INDEX. 



I 99 



V. 



Vaccination, 176 



Variation among bacteria, 35. 



'megar, 

 '"irulenc 



Vi 



Vin 



143. 

 Vis inedicatrix naturae, 187. 



51. 

 e of pathogenic germs, 140, 



W. 



Wine, bacteria in manufacture of, 

 50- 



Yellow milk, 72. 

 Zooglcea, 24. 



THE END. 



