INDEX. 



1349 



defines, relation of oleic acids to the, 



1229 

 Oleic acid, a constituent of human fat, 



1229-1230 



Olein (tri-oleiu) , preparation of, 1230 

 Ortho-dihydroxybenzene, 1279 

 Osazones, the, 1216 



formation of the, 1216 

 Ossein, 1199 

 Oxalic acid series, the, 1235 



,, ,, amido-acids of the, 1252 



Oxaluric acid, 1262 

 Oxy-hsemoglobin, preparation, 1291 



,, difference in crystals of , from 



different sources, 1291 

 ,, spectra of, 1292 



Oyster, presence of glycogen in the, 1213 



Palm oil, palmitin obtained from, 1230 

 Palmitic acid, 1228, 1230 

 Palmitin (tri-palmitin) , 1230 

 Pancreas, the amylolytic enzyme of the, 



1190 

 Pancreatic juice, its action on starch, 



1222, 1223 



Papa'in, elastin dissolved by, 1204 

 Para-dihydroxybenzene, 1280 

 Paraglobulin (serum-globulin), chemistry 



of, 1173 



Paramyosinogen, 1175 

 Parapeptone, 1178, 1179 

 Paraxanthiue, 1267 



,, isomer of theobromine, 1267 

 Pentose group, 1217 



,, in diabetes, 1217 

 Pepsin, preparation of, 1191 

 Pepsinogen, an antecedent of pepsin, 1191 

 Peptones, 1167, 1178 



,, preparation of, 1184 



,, their absorption and fate in 



the body, 1186 

 Petroleum-ether, 1272 

 Pettenkofer's reaction for bile-acids, 1289 

 Phenol, 1278 

 Phenylic acid, 1278 

 Phenyl-glucosazone, 1218 

 Phenyl-hydrazin, as reagent for the 



sugars, 1216 



,, in formation of osazones, 1216 

 ,, its action on maltose, 1223 

 Phenyl-lactosazone, 1224 

 Phenyl-maltosazone, preparation of, 1222 

 Phenyl-sulphuric acid, 1279 

 Phosphorus, its presence in casein, 1207 

 ,, a constituent of mucin, 1198 

 ,, percentage of in nuclein, 1206 

 ,, its presence in protagon, 1240 

 Pigments of the animal body, 1290 

 ,, humus, 1309 

 indoxyl-, 1310 

 retinal, 1312 



Pigments of urine, 1307 



,, ,, as affected by drugs, 1311 



of the suprarenal bodies, 1317 

 Piotrowski's reaction for proteids, 1166 

 Piria's reaction for tyrosine, 1276 

 Plants, occurrence of leucin in, 1244 

 ,, proteid metabolism of, 1253 

 ,, alkaloidal principles of, 1271 

 Propeptone, 1183 

 Propionic acid, 1226, 1232 

 Protagon, 1240 

 Protalbumose, 1184 

 Proteids, 1164-1189 



composition of, 1165-1187 

 crystalline, 1165 

 ash of, 1165 . 

 general reactions of, 1166 

 classification of, 1166 

 coagulated, 1167, 1177 

 digestive changes of, 1178, 1179 

 duplexity of molecule of, 1179 

 their decomposition by acids, 



1178, 1181, 1187 

 products of decomposition of, 



1186 

 ,, theories of the constitution of, 



1187 



Protogelatose, 1201 

 Pseudoxanthine, 1286 

 Ptomaines, the, 1284-1286 



,, their similarity to vegetable 



alkaloids, 1285 

 Ptyalin, preparations of, 1190 



,, its action on starch, 1190 

 Ptyalinogen, in saliva of horse, 1190 

 Purple, visual, 1313 

 Pus-cells, nuclein prepared from, 1205 

 Pus-corpuscles, presence of glycogen in, 



1213 



Putrefactive organisms, action on cellu- 

 lose of, 1215 

 Putrescin, 1286 

 Pyocyanin, 1317 

 Pyoxanthose, 1317 

 Pyrocatechin, 1279 



Rennet, milk-curdling ferment, 1194 note 



,, use of, in cheese-making, 1194 

 Rennin, its clotting action on milk, 1208, 



1194 



,, its enzymic nature, 1195 

 Renninogen, 1194 

 Reticulin, 1201 



Retina, pigments of the, 1312-1315 

 Rhodophane, 1313 

 Rhodopsin, 1313 



Rotation of light, mode of measurement 

 of, 1218 



Saccharose, 1221 



Saliva, ptyalin a constituent of, 1190 



