466 



INDEX. 



Water, sterilization of, 142 



storage of, 140 



transmission of typhoid fever, 

 of cholera, of dysentery by, 176 



transportatiot;. of, for examina- 

 tion, 142 



typhoid fever bacilli in, 145 



well, contamination of, 139 

 Watery solutions of aniline dyes, 28 

 Weigert's stain for fibrin and bacteria, 



42 

 Welch's stain for capsules, 49 

 Whooping-cough, 171 

 Widal's serum-test for typhoid fever, 



376 

 Wire baskets, 77 



platinum, 22 



silver, 266 

 Wolffhugel plate, 144 

 Wool-sorter's disease, 137, 176, 334 

 Wounds, infected, 265, 181, 286 

 Wright's stain for blood, 47 



method for anaerobes, 91 

 Wurtz's culture-medium, 371 

 Wurzelbacillus (see Bacillus mycoides) 



Xerosis bacillus, 343 

 X-rays, 247 

 Xylol, 38, 41 



Yeasts, description of, 273 

 for class work, 115 

 in air, 137 

 Yellow fever, bacteria not the cause 

 of, 424 

 conveyed by mosquito, 440 

 destruction of mosquito of, by 

 sulphur dioxide, 255 

 by petroleum, 258 

 filterable virus, 172 

 microorganism unknown, 170 

 tubercle, 358 

 Yersin's serum for plague, 324 



Ziehl's carbol-fuchsin, 34 



Zinc chloride, sulphate, 258 



Zoogloea, 122 



Zomotoxic group of the amboceptor, 



222 

 Zymophore group of the amboceptor, 



