CHAPTER II 



SYMPTOMS AND PATHOLOGY 



It must be obvious that in a disease affecting birds 

 that cannot be kept in captivity for any sufficient 

 time, the accurate and systematic observation of the 

 symptoms of the disease is fraught with great diffi- 

 culties, and it is therefore impossible to give a con- 

 nected account of the course of the disease. From 

 what I can gather of shrewd and observant keepers, 

 and what I myself observed on the grouse in 1887 

 while staying on the moors in Ayrshire and in Cum- 

 berland, thanks to the editor of the Field, and the 

 kind and generous hospitality of Mr. G. Bailey 

 Worthington, then holding Blairquhan, and of the 

 late Sir Frederick Graham of Netherby Hall, on 

 the borders of Cumberland, and also from what I 

 observed of ammers and other birds experimentally 

 infected with the disease in the laboratory, I fully 

 agree with Dr. Farquharson that the grouse disease 

 is an acute infectious fever — being, in fact, an acute 



