POLYTOMELLTCAECA. 18, 34, 35 



POMEGRANATE, 124. 126 



PONGO PYGMAEUS, 84 



POPULUS TREMULOIDES. 105 



PORCELLIO LAEVIS, 199, 206 



PORIPHERA, 152 



PORK, products, 93, 106, 107, 109, 110 



PORPHYRINS, 15, 213 



PORPHYROPSIN. 155 



POTAMOBIUS TORRENTIUM, 230 



POTASSIUM, absorption, retention of. 147; 

 dally allowances of. 48-74; deficiency of 

 and reproduction, 164; deficiency signs of, 

 167, 169, 171; in synthetic diets for in- 

 sects, 92; excretion of. 147, 214; in ferti- 

 lizers, 102-104; in foodstuffs, 117, 119, 

 121; functions if, 166; metabolism of. 

 152; in milk. 111; as nutrient, 6, 32, 33, 

 40, 41; and soil pH, 172; toxicity signs of, 

 167 



POTASSIUM SALTS, in synthetic diets, 92; 

 in inorganic fertilizers, 102, 103; in 

 balanced solutions for culture media, 94- 

 100 



POTATO. 75. 76, 85, 87, 93. 105, 114, 120, 

 121, 123, 130, 142, 144, 233. 234 



POULTRY. 93. 107. 110 



P. P. FACTOR (See NIACIN) 



PRAIRIE HAY. western. 136, 139 



PRASEODYMIUM, 148 



PREGNANCY, 75, 76; nutrient allowances 

 duri,ng, 61, 62, 64, 65, 67, 70. 71; and 

 nutrient deficiency, 164 



PRIMATE(S). 84, 85, (See also specific pri- 

 mates) 



PRIMROSE, evening, 105 



PRINGSHEIM'S MEDIUM, 99 



PRIVET, 233 



PROBASCIDEA, 88 



PROCYON LOTOR. 82, 83 



PRODENIA ERIDANIA, 26 



PROLINE, in culture media, 100; excretion 

 of, 210; metabolism of, 180-188; as nu- 

 trient, 23. 24, 35-37; in proteins, 131 



PROMETHIUM, 148 



PRONGHORN. 86 



PROPANE. 18 



PROPANOL. 34, 35, 180, 216, 221 



PROPIONIBACTERIUM (SPP.). 175, 221 



PROPIONIC ACID (See PROPANOL) 



PROPYLENE, 18 



PROSTATE, 164, 229 



PROTACTINIUM, 148 



PROTEASE, 182 (See also specific proteases) 



PROTEIN(S), (See also specific proteins), 

 absorption of. 177; daily allowances of, 

 48-74; brain. ZZ; calorie value of, 145; 

 deficiency of and reproduction, 164; in 

 insect diets, 22, 91; digestible, 32; 

 digestibility of, 143; digestion of, 177; in 

 feedstuffs, 134-137; in foodstuffs, 112- 

 115; metabolism of, 182. 183, 186, 188; 

 in milk, 1 1 1; as nutrient, 22. 32; pro- 

 duction of by plants. 128-130; sources of. 

 93; in tropical and sub-tropical fruits, 

 124, 125 



PROTEOLYSIS, 177, 178 



PROTOEOSES, 177 



PROTEUS (SPP.), 37, 47 



PROTHROMBIN, 160 



PROTOGEN, 15, 20 



PROTOHEMIN, 15 



PROTOPLASM, 5, 6 



PROTOPORPHYRIN, 15 



PROTOPTERUS AETHIOPICUS, 198. 204 



PROTOTHECA ZOPFII, 34, 35 



PROTOZOA, 7-20, 152. 201. 208. 230. 232. 

 253. 264 



PRUNE(S). 114. 120, 121, 123, 129 



PRUNUS-. americana domestica. (See PLUM); 

 -armeniaca. (See APRICOT); -avium. (See 

 CHERRY); -cerasus, (See CHERRY); 

 -laurocerasus. 233; -persica, (See 

 PEACH) 



PSALLIOTA (SPP. ), 44, 238 



PSEUDOMONAS (SPP. ). 16. 19, 175, 240 



PSEUDOPEZIZA RIBIS, 44 



PSEUDOPLEURONESTES AMERICANUS, 

 198, 204 



PSEUDOSARCOPHAGA AFFINIS, 26, 30 



PSEUDOVITAMIN B,,, (See COBALAMIN) 



PSIDIUM GUAJAVA, (See GUAVA) 



PTERIDOPHYTA, (See FERN) 



PTEROIC ACID, (See FOLIC ACID GROUP) 



PTEROYLGLUTAMIC ACID, in diets for in- 

 sects, 92; excretion of. 212; functions, 

 deficiency and excess signs of, 159; as 

 nutrient, 10; stability of, 140 (See also 

 FOLIC ACID GROUP) 



PTINUS TECTUS (See BEETLE) 



PTYALIN, 178 



PUBERULIC ACID, 216 



PUFFER, 198, 204 



PUGETTIA PRODUCTA, 230 



PUMPKIN, 114, 120, 121, 123, 235 



PUNICA GRANATUM (See POMEGRANATE) 



PURINE(S), 12, 17, 101.. 181-183, 211; 

 -COMPOUNDS, 14, 101, (See also 

 specific purine compounds); -NITROGEN, 

 202-208 



PURPURA APERTA, 150 



PUTRESCINE, 15, 47, 180 



PYRAUSTA NUBILIALIS (See BORER, 

 EUROPEAN) 



PYRIDINE COMPOUNDS, 17. (See also 

 specific pyridine compounds) 



PYRIDOXAL, 10, 11; -phosphate, 11, 47, 

 161, (See also pyridoxine group) 



PYRIDOXAMINE, 92, 100, 161, 162, 212, 

 (See also PYRIDOXINE GROUP) 



PYRIDOXINE, 32, 42-45, 92, 97, 98, 100, 

 161. 162. 212. (See also PYRIDOXINE 

 GROUP) 



PYRIDOXINE GROUP, daily allowances of. 

 48-74; deficiency of and reproduction, 

 164; functions, deficiency and excess 

 signs of, 161, 162; in milk. 111; as 

 nutrient, 29, 30, 46. 47; sublllty of, 140 



PYRIDOXIC ACID. 212 



PYRIMIDINE(S). 12. 16. 17, 34, 35. 101. 

 181-183 (See also specific pyrimldine 

 compounds) 



PYRONEMA (SPP.). 44 



PYRROLE. 193 



PYRUS, -communis, (See PEAR): -malus, 

 (See APPLE) 



PYRUVATE, production of by fungi, 216; as 

 growth factor, 15; metabolism of, 42-45, 

 ISO, 184-186, 188-190; as nutrient, 34, 

 40, 41; - carboxylase, 165; -decarboxyl- 

 ase. 189 



PYRUVIC ACID, (See PYRUVATE) 



PYTHIOMORPHA (SPP.), 39, 44 



PYTHIUM (SPP.), 39, 44 



PYTHON (SPP. ), 197, 203 



QUERCUS ALBA, 105 

 qUINIC ACID, 15 



RABBIT, 79, 107. 110. 151. 164. 179. 222- 

 225, 227, 229, 244 



RACCOON, 82, 83 



RADICULA NASTURTIUM AQUATICUM, 113, 

 116, 117, 122 



RADIOACTIVE ELEMENTS. 148 



RADISH. 97, 105, 114, 120, 121, 123, 234 



RADIUM, 148 



RADIX AURICULARIA, 230 



RAFFINOSE, 25. 26. 38-41 



RAISIN(S). 83. 114. 120, 121, 123, 129 



RAM, 229 



RANA (SPP.). 197. 204 



RAPHANUS SATIVUS (See RADISH) 



RASPBERRY, 114, 120, 121. 123 



RAT. 8. 23. 67. 69. 79. 90. 146. 151. 153. 

 154. 222-227, 229. 244, 250; germ-free, 

 68 



RAULIN-THOM MEDIUM. 215 



RAVENELIN, 218 



RED-GROUPER, 198, 204 



REDOX CATALYSIS, 154 



REDTOP, grass, 105; -hay, 136, 139 



REDUCTASE, 191 (See also specific reduc- 

 tases) 



RENNIN, 177 



REPRODUCTION, nutrition and, 154, 164 



REPRODUCTIVE TISSUES, 229 



REPTILIA, 197, 203 (See also specific reptiles) 



RESPIRATION RATES, plants. 2 33-239 



RESPIRATORY, enzymes. 191; -pigments. 153 



RESPIRATORY QUOTIENTS, 230, 233-239. 254 



RETICULOCYTE(S), 222 



RETICULOGEN, 101 



RETINA, 155, 227 



RETINENE REDUCTASE, 155 



RHAMNOSE, 25, 26 



RHEUM RHAPONTICUM, (See RHUBARB) 



RHINOCEROS, (RHINOCEROS BICORNIS), 88, 



89 

 RHIZOMES, 234 

 RHIZOPHLYCTIS ROSEA, 39 

 RHIZOPOGON ROSEOLUS, 44 

 RHIZOPTERIN, 11 

 RHIZOPUS (SPP.). 10. 44. 216 

 RHODNIUS PROLIXUS 

 RHODODENDRON (SPP.). 105, 233 

 RHODOPSIN, 155, 160 

 RHODOTORULA (SPP. ), 41, 44 

 RHUBARB, 114. 120, 123 

 RIBAZOLE, 11 



RIBES(SPP.), 113, 118. 119. 122 

 RIBOFLAVINE. daily allowances of. 48-74; 

 loss of in cooking, 142; in culture media, 

 100; deficiency of and reproduction, 164; 

 excretion of, 212; in feedstuffs, 133, 138, 

 139, 164; in foodstuffs, 109. 110. 122, 123; 

 In fruits, 126, 127; functions, deficiency 

 and excess signs of, 162; in milk, 111; 

 as a nutrient, 10, 29, 30, 32, 46. 47. 92; 

 production of, 128-130; selected sources 

 for, 93; stability of, 140; -phosphate, 162 

 RIBOFLAVINE-ADENINE-NUCLEOTIDE, 162 

 lUBONUCLEIC ACID. 92. 153 

 RIBOSE. 25. 26. 40. 41. 183 

 RICCIA FLUITANS. 237 

 RICE. 84, 93, 105, 114. 120. 12'. 123. 135, 



144 ' 



RICHTER'S MEDIUM. 99 

 ROBBINS' SOLUTION. 32. 95 

 ROBINIA PSEUDOACACIA. 105 

 "ROBISON ESTER". 185 



RODENT(S). 69. (See also specific rodents) 

 ROOTS. 168-171. 234 

 ROSE. (ROSA HYBRIDA). 105 

 ROSELLINIA ARCUATA. 39. 44 

 ROUGHAGE(S). 144 

 ROUS SARCOMA. 226 

 RUBIDIUM, 6. 147 

 RUBROFUSARIN. 218 

 RUBUS GLAUCUS. 124, 126 

 RUBUS (SPP.), (See BLACKBERRY AND 



RASPBERRY) 

 RUGULOS. 218 

 RUGULOSIN, 218 

 RUMEX CRISPUS, 233 

 RUMINANT(S). 16, 17, 19, 32, 132. 150. 151, 



(See also specific ruminants) 

 RUTABAGA, 115, 120, 121, 123 

 RUTHENIUM, 148 

 RUTIN, 10, 11 



RYE, 105, 115, 120, 121, 123. 130. 135. 

 138, 235 



SABOURAUDITES (SPP.), 44 



SACCHARIC ACID, 217 



SACCHAROMYCES (SPP.). 10, 13, 41, 44, 98, 



220, 238, 253, 254 

 SACCHAROMYCOIDES (SPP. ), 41 

 SACCHARUM OFFICINARUM, 130 

 SACCOBOLUS DEPAUPERATUS, 44 

 SAINTPAULIA lONANTHA, 105 

 SAKI, 84, 85 

 SALICIN, 40, 41 

 SALICYLIC ACID, methyl. 216 

 SALSIFY. 97 



SALIVARY AMYLASE. 178; -gland, 223 

 SALMON. 11. 74, 108, 110 

 SALMONELLA (SPP.). 37. 47 

 SALT SOLUTIONS. (See SOLUTIONS) 

 SAMARIUM. 148 

 SAN DIEGO ZOO; diets used In. 82-90 



377 



