INDEX 



355 



Potato, 87, 102, 142, 160, 185, 188, 217, 283, 285, 

 327, 328 



Potonie, on morphology and paleontology, 304 



Pouget and Chouchak, on "soil sickness," 10 1 



Prantl, on guttation, 140 



Prazmovskii, on bacteria of root tubercles, 76 



Prazmowski, see Prazmovskii. 



Precipitation membranes, 112, 119, 245 



Precipitin, in rabbit, 333 



Presentation time, in geotropic response, 296 



Preserves, and sterilization, 54 



Pressure (see also negative pressure), in tissues, 145, 

 253; as stimulus, 305, 306; developed in grow- 

 ing roots, 306, 307; negative, in stems, 106; 

 pressure, wounding and traction, influence of, 

 on growth and configuration, 302-307 



Prianischnikow, see Prianishnikov. 



Prianishnikov, on fertilizers, 94, 95, 96; P. and 

 Shulov, on asparagin formation, 180 



Priestley, on gas exchange, 2, 3; on photosynthesis, 



213 

 Pringsheim, E., Reizbewegungen, 255, 313, 314, 318 



Privet, 36, 224 



Pro-chromogen, 226 



Profile position, of leaves, 280 



Prolin, 163 



Propagation, vegetative, 336 



Protamins, 165 



Proteinaceous seeds, 193 



Proteins, 158-166; determination of, 159, 160; struc- 

 ture of, 162-166; synthesis of, 32, 39, 8s, 173. 

 174, 181— 184, 192; transformations of, 176; 

 transfer of, 152; hydrolysis and decomposition 

 of, 162-164, 169, 172, 173, 177. 178-182, 188, 

 194, 203, 230; nitrogenous products of, 178- 

 181; in leaves, 286; in Plasmodium, 157; in 

 sap, 142; in seeds and seedlings, 187, 194, 19s; 

 in soil, 67; in root tubercles, 75. 76; with 

 magnesium, 85; in respiration, 230-232 



Proteolytic enzymes, 169, 179, 188 



Proteose, 161 



Protochlorophyll, 18 



Protonema, luminous, 28 



Protophyllin, 13, 14 



Protoplasm, alkalinity of, 192 



Protoplasmic membranes, 106, 119 



Primus, 35 



Prussian blue, 182 



Psaliiota, 225 



Pteris, 304 



Pulling and Livingston, on water relations, 274 



Pulvinus, of Mimosa, 319, 320 



Pumice, 82 



Pumpkin, 220, 315 



Pure cultures, 44, 57; of root-tubercle bacteria, 76; 

 of yeast, 59 



Purievich, on photosynthesis, 26, on transfer of 

 organic materials, 153; on decomposition of 

 organic acids in plants, 191, 213; on respiration 

 ratio, 213; on respiration, 216 



Puriewitsch, see Purievich. 



Purin, 165, 166; bases, 178 



Pyrenees, 326 



Pyrimidin, 165, 166 



Pyrogallol, 4, 31, 229, 261 



Pyrrol, 12, 163 



Pyrrophyllin, 14 



Q 



Quartz, 82, 170 

 Quinin, 39. 229 

 Quinone, 202, 228 



R 



Rachis, 319 



Radiant energy, 14-17. 138, 292 



Radium, 172 



Raffinose, 17 



Raflesiacece, 48 



Ranunculus, 267 



Raphides, 301 



Rapp, see Albert, Buchner and R. 



Raulin, on nutrient media, 47, 87 



Reaction time, 296 



Receptive movements, 318 



Reducer, 210 



Reductase, 171. 210, 211, 229 



Reduction, 171, 210, 211, 228 



Reductor, 210 



Reed, on transpiration and chemicals, 139. (See 



also Schreiner, R. and Skinner.) 

 Regnault, calorimeter, 222; on carbon assimilation, 



3 



Regulation, of enzyme action, 170 



Reid, see Livingston, Britten and R. 



Reinhardt, and Sushkov, on starch formation, 39. 

 (See also Zaliesskii and R.) 



Reinitzer, on respiration, 213. (See also Curtius 

 and R.) 



Reinke, on chlorophyll decomposition, greening, 

 photosynthesis and light, 23; on photosyn- 

 thesis, 30, 157; Theoretische Biologie, 157 



Renard, see Klement and R. 



Renner, on osmotic solutions, 113; on transpira- 

 tion, etc., 1, 5, 138, 145. 150 



Reproduction, 333-338; and development, 324-338; 



Reserve materials, 160, 161, 165, 188, 193, 232 



Resin, 106 



Respiration (see also combustion, oxidation), xxxii, 

 39, 104, 171, 172, 174, 185. 187, 200, 201, 206, 

 213-218, 260, 261, 286; apparatus for measur- 

 ing, 218—220; anaerobic, 223-225; and fer- 

 mentation, Pt. I, Chap. VIII, 201-235; forma- 

 tion of water by, 220-221; liberation of heat 

 by, 221-223; materials consumed in, 230-233; 

 special cases of, 233-235; chromogens, 191, 

 225-226, 227, 229; enzymes, 225-226, 228, 229, 

 232, 233; pigments, 210, 226-229; ratio, 207, 

 13. 215-217, 222, 223 



Resting cells, 158; period, 259 



Reversibility of enzyme action, 171 



Rhizomes, 329 



Rhodophyllin, 14 



Rhone river, 56 



Rhus, 169, 226 



Rhythm, 277 



Ribbert, on transplantation and hormones, 331 



Richter, A., see Rikhter. 



Richter, O., on microchemical analysis, 90; on 

 poison gases and geotropism, 299 



Ricinus, 186, 194 



Riesmiiller, on ash analyses, 89, 90 



Rigg, on bog water, 101 



