INDEX 



315 



Pressure (see also negative pressure), in tissues, 133, 

 222; as stimulus, 273, 274; developed in growing 

 roots, 274, 27s; negative, in stems, 98; pressure, 

 wounding and traction, influence of, on growth 

 and configuration, 270-275. 



Prianischnikow, see Prianishnikov. 



Prianishnikov, on fertilizers, 88, 89, 90; P. and 

 Shulov, on asparagin formation, 162. 



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

 190. 



Pringsheim, E„ Reizbewegungen, 223, 276, 277. 

 280. 



Privet, 36» 201, 



Pro-chromogen, 203, 



Profile position, of leaves, 248. 



Proia i4S« 



Propagation, vegetative, 297* 



Protamins, I47> 



Proteinaceous seeds. I75> 



Proteins, 140-148; determinaiion of, 141, 142 ; struc- 

 ture of, 144-148; synthesis of, 31. 38, 78, iSS. 

 156, 163-166, 174; transformations of, 158; 

 transfer of, 137; hydrolysis and decomposition 

 of, 144-146, isif 154. 155-159* 160-164, 170, 

 176, 180, 207; nitrogenous products of, 160- 

 163; in leaves, 254; in Plasmodium, 139; in 

 sap, 130; in seeds and seedlings, z69> 176, 177; 

 in soil, 63; in root tubercles, 71; with magnes- 

 ium, 79; in respiration, 207-209. 



Proteolytic enzymes, isi. 161, 170. 



Proteose, 143. 



Protochlorophyll, 18. 



Protonema, luminous, 27. 



Protophyllin, 13, 14. 



Protoplasm, alkalinity of, 174- 



Protoplasmic membranes, 98. 11 1. 



Prunus, 35. 



Prussian blue, 164, 



Psalliota, 202. 



Pier is, 272- 



Pulling and Livingston, on water relations, 242. 



Pulvinus, of Mimosa, 281, 282. 



Pumice, 76. 



Pumpkin, 197. 278. 



Pure cultures, 41, 54; of root-tubercle bacteria, 72; 

 of yeast, 57- 



Purievich, on photosynthesis, 25; on transfer of 

 organic materials, 138; on decomposition of 

 organic acids in plants, i73» ^90\ on respiration 

 ratio, 190; on respiration, i93' 



Puriewitsch, see Purievich. 



Purin, 147, 148; bases, 160. 



Pyrenees, 286. 



Pyrimidin, I47. 148. 



Pyrogallol, 4, 31. 206, 229. 



Pyrrol, 12, 145. 



Pyrrophyllin, 13. 



Quartz, 76. 152. 

 Quinin, 38, 206. 

 Quinone. 179. 205. 



R 



Rachis, 281. 



Radiant energy, 14-17. 126, 260. 



Radium, 154* 



RafiSnose, 17. 



RafiesiacetB, 45. 



Ranunculus, 235. 



Raphides, 269< 



Rapp, see Albert, Buchner and R. 



Raulin, on nutrient media, 44, 81. 



Reaction time, 264. 



Receptive movements, 280. 



Reducer, 187. 



Reductase, iS3. 187. 188, 206. 



Reduction, 153. 187, 188. 205. 



Reductor, 187. 



Reed, on transpiration and chemicals. 127. (See 

 also Schreiner, R. and Skinner.) 



Regnault, calorimeter, 199; on carbon assimilation, 

 3. 



Regulation, of enzyme action, iSS- 



Reid, see Livingston. Britten and R. 



Reinhardt, and Sushkov, on starch formation, 38. 

 (See also Zaliesskii and R.) 



Reinitzer, on respiration, 190. (See also Curtius 

 and R.) 



Reinke, on chlorophyll decomposition, greening, 

 photosynthesis and light, 23; on photosyn- 

 thesis, 30, 139; Theoretische Biologic, 139. 



Renard, see Kl^ment and R. 



Renner, on osmotic solutions, 105; on transpira- 

 tion, etc., A 5i 126, I33i 135. 



Reproduction, 294-299; and development, 285-299. 



Reserve materials, 142, 143. I47f 170, 175. 209< 



Resin, 98. 



Respiration (see also combustion, oxidation), xxii, 

 38, 96, 153. 154. IS6, 167. 169, 174. 178, 183. 

 190-195; 228, 229, 254, apparatus for measur- 

 ing, 195-197; anaerobic. 200-202; and fer- 

 mentation, Pt. I, Chap. VIII, 178-212; forma- 

 tion of water by, 197-198; liberation of heat 

 by, 198-200; materials consumed in, 207-210; 

 special cases of, 210-212; chromogens, 173, 

 202-203, 204-206; enzymes, 202-203, 205, 206, 

 209, 210; pigments, 187. 203-206; ratio, 184, 

 190, 192-194. 199* 200, 



Resting cells, 140; period, 227. 



Reversibility of enzyme action, IS3. 



Rhine river, 53- 



Rhizomes, 290. 



Rhodophyllin, 13. 



Rhus, 151. 203. 



Rhythm, 245. 



Ribbert, on transplantation and hormones, 292. 



Ricinus, 168, 176. 



Richter, A., see Rikhter. 



Richter, O., on microchemical analysis, 84; on 

 poison gases and geotropism. 267. 



Riesmiiller, on ash analyses, 83. 84. 



Rigg, on bog water, 95' 



Rigidity, and tissue strains, 222. 



Rijn, van, on glucosides, x66, 172. 

 ' Rikhter, A., on photosynthesis and light, 25; on 

 death by freezing, 191 ; on zinc and copper in 

 Aspergillus nutrition, 81. 



Ripening, of potato tubers, 170. 



Rischavi, on respiration, 194. 



Ritter, on denitrifying organisms. 75! on giant 

 cells of Mucor, 240, 270. 



Robinia, 27. 73- 



Rockea, 115. 233. 234. 



