212 MICRO-ORGANISMS AND DISEASE [chap. 



surface of the mucous membrane is coated with grey or 

 3'ellowisli mucus, which under the microscope contains 

 numerous leucocytes and detached epithehal cells ; the 

 liver is congested and brittle, the spleen much enlarged, the 

 lungs are normal. In the heart's blood are present relatively 

 few bacilli, which are a little longer and thicker than in fowl 

 cholera ; the spleen contains the bacilli numerously, and 



Fig. 60— Film Si'ECimen of Intestinal :\Ilcus of a Fowl dead of Fowl 

 Ektelitis. Pure Culture of Bacillus of Fowl Enteritis. 



also the vessels of the liver ; the mucus of the intestine 

 contains the bacilli in almost pure culture. In cultural 

 respects the microbe resembles the bacillus of fowl cholera, 

 except that its colonies are disc-like when growing on the 

 surface ; further, that the microbe of fowl enteritis is more 

 cylindrical, and that in gelatine streak culture it grows much 

 faster and forms a broader, less translucent band than that 



