CHAPTER XII 



EXPERIMENTS ON FOWLS 



I. I HAVE already mentioned in Chapter IX. that 

 several experiments of subcutaneous inoculation of 

 fowls were carried out with blood or spleen tissue of 

 the Orpington fowls, dead naturally from fowl 

 enteritis. Altogether eight fowls were thus in- 

 oculated ; four of these were ill on the 5th-6th, four 

 on the 6th-7th day, being quiet and off their food and 

 having diarrhcea ; five died on the 7th, two on the 

 8th, and one on the 9th day. The post-mortem 

 appearances were in all these animals the same, and 

 such as have been already stated. The bacilli were 

 demonstrated in every one of these in cover-glass 

 specimens, and in cultivations of the heart's blood, the 

 spleen tissue, and the intestinal mucus. 



2. Two fowls were inoculated with the blood or 

 spleen tissue of one of the above experimental fowls 

 that had died of the disease after inoculation ; the 

 result was exactly the same as above. 



3. Inoculations of fowls were also made with 



