INDEX. 785 



PAGE 



tion of, 470, 471 ; non-neutralization of endotoxin of, 

 by its specific bactericidal serum. 253 ; occurrence 

 of water, 472 ; resistance and viability of, 471 ; see 

 Cholera ; symbiosis with Anieba coli, 688 ; soluble 

 toxin, 475 ; specificity of, 24 ; toxicity of culture 

 filtrates 475 ; toxicity of killed cultures, 475. 



Vibrio metchnikori 10 



Virulence 88 



Increase of, in the presence of other micro-organisms, 

 31 ; influence of, on inflammatory reaction, 144 ; 

 relation of, to phagocytosis, 315 ; specialization of, 

 89 ; see different micro-organisms. 



Virulin 121, 338 



Wasp Poison, antitoxin for 203 



Wassermann reaction 2o4 



Antigen in, 285 ; technic, 280 ; value of, 290 ; in non- 

 syphilitic diseases, 291. 



Whooping cough (pertussis) 750-755 



Contagiousness, 753, 754 ; cultural characteristics and 

 pathogenicity of the influenza-like bacilli, 751 ; 

 immunity and susceptibility, 754 ; influenza-like 

 bacillus in, 751 ; influenza-like bacillus, relation to 

 whooping cough, 753 ; Micrococcus catarrhalis in, 

 550 ; micro-organisms in, 750 ; prophylaxis, 754 ; 

 pseudoinfluenza bacilli in, 565 ; serotherapy, 754 ; 

 virus, dissemination of, 753. 

 "Water-borne" epidemics; cholera, dysentery, typhoid. 



. .435, 457, 473 



Welch, hypothesis of 332 



Widal reaction 206, 225 



See Agglutination. 

 Wool-sorters' disease ; see Anthrax. 

 Wright's method of vaccination. 



Staphylococcus infections, 548 ; typhoid fever, 443, 

 444. 



Yellow fever 25, 711-720 



Acclimatization, question of, 719 ; altitude and mois- 

 ture, relation to, 715 ; Bacillus icteroides in, 712, 

 713 ; cold, relation to, 715 ; epidemiology, 715 ; 

 fomites, 714, 715 ; immunity, acquired, 714, 720 ; 

 importation by ships, 718 ; incubation period, 714 ; 

 mosquito theory of, 712 ; se also Stegomyia fas data ; 

 non-contagiousness of, 715 ; occurrence, 711 ; pro- 

 phylaxis and quarantine of,. 715, 716, 718, 719; 

 virus, filterability of, 714 ; virus, resistance of, 

 718 ; serotherapy, 720 ; susceptibility to, 719. 



Zob'precipitins 235 



Zootoxins 431 



Zwischenkorper, synonyms for 263 



Zymotoxic groups 222 



