste, see Lanoline 



Pathology, 222, 227 



Pea test, 40, 53-56, 133-139 



Pectin, 124, 127 



Pepsin, 70, 105 



Peptone, 111, 112, 184 



Perception, 11, 164-166, 171 



Pericycle, 198, 218, 221, 222 



Permeability, 120, 128, 136, 153, 154, 



172 

 Peroxide, 58, 105 

 Petiole, 175, 202, 212, 228 

 pH, 40, 106, 130-134, 143, 160, 161 

 Phaseolus, 160, 165, 171, 208, 217, 



218, 222, 225, 226, 227 

 Phloem, 91, 185, 190, 217 

 Photosynthesis and auxin formation, 



66, 213 

 Phototropic hormones, 114, 153 

 Phototropism, 10, 14, 28, 53, 91-94, 



152-156, 166-178, 245, 247 

 Phycomyces, 113, 170, 172 

 Phytohormones, 3, 232, 233, 236, 248, 



249 

 Phytophthora, 238 

 Pisum, 54-56, 82, 85, 88, 97, 141- 



149, 180, 187-189, 191, 197-201, 



203, 210-220, 231, 237 

 pK, 106, 130, 131 

 Plagiotropic, 181 

 Plant unit, 41-43 

 Plasmoptysis, 120 

 Plasticity, 120-124, 150 

 Plumula, 60, 84 

 Poa, 8 

 Polarity, 2, 3, 9, 90-10^, 146, 147, 155, 



157, 183, 185, 186, 214, 225, 230, 



242 

 Polarizing microscope, 125 

 Polar transport of hormone, 92-104, 



156, 159, 186, 188, 191, 215, 220, 



240, 241 

 Pollen, 63, 190, 191, 211, 212, 223, 



228 

 Pollen-hormone, 228 

 Pollinia, 17, 62, 63, 223, 228 

 Polygonum, 77, 211, 231 

 Populus, 61, 185, 219, 224, 226 

 Positive curvatures, 26, 42-^5 



