90 THE GROUSE DISEASE chap. 



SO were also the rabbits that had been inoculated 

 with the blood or spleen of the Orpington fowls. 

 All pigeons and rabbits remained alive and well. 

 The fowls that were so inoculated remained well for 

 the first four or five days, then they left ofT feeding, 

 became quiet, and showed diarrhoea of greenish-yellow 

 evacuations ; a day or two later they were found 

 dead, but in no case did they show the somnolence 

 characteristic of fowl cholera. I experimented on a 

 large number of fowls with blood and spleen tissue 

 of the Orpington fowls, or of fowls that succumbed 

 after inoculation from the Orpington fowls, also on 

 a very large number of fowls that I inoculated with 

 cultures of the blood or spleen tissue, dead from the 

 natural disease or after inoculation, and in no single 

 instance have I found any difference in the results, in 

 no single instance have I seen any such rapid course 

 as characterises fowl cholera. The earliest date at 

 which the animals showed illness was the fourth 

 day, and this, amongst a series of experiments com- 

 prising several dozens of fowls, occurred only once or 

 twice. Most animals remained well for the first four 

 days at any rate. Death in no single instance occurred 

 before the sixth day, in the majority of instances 

 during the seventh day, occasionally the eighth or 

 ninth day. On account of the enteric disturbance 

 being a prominent symptom, and to distinguish the 



