EXPERIMENTS ON FOWLS 105 



fowls dead after inoculation from these fowls, but no 

 result followed — the rabbits remained alive. 



Rabbits were then injected subcutaneously with 

 broth sub-culture of the bacillus of fowl enteritis. 

 Altogether six rabbits were inoculated, each receiving 

 \ to I Pravaz syringeful of a culture twenty - four 

 hours old ; the same culture was tested on fowls and 

 proved virulent. Of the six rabbits five remained 

 well, the sixth was found dead on the fifth day. On 

 post-mortem examination both lungs were found much 

 congested, the spleen was dark and very slightly (?) 

 enlarged, the liver was slightly congested, no apparent 

 change in the intestine. Cultivations on gelatine were 

 made of the heart's blood and incubated. A very 

 limited number of colonies made their appearance. 

 Three drops of blood yielded altogether thirty -four 

 colonies, all of them typical colonies of the bacillus of 

 fowl enteritis. 



From this it is quite clear that fowl enteritis and 

 fowl cholera are two different diseases ; further proof 

 will be furnished later on by showing the behaviour 

 towards fowl cholera of rabbits that survived a first 

 inoculation with fowl enteritis. 



9. Guinea-pigs were also inoculated by injecting 

 them subcutaneously, some with blood and spleen 

 tissue of a fowl dead of fowl enteritis, others with 

 active broth culture of the bacillus of fowl enteritis. 



