PLATE VIT. 



a. The pseudo -diphtheria or Hofmann bacillus. Film 

 preparation of a serum culture. X 15CH. 



H~V K .^-'V, 



1 - v >>><"5L *^ J 



'/ > >-~ -L-<S 



Vincent's angina. Smear from exudation showing fusiform 

 bacilli (dark) and spirilla (light). X 2000. 



