White Diarrhea 



291 



The following figure taken from the Storrs Experiment 

 Station Bulletin 68 shows diagrammatically how the infection 

 perpetuates itself from the hen to egg and the chick and 

 from the recovered chick back to the hen again. 



Recently Rettger ^ and others have shown that healthy 

 adult fowls may become infected both by contact with 

 infected fowls and through infected litter. This adds 



'^"S0S 



Fig. 62. 



Showing how bacillary white diarrhea perpetuates itself in the 

 breeding stock. (After Rettger and Stoneburn.) 



another means by which the infection can be spread through 

 the flock. 



In this connection it is worth pointing out that Smith 

 and Ten Broeck ^ have found that the bacillus of fowl 

 typhoid shows very many points of resemblance to B. 

 pullorum. The only differences found between these bacilli 

 are in respect to their ability to ferment the sugars, dextrose, 



1 Rettger, Kirkpatriek and Jones, loc. cit. 



2 Smith, T.,and Ten Broeck, C, "A Note on the Relation between 

 B. -pullorum (Rettger) and the Fowl Typhoid (Moore). Jour. Med. 

 Research, Vol. 31, pp. 547-557, 1915. 



