Diseases of the Nervous System. 283 



recently-exuded fibrin, which also was spread over the 

 surface of the hemisphere. This portion of the brain was 

 somewhat diminished in bulk, but no morbid appearances 

 were observed in its structure ; in the centre of the left 

 corpus striatum a recent ha:morrhagic clot was found. 



" Under the microscope the exudation was found to 

 consist of ordinary inflammatory products, numerous pus 

 corpuscles, large exudation corpuscles, fat granules, and 

 fine white fibres." 



DEMENTIA. 



In April, 1883, a remarkable case of canine dementia 

 came under the author's notice, which originated in the 

 first sexual connection. The subject was a young well- 

 bred Scotch colley dog, belonging to Mr. Charnock, of 

 Wolverhampton, which the owner desired to mate with a 

 maiden female of the same breed. The following day, 

 after being together, cerebral disturbance was noticed in 

 the dog, indicated by much the same symptoms as when 

 the brain is involved in chorea. The pupils of the eyes 

 were remarkably contracted. Ultimately the patient be- 

 came perfectly blind, deaf, and dumb, and possessed very 

 little feeling. The evacuations intestinal and urinal were 

 involuntary. From a quick, intelligent, and lively dog, he 

 speedily became a poor demented creature. 



Almost immediately symptoms of cerebral mischief were 

 observed, his method of locomotion altered, and he per- 

 sisted in a slow shambling walk, with the baclc arched and 

 the head down, round and round the loose box which he 

 inhabited, in much the same manner as a tiger or hyaena, 

 to the latter of which he was frequently likened by specta- 

 tors. This he would do for hours at a stretch, sometimes 

 to the right, sometimes to the left, but always never swerv- 

 ing from the beaten track, and always keeping close to 



