298 



INDEX. 



Vaccination, 288 



V. 



w. 



Water, bacteria of, 134 



collection and examination of, 134 



bottle, 140 



filter, 136 



pathogenic bacteria in, 142 

 purity of, 134 



Watery solutions of aniline dyes, 194 

 Widal's agglutination test in typhoid 



fever, 238 

 Wire basket, 60 

 platinum, 108 



Z. 



Ziehl's carbol-fuchsin solution, 198 

 Zooglea, 210, 220 

 Zymose, 234 



ERRATA. 



The legend for Fig. 18 should read "Culture Dish." 



In legend of Fig. 40, and third line below, read for " Sedgwick-Turner," " Sedgwick-Tucker." 



For Fig. 66, substitute 



FIG. 66. POLAR, BIPOLAR, 

 AND EQUATORIAL GERMI- 

 NATION OF SPORES. 



