DIPHTHERIA. 



293 



Fig. 10. 

 Copied from a photo-micrograph ; amplification 1000 diameters 



which develops into long slender bacilli upon the 

 surface of the tonsils, etc., when for any reason 

 they are denuded of their superficial epithelium. 

 The writer, while pursuing certain experimental 

 investigations in Baltimore (1881) received, from 

 Dr. H. C. Wood, material from the fauces of 

 patients suffering from diphtheria, and also from 

 scarlet fever patients, and made photo-micrographs 

 of the micro-organisms found in the various speci- 

 mens. 



In the specimens marked " scarlet fever mate- 

 rial," slender filaments, containing endogenous 

 spores, were found, which correspond with those 

 described by the writers named as peculiar to diph- 

 theria. (See Fig. 10.) 



Letzerich differs from other German observers 



