CEREBRAL INJURY AND CHEYNE-STOKES RESPIRATION IN A HORSE. 



307 



On examining the brain a tumour the size of a hen's egg was found on 

 the left lobe of the cerebellum (see Fig. 24), extending from the extreme 

 outer margin of the left lobe to a point considerably beyond the middle 

 line. It resembled in shape a peg-top ; the point was thrust under the 

 right lobe of the cerebellum ; the body had replaced a large part of the 

 left lobe of the cerebellum. In substance it was moderately firm, 

 nodulated and encapsuled. Microscopical examination showed it to 

 be a glioma. On cutting through the central line of the cerebellum 

 a small haemorrhage was found at the base above the fourth ventricle. 

 On dividing the brain by successive slices another haemorrhage was 



sUi. s^XtxiWrfe^e. 



c^A^'3. 



Fig. 25. — Vertical section through brain about half an inch to the right of 

 the middle line. 



found at the point indicated in the figure, about half an inch from the 

 median commissure and in the right side. Haemorrhage was slight, 

 but the brain showed many small pink spots in this neighbourhood. 



Note. — The inability to co-ordinate movement was probably due to 

 the haemorrhage at the base of the cerebellum, the facial lesions to the 

 cerebral haemorrhage. The part played by the tumour appeared to be 

 secondary, as the growth had existed for a long time previously without 

 producing symptoms. 



Mr. Jno. A. W. Dollar's case, Veterinarian, 1896, p. 393. 



CEREBRAL INJURY AND CHEYNE-STOKES RESPIRATION IN 



A HORSE. 



8. A four-year-old brown gelding. 



History. — When hunting, came down at a fence and pitched on its 

 head ; for the rest of the day it did not jump as well as usual. Coming 

 home its action seemed exaggerated, the fore-legs being thrown out- 

 wards. It stopped as though to stale, but did not succeed ; it then 

 seemed to stagger and go wide behind. From this time it was led. 

 On arrival in the stable it was amaurotic, and stood with the head 

 against the wall. 



State on Examination. — Seemed in some abdominal pain ; lay on the 



