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BACILLI PATHOGENIC IN MAN. 



Bacillus typhi abdominalis. 



Eberth, Klebs, and Koch were able to demonstrate 

 in the spleen, lymphatic glands, and Peyer's patches of 

 patients suffering from typhoid fever, peculiar short, 

 plump bacilli which were not met with in other diseases. 

 According to Klebs, long threads develop from these 

 bacilli, and in these rows of spores are formed ; this 

 statement was not confirmed by the other two authors, 

 and probably rests on error owing to the accidental 

 presence of putrefactive organisms. Meyer and Gaffky 

 have subsequently confirmed Eberth and Koch's results. 

 Occurrence of Gaffky found the characteristic bacilli 26 times in 28 

 bacilli cases of typhoid fever investigated ; and recently similar 



Fig. 69. Typhoid bacilli ; section from spleen X 800. 



observations have been made by a number of investiga- 

 tors. This constant occurrence of the bacilli, which 

 are limited, as can be shown, only to typhoid affections, 

 renders it highly probable that they are causally con- 

 nected with the disease. 



The bacilli are present in the diseased parts of the 

 intestine, in the mesenteric glands, in the spleen and 



