INDEX. 



467 



- toxin, 385 ; mouse ty- 

 phoid, 196. 



Jredineae, 271. 

 Urschleim, 4. 

 Ustilagineae, 271. 



Vaccination, 298, 299, 416, 417. 

 Vacuoles, 4, 6. 

 Variability, 21-23. 

 Vibrio, 23, 35, 36, 38 ; - 

 cholerae asiaticse, 19, 25, 36, 



rugula, 19, 29, 30 ; 



septicaemia, 307. 

 Virulence, diminution of, 301, 



427. 



Water, bacteria in, 63, 64. 

 Water-supply, 419, 420, 423. 



Yeasts, 116, 117, 127. 

 Yellow fever, 215, 243. 



Zoogloea, 14, 20, 21 ; ram- 



igera, 16. 



