400 



INDEX 



Pyocyanase, Ivtic acition, 177 

 Pyocyanin, 177, 388, 391 



— as hydrogen acceptor, 202, 391 

 Pyracin, 113 

 P3rridme-3-nitrile, 106 

 Pyridine-3-sulphonamide, 140, 149 

 Pyridine-3-sulphonic acid, 146 

 Pyridino-protein enzymes, 52 

 Pyridoxal, 110 

 Pyxidoxamine, 110 

 Pyridoxine, 100, 109 



— acetyl derivatives, 110 

 Pyrimidines, as growth factor, 102 



— from nucleoproteins, 60, 332 



— utilisation of, 219 

 Pyrithiamine, antibacterial activity, 



151 

 Pyruvic acid, 245, 284 



anaerobic dismutation, 248 



breakdown, 247 



carboxylation, 259 



decarboxylation, 241, 271, 272, 



273 

 ■ detection, 466 



— — fixation of, 246 

 Pyruvic oxidase, 212, 248 



occurrence, 43 



prosthetic group, 43 



Quinhydrone electrode, 12 

 Quinic acid, 389 

 Quinine, 125, 128, 130 



— inhibition of lipase, 135 



oi Plasmodium respiration, 151 



Quinone pigments, 386 



in oxidation-reduction systems, 



393, 394 



Racemiase, 321 

 Raffinose, 349, 350 

 Ravenellin, 306, 396 

 Reductase, 193 



— acetaldehyde, crystalline, 41 

 Residual antigens, 353 

 Respiration, definition, 187 

 Rhizohium, fixation of nitrogen, 214, 



223 



— growth factors for, 104, 120 



— leguminosarum, fixation of nitro- 



gen, 223 



Rhizohium, polysaccharide, 348 



cross reaction with pneumo- 



coccus antisera, 348 

 Rhizojpus chinensis, 282 



— lactic acid production, 321 



— oryzce, lactic acid from, 282, 293 

 Rhodobacillus i^alustris, 357 

 Rhodococcus, pigment of, 387 

 Rhodopin, 389 

 Rhodopurpurin, 390 



Rhodotorula ruber, growth factor for, 



102, 120 

 Rhodovibrin, 389 

 Rhodovibrio, pigments of, 389 

 Rhodoviolascene, 389 

 Riboflavin adenine dinucleotide as 



hydrogen acceptor, 204 et seq. 



— as growth factor, 99, 111 



— in yeast, 339 



- — 5-phosphoric acid, in enzymes, 42 

 Ribonuclease, crystalline, 41 

 Ribonucleic acid, 334 



in Gram staining, 337 



Ribose-3-phosphate, 333 

 Robison's ester, 264 

 R-salt-azo-diphenyl-azo-egg albumin, 



449, 454 

 Rubrofusarin, 396 



Saccharic acid, 285, 298, 299 

 Saccharomyces cerevisice, fixation of 

 nitrogen by, 215 



Gram staining, 337 



synthesis of proteins by, 339 



— growth factors for, 101, 104, 105, 



110, 121 



— pulcherrimus, pigment of, 388 

 Salicylate, antagonism to panto- 

 thenic acid, 153 



Salmonella paratyphi, amino-acid de- 

 gradation by, 232 

 carbohydrates of, 362 



— schottmulleri, 232, 362 



— typhimurium, 360. 402 



— — action of sulphonamides on, 140 

 Salvarsan, 124, 127 



Sarcina aurantiaca, 387, 390 



— lutea, 387, 390 



— methanica, 76 

 — ■ xanthine, 390 



