462 



INDEX OF SUBJECTS 



Van Ermengem's flagella stain, 53 

 Variola, 376 

 Vibrio, 5 



choleras, 345 



Deneke's, 352 



metchnikovi, 352 



of Finkler and Prior, 352 



tyrogenum, 352 



Vibrion septique (B. edematis), 275 

 Vincent's angina, 367 



spirillum, 367 

 Vinegar, 170 

 Violet, anilin-water gentian, 40 



gentian, 40 



methyl (pyoktanin), 78 



methylene. 43 

 Virulence, 202 



factors influencing, 202 



loss of, in cultures, 115 

 Virus, filterable, 13, 150, 368 

 Visibility of microscopic objects, 25 



by light and shade, 26*, 27* 



by quality of light (color), 28 

 Von Pirquet test, 309 

 Vulvo-vaginitis/ 252 



Warmth, 115 

 Wassermann test, 361 

 Water, bacteria, 178, 183 



cholera germs in, 187 



collection of samples, 100 



disinfection of, 182 



examination, 178 



filtration, 182 



intestinal bacteria in, 186 



Water, self-purification of 179 



storage of, 180 



typhoid bacilli in, 187 

 Watery solution of aniline dyes, 40 

 Weigert's stain, 59 

 Welch's bacillus (B. welchii), 276 



capsule stain, 51 

 Whooping cough, 296 

 Widal's test (agglutination), 211, 338 

 Wire, platinum, 31, 32* 

 Wolff hiigel's colony counter, 185 

 Wooden tongue (actino mycosis), 246 

 Woolsorter's -disease (pulmonary an- 

 thrax), 273 

 Wounds, 197 

 Wright's method for anaerobes, 125 



Xerosis bacillus, 295 

 Xylol, 55, 59 



Yeasts, 139,* 140* 

 Yellow fever, 368 



immunity, 369 



mosquito, 369* 



prophylaxis of, 370 



transmission of, 369 



virus, 368 

 Yersin's serum, 321 



Ziehl's solution (carbol-fuchsin), 46 

 Zwischenkorper (intermediary body), 



214 



Zygospore, 137 

 Zymogenic bacteria, 169 

 Zymophore, 211 



