INDEX OF SUBJECTS 



541 



von Pirquet and Schick's 

 studies of serum 

 sickness, 427 et 

 seq. 



von Pirquet's tuberculin 

 skin reaction, 440 

 Placentar cytotoxin, 92 

 Plague, active prophylactic 

 i m m u n i zation 

 against, 486 

 Besredka's vaccines in, 



487 

 Haffkine's early work 



on, 486 



Kolle and Otto's in- 

 vestigations i n, 

 487 

 Rowland's vaccine in, 



487 

 Strong's investigations 



in, 487 



relative susceptibility of 

 man and animals 

 to, 53 



serum therapy of, 478 

 Dean's serum in, 480 

 Lustig's serum in, 480 

 Markl's serum in, 479 

 Rowland's serum in, 



480 



value of, 480, 481 

 Yersin. Calmette and 

 Borrel's investi- 

 gations in, 478 

 Yersin's serum in, 478- 



480 



value of, 479 

 "Plasmines," 72 

 Pneumococcus infection, 

 relative suscepti- 

 bility of man and 

 animals to, 54 

 Pneumococci, mutation of, 



472 



Pneumonia, agglutination 

 reaction in diag- 

 nosis of, 221 

 serum therapy in, Cole's 



work on, 475 

 Dochez and Gilles- 

 pie's work on, 475 

 nature of action in, 



474, 475 

 Neufeld and Haendel's 



work on, 474 



Poison-ivy, specific anti- 

 toxin from, 96 

 Pollantin, 435 

 Poliomyelitis, relative sus- 

 ceptibility of man 

 and animals to, 

 55 



Polyceptors (Ehrlich), 156 

 Precipitation, 248 



inhibition zones in, 162 

 Precipitin reaction, 248 

 against heated proteins, 



258 et seq. 

 coctoprecipitin in, 258 

 experiments on, 260- 



262 

 h e a t-alkali-precipitin 



in, 259, 260 

 native precipitin in, 



259 



70 precipitin in, 259 

 Schmidt's experiments 



on, 260, 261 

 agglutination reaction 

 analogous to, 

 263 

 analogy of, to colloidal 



flocculation, 265 

 autocytotoxins in, 263 



Precipitin reaction, bac- 

 terial precipitins 

 in, partial or 

 minor, 252 



specificity of, 251, 252 

 Ehrlich's conception of, 



264 

 electrolytes in, effect of, 



265 

 forensic blood test in, 



257 

 ring test of Fornet and 



Miiller in, 257 

 group reactions of bac- 

 terial precipitins 

 in, 251, 252 

 diagnostic value of, 



252 



heat precipitins in, 259 

 heated precipitating ser- 

 um, effect of 

 mixed sera in, 

 266-267 

 protective action of, 



266 

 inhibition zones in, 265, 



266 



isoprecipitins in, 255 

 medico-legal value of, 



254 



non-specific partial reac- 

 tions in, elimina- 

 tion of, 254 



Nuttall's experiments on 

 determining zoo- 

 logical classifica- 

 tions by, 254, 255 

 organ specificity in, 262, 



263 



precipitinogen in, 249 

 chemical nature of, 



249 

 effect of heating on, 



258 



non-protein, 249, 250 

 obtaining of. 249 

 precipitinoids in, for- 

 mation of, 265 

 precipitins in, delicacy 



of, 253 



determination of po- 

 tency of. 253 

 inactivation of, by 



heat, 264 



effect of, in bac- 

 terial filtrates, 264 

 production of, against 

 unformed p r o- 

 teins, 252, 253 

 methods of, 251 

 of specific, 249 

 by pepton, 251 

 effect of heating 



on, 249 



in animal sera by 

 foreign protein, 



248 

 structure of (Ehrlich). 



264 

 zymophore group in, 



264 

 effect of heat on, 



265 



quantitative proportions 

 in, effect of, 265, 

 266 



relative concentration of 

 reacting bodies a 

 factor in, 265, 266 

 residue antigen and an- 

 tibody in, 267 et 

 seq. 



explanations of, 268 

 et seq. 



Precipitin reaction, residue 

 antigen and anti- 

 body in, experi- 

 ment on, 269 

 salts in, effect of, 265 

 species determination by 

 means of, 253, 

 254 



species specificity in, 262 

 specificity of, 248, 253, 



254 



vegetable proteins deter- 

 mined by, 255 

 zoological classifications 

 by means of, 254, 



Precipitin tests, methods 

 of performing, 255 

 et seq. 

 forensic blood test in, 



257 



ring test of Fornet 

 and Mtiller in, 257 

 Precipitinogen, 249 



chemical nature of, 249 

 effect of heating on, 258 

 non-protein, 249, 250 



nature of. 250 

 obtaining of, 249 

 Precipitinoids, 265 

 Precipitins, 248 



against heated proteins, 



258 et seq. 

 coctoprecipitin, 258 

 experiments on, 260- 



262 

 heat - alkali-precipitin, 



259, 260 



native precipitin, 259 

 70 precipitin, 259 

 Schmidt's experiments 



on, 260, 261 



bacterial, group reac- 

 tions in, 251 

 partial or minor, 252 

 specificity of, 251, 252 

 definition of, 90 

 delicacy of, 253 

 determination of potency 



of, 253 

 heat, 259 



in hemolytic serum, 94 

 inactivation of, by heat, 



264 

 effect of. in bacterial 



filtrates, 264 

 isoprecipitins, 255 

 organ specificity of, 262, 



263 



production of, 129, 249 

 against unformed pro- 

 teins, 252, 253 

 methods of, 251 

 specific, by pepton, 



effect of heating on, 



249 



in animal sera by 

 foreign protein, 

 248 

 "species," specificity of, 



262, 263 

 specific, 248 



discovery of, by Ru- 

 dolf Kraus, 248 

 structure of { Ehrlich), 



264 



zymophore group in, 264 

 effect of heat on, 265 

 Pregnancy, diagnostic 

 value of Abder- 

 halden's protec- 

 tive ferments in, 

 496 



