Index. 



339 



Pentoses, 207, 208, 209, 210. 



" Peptide " linkage, 228, 260. 



Peptones, 233, 260. 



Peraldehyde, 80. 



Perfusion, method of investigating 

 intermediary metabolism, 303. 



Phenols, 146, 155. 



dihydroxy, 156. 



trihydroxy, 157. 



Phenylalauine, 222, 227. 



Phenyldiazonium chloride, 147, 149. 



Phenylhydrazine, 150. 



action on sugars, 196. 



Phenylhydrazones, 82. 



Phloridzin, 218. 



Phloroglucinol, 157. 



Phosphoric acid, 250. 



Phosphorus, estimation of, 36. 



identification of, 23. 



in plants, 324. 



Plants, chemical processes in, 319- 

 332. 



metabolism of, 268. 



nucleic acids of, 265. 



organic constituents of, 324. 



role in general economy of 



nature, 329. 



Polarization of light and acids, 161. 



Polypeptides, 228, 258, 264, 265. 



Potassium cyanide, 131, 133. 



ferrocyanide, 130. 



" Precipitin," 247. 



Prolamines, 231. 



Proline, 223, 227. 



Protamines, 230. 



Proteins, 219 et seq., 270. 



acid or alkali albumins yielded 



by, 259. 



alcohol soluble, 231. 



biological differentiation of, 



247. 



biological importance of chemi- 

 cal investigation, 247. 



classification of, 230. 



colour reactions of, 239. 



conjugated, 232, 248. 



derived, 233, 258-265. 



general properties of, 236. 



glyco-, 232, 256. 



haemoglobin, 256. 



hydrolysis of, 223. 



hydrolysis products of, 221, 259. 



Proteins, meta-, 233. 



methods for identification of 



individual, 241. 



nucleo-, 232, 248. 



phospho-, 233, 256. 



preparation of simple, 234. 



process of digestion of, 259. 



sclero-, 232, 236. 



simple, 230. 



sulphur content of, 242. 



utilization value of, 281. 



Proteoses, 233, 260. 

 Prussic acid, 131. 

 Purine, 254. 

 Pyrogallol, 157. 



Qualitative analysis, 22. 

 Quantitative organic analysis, 24 et 



seq. 

 Quantitative separation by solvents, 



14, 24 et seq. 



Racemic acid, 162, 167. 



Racemic acid forms, resolution of, 



175. 

 Reichert-Meissl value of fatty acids, 



187. 



Resorcinol, 156. 



Root-nodules, production of, 328. 

 Ruff's reaction, 204. 



Salicylic acid, 159. 



Salmine, 227, 244. 



Sandmeyer's reaction, 148. 



Saponification, 91, 98, 99. 

 value of fatty acids, 184. 



Sarcolactic acid, 160. 



Semicarbazide, 82. 



Serine, 222, 227. 



Sinigrin, 218. 



Sodium acetate, 93. 



Sodium compounds obtained from 

 malonic esters, 109. 



Solid substances, analysis of, 13. 



Solvents, determination of differ- 

 ences in temperature of, 39. 



elimination of, 25. 



use of, 14. 



Sorbite, 78. 



Soya-bean, enzymes in, 279, 302. 



Starch, 214. 



