198 



MICRO-ORGANISMS AND DISEASE. 



tion or to septicsemic poisoning. Rodents, carnivorous animals, 

 and monkeys are altogether insusceptible to cholera. There is 

 direct evidence that the water contaminated with choleraic 

 evacuations only, and of course with comma-bacilli, when drunk 

 by a large number of persons did not produce cholera ; there 

 is no definite evidence that a cholera patient elaborates 

 cholera virus and passes it out with the evacuations. 





FIG. H. 



From a preparation of mucus flakes of the ileum of a case of typical cholera. 

 Comma bacilli and minute straight bacilli, singly and in masses. Three 

 lymph-corpuscles containing in their interior numerous small straight 

 bacilli. 



Comma-bacilli of various species have been discovered in 

 other diseases of the alimentary canal ; in the fluid of the mouth 

 of normal persons (Lewis) ; in old cheese (Denike). The 

 comma-bacilli found by Finkler and Prior in cholera nostras, 

 differ in mode of growth from Koch's comma-bacilli of cholera. 

 So do those found in diarrhoea due to other causes. But those 

 of the fluid of the mouth, and those in old cheese, are identical 

 with Koch's comma-bacilli in their mode of growth. 



