354 



INDEX 



Pathogenic bacteria, 185, 186 



Pavetta, 78 



Pea, 73, 74, 76, 88, 94, 137, 161, 162, 168, 187, 222, 

 227, 255, 264, 283, 287, 314 



Peach, 190 



Pelargonium, 215 



Pelletier and Caventou, on chlorophyll, 6 



Penetration , of cells and stone by fungi , etc. , 1 26 



Penicillium, 79, 123, 171, 176 



Pentoses, 165 



Peptones, 44, 69, 159, 161, 162, 164, 176, 273, 302 



Perception, of contact stimuli, 315, 321, of geo- 

 tropic stimuli, 299; of phototropic stimuli, 283 



Periderm, of potato tuber, 106 



Periodic movements, of floral parts, 293 



Periodicity, in transfer of carbohydrates, 153; in 

 transpiration, 138; in growth, 277 



Permeability, of protoplasm, 119, 120, 272, 273, 320 



Peroxidases, 170, 226, 228, 229 



Peroxides, 170 



Peru, 325 



Petri dish, 61 



Petrograd, 258, 259 



Petrolatum, 107 



Petruschewsky, see Petrushevskaia. 



Petrushevskaia, on temperature and enzyme action, 

 172 



Pettenkoffer tubes, 218, 219 



Pfannenstiel, see Willstatter and P. 



Pfeffer, Osmotische Untersuchungen, 112; on 

 absorption of aniline dyes, 119; on selective 

 absorption, 121 ; on proteins and asparagin, 

 174; on respiration, 204; on respiration and 

 wounding, 216; on intramolecular respiration, 

 224; plant physiology, 3, 252; on day and 

 night movements of floral parts, 293, 318; on 

 pressures exerted by growth, 305, 306, 307; on 

 contact sensibility, 313; Pfeffer clinostat, 295; 

 osmotic cell, 112 



Pfingstberg, 56 



Pfliiger, on respiration, 204 



Phaeophytin, 14 



Pharbitis, 314 



Phaseolus (see also bean), 191, 249, 265, 279, 

 283, 313 



Phenol, 59, 208 



Phenological observations, 257, 258 



Phenol-phthalein, 101 



Phenyl-alanin, 163, 164 



Phloem, 152, 153 



Phosphates, 91, 205, 217, 230 



Phosphatides, 85; and lipoids, 186-188 



Phosphorite, 94-96 



Phosphorus, 3, 67, 82, 85, 89. 90, 93. 104, 157, 165, 

 177, 184, 186, 287 



Photographic paper, 292 



Photolepsy (see also Lichtgenuss) , 291 



Photometric sensitiveness, 278 



Photosynthesis, 3, 4; r61e of chlorophyll in, 19, 20; 

 r&le of carotin in, 19; products of, 28-32; in- 

 fluence of conditions on, 35-37; and light, 22, 

 28, 32-36, 215; and asparagin, 174; and cane 

 sugar, 189; and energy circulation, 235; and 

 etiolation, 285-287; and development, 286, 290 



Phototropism, 277, 278, 281, 282, 299; of flowers, 

 280; of leaves, 279, 280; of moulds, 281; of 

 roots, 281; of tendrils, 315 



Phycocyanin; 21; phycoerythrin, 21; phyco- 

 phffiin, 21 



Phyllocactus, 285 



Phyllocyanin, n 



Phyllophyllin, 14 



Phylloporphyrin, 12-14 



Phylloxanthin, 11 



Phylogeny, of plants, 304; of twining habit, 316 



Physiography, 276 



Physiological dryness, of soil, 100 



Physiology, xxxi, 276; the cell as physiological unit, 

 157 



Phytin, 188 



Phytoalbumins, 161 



Phytoglobulins, 161, 162 



Phytyl, in chlorophyll molecule, 8, 9, 14 



Picea, 326, 327 



Pickering, on toxins in soil, 99, 101 



Pieters, on tissue strains as stimuli, 304 



Pigments (see also respiration pigments), 21, 119, 

 120; accompanying chlorophyll, 19-21; comple- 

 mentary, 26 



Pilobolus, 281, 293 



Pine, 27, 243, 256 



Pisum (see also pea), 168, 187, 255, 281 



Pith, 153 



Pitsch, on nitrate fertilizers, 72; P. and van Haarst, 

 on nitrate fertilizers, 72 



Plagiotropism, 295 



Plant lice, 86 



Plasmodium, 157 



Plasmolysis, 114-116, 121, 244, 246 



Plaster, of Paris, 45, 125, 147, 305. 306 



Plastic materials, 152; transfer of, 133 



Plastiline, 135 



Plastin, 195 



Platinic chloride, xxxiii, 90, 166 



Plimmer, on proteins, 158, 165; P. and Scott, on 

 phosphoproteins, 165 



Podsol, 95, 96 



Poisoning, compared to nutrition, 230 



Poisons, 185, 216; and geotropism, 299; and nuta- 

 tion, 263, 264; and respiration, 229, 230; and 

 starch formation, 39; for enzymes, 173 



Polarity, 331 



Pollacci, on aldehyde in plants, 30 



Pollen, 336; chemotropism of pollen tubes, 335 



Polovtsov, on respiration of fatty seeds, 218 



Polygonum, 190, 284, 313 



Polymerization, 288 



Polymorphysm, of hay bacillus, 302 



Polypeptides, 164, 179 



Polyporus, 189 



Polzeniusz, see Godlewski and P. 



Poppy, 162, 194, 218 



Pores, diffusion through, 108, 109 



Posternak, on formation of oxymethyl-phosphoric 

 acid in leaves, 32 



Potassium, 73, 82, 88-90, 92, 104, 287; carbonate, 

 47; chloride, 84, 85; chloroplatinate, 90; citrate, 

 117; dichromate, 15, 23, 26; ferrocyanide, 91. 

 112; hydroxide, 4, 6, 28, 54. 159, 182, 219, 

 261; iodide-iodine solution, 28; myronate, 169; 

 nitrate, 82, 84, 113-117. 118, 122, 123, 211, 244; 

 permanganate, 26, 59", phosphate, 49; silicate, 

 47; sulphate, 87, 117, 118, 169 



