INDEX 



355 



Pressure (see also negath e pressure), in tissues. 14s. 

 251; as stimulus, 303. З'Ч ; developed in grow- 

 ing roots, 304, з'>5; negative, in stems, 106; 

 pressure, wounding and traetion, influence of, 

 on growth and configuration, 300-305 

 Prianischnikow, see Prianishnikov. 

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



Shulov, on asparagin formation, 177 

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



210 

 Pringsheim, E., Reizbewegungen, 253, 311, 312, 



316 

 Privet, 36, 221 

 Pro-chromogen, 223 

 Profile position, of leaves, 278 

 Prolin, 160 



Propagation, vegetative, 334 

 Protamins, 162 

 Proteinaceous seeds, 190 



Proteins, 155-163; determination of, 156, IS7; struc- 

 ture of, 159-163; synthesis of, 31, 38, 85, 170, 

 171, 178-181, 189; transformations of, 173; 

 transfer of, 149; hydrolysis and decomposition 

 of, 159-161, 166, 169, 170-174, I7S-I79, 185; 

 191. 200, 227; nitrogenous products of, 175- 

 178; in leaves, 284; in Plasmodium, 154; in 

 sap, 142; in seeds and seedlings, 184, 191, 192; 

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

 magnesium, 8s; in respiration, 227-229 

 Proteolytic enzymes, 166, 176, 185 

 Proteose, 158 

 Protochlorophyll. 18 

 Protonema, luminous, 27 

 Protophyllin, 13, 14 

 Protoplasm, alkalinity of, 189 

 Protoplasmic membranes, 106, 119 

 Prunus, 35 

 Prussian blue, 179 

 Psalliota. 222 

 Pteris, 302 



Pulling and Livingston, on water relations, 272 

 Pulvinus, of Mimosa, 317, 318 

 Pumice, 82 

 Pumpkin, 217, 313 

 Pure cultures, 43, 56; of root-tubercle bacteria, 76; 



of yeast, 59 

 Purievich, on photosynthesis, 25; on transfer of 

 organic materials, 150; on decomposition of 

 organic acids in plants, 188, 210; on respiration 

 ratio, 210; on respiration, 213 

 Puriewitsch, see Purievich. 

 Purin, 162, 163; bases, 175 

 Pyrenees, 324 

 Pyrimidin, 162, 163 

 Pyrogallol, 4, 31. 226, 259 

 Pyrrol, 12, 160 

 Pyrrophyllin, 13 



Quartz, 82, 167 

 Quinin, 38, 226 

 Quinone, 199, 2 



Rachis, 317 



Radiant energy, 14- 1 7, 



Radium. 169 



Raffinose, 17 



Raflesiacem, 47 



Ranunculus, 265 



Raphides, 299 



Rapp, see Albert, Büchner and R. 



Raulin, on nutrient media, 46, 87 



Reaction time, 294 



Receptive movements, 31'' 



Reducer, 207 



Reductase, 168, 207, 208, 226 



Reduction. 168, 207, 208, 225 



Reductor, 207 



Reed, on transpiration and chemicals, 139. (See 



also Schreiner, R. and Skinner.) 

 Regnault, calorimeter, 219; on carbon assimilation, 



3 

 Regulation, of enzyme action, 170 

 Reid, see Livingston, Britten and R. 

 Reinhardt, and Sushkov, on starch formation, 38. 



(See also Zaliesskii and R.) 

 Reinitzer, on respiration, 210. (See also Curtius 



and R.) 

 Reinke, on chlorophyll decomposition, greening, 

 photosynthesis and light, 23; on photosyn- 

 thesis, 30, 154; Theoretische Biologie, 154 

 Renard, see Klement and R. 



Renner, on osmotic solutions, 113; on transpira- 

 tion, etc., 1, 5, 138, 145, 147 

 Reproduction, 331-336; and development. 322-336 

 Reserve materials, 157. 158, 162, 185, 190, 229 

 Resin, 106 



Respiration (see also combustion, oxidation), xxviii, 

 38, 104, 168, 169, 171, 182, 184, 197, 198, 203, 

 210-215, 258, 259, 284; apparatus for measur- 

 ing, 215-217; anaerobic, 220-222; and fer- 

 mentation, Pt. I, Chap. VIII, 198-232; forma- 

 tion of water by, 217-218; liberation of heat 

 by, 218-220; materials consumed in, 227-230; 

 special cases of, 230-232; chromogens, 188, 

 222-223, 224, 226; enzymes, 2,22-223, 225, 226, 

 229, 230; pigments, 207, 233-226 j.ratio, 204, 

 210, 212-214, 219, 220 

 Resting cells, 155; period, 257 

 Reversibility of enzyme action, 16S 

 Rhone river, 55 

 Rhizomes, 327 

 Rhodophyllin, 13 

 Rhus, 166, 223 

 Rhythm, 275 



Ribbert, on transplantation and hormones, 329 

 Ricinus, 183, 191 

 Richter, A., see Rikhter. 

 Richter, О., on microchemical analysis, 9o;_on 



poison gases and geotropism, 297 

 Riesmüller, on ash analyses, 89, 90 

 Rigg, on bog water, 101 

 Rigidity, and tissue strains, 251 

 Rijn, van, on glucosides, 181, 187 

 Rikhter, A., on photosynthesis ami light, 25; on 

 death by freezing, 211; on zinc and copper in 

 Aspergillus nutrition. 87 

 Ripening, of potato tubers, 185 

 Rischavi, on respiration, 214 

 Ritter, on denitrifying organisms, 79; on giant 



cells of Mucor, 270, 300 

 Robin ia, 27, 77 



