300 CLINICAL VETERINARY MEDICINE AND SURGERY. 



great difficulty. The eyelids were swollen, the eyes discharging, 

 the mucous membranes injected, the pulse 48, respirations 24, tem- 

 perature 39*5° C. That evening the animal was greatly depressed ; it 

 even left its mash. Pulse 60 ; respirations 20 ; temperature 40*2° C. 



From the 9th to the 12th the condition became aggravated, and 

 the comatose symptoms more marked. The temperature varied be- 

 tween 40° and 41° C. Death occurred during the night between the 

 I2th and 13th February. 



Autopsy. — The lung contained several metastatic abscesses as large 

 as a hazel-nut, and a considerable number of smaller sized gangrenous 

 spots. The guttural pouches were full of a liquid grumous pus. On saw- 

 ing through the mesial line of the cranium its internal surface appeared 

 healthy, and the meninges of the brain were only slightly injected. 

 The left ear showed deep-seated suppurative otitis ; the middle ear was 

 full of foetid pus. In spite of the precautions taken during operation 

 the petrous temporal bone had been fractured and the wound infected. 

 Pus collected from the ear and from the pulmonary abscesses contained 

 streptococci. 



The tooth passed obliquely downwards and slightly backwards 

 through the entire thickness of the temporal bone. 



[An interesting article on dentigerous cysts will be found in The 

 Veterinarian for 1899, p. 309.] 



TUMOUR OF THE RIGHT HEMISPHERE OF THE BRAIN. 



2. A five-year-old entire horse, brought for examination on the 

 i8th August, 1896. For some time past this horse had shown signs of 

 " immobilite " (ventricular dropsy of the brain). It became useless for 

 work, no longer obeying the rein and stumbling over obstacles in the road. 



On first examining the animal we were struck by its peculiar 

 attitude. The head and neck were stiff; the neck was slightly concave 

 on the right side ; the head was inclined downwards and towards the 

 left. 



At rest the animal appeared unsteady on the limbs of the near side. 

 When alone in its box it brought the legs closely together, half flexing 

 the fore-limbs as though about to lie down ; then it began to turn 

 towards the right in an ever-decreasing circle until it pivoted on the 

 hind limbs ; finally it swayed and fell on the right side. It showed 

 great difficulty in rising, and had to be assisted. The hind limbs 

 appeared almost helpless. If the fore-limbs were crossed the animal 

 remained in this position, like a horse with " immobilite." 



It was quite unable to walk in a straight line, but continually turned 

 towards the right, and could not be made to trot, though it was able to 

 back with ease. The lumbar region was excessively sensitive, and 

 pressure over it caused the animal to fall. 



Vision was abolished in the right eye ; the eyelids were mobile ; the 

 pupil was dilated ; the various media of the eye showed no disturbance. 

 Examined with the ophthalmoscope, the papilla appeared markedly 

 hypersemic ; the vascular striae were very visible, especially towards the 

 margins. Hearing seemed less acute than normal. 



