126 Veterinary Medicine. 



ting, injuries by bullets and otherwise. In these cases, as 

 noticed under concussion, there may be two points of injury 

 (and two abscesses) one, in the seat of the injury, and one in 

 a deeper part of the brain, at the opposite wall of the cranium. 

 Again abscess may result in the brain from extension from a 

 similar process going on in the vicinity. Thus otitis extends 

 through the middle and internal ear to the brain, and its start- 

 ing point may have been more distant, namely, in the Eustachian 

 tube, or pouch, or in the pharynx. 



The symptoms yary according to the size of the abscess, the 

 rapidity of its formation and the amount of attendant congestion. 

 In the common cases resulting from strangles, I have usually 

 found the animal down, unable to rise, blind, amaurotic, with 

 dilated pupils, congested mucous membranes, and occasional 

 spasmodic movements of the limbs, neck and head. The symp- 

 toms may, however, vary through hyperaesthesia, irritability, 

 drowsiness, giddiness, stupor, local or general paralysis with oc- 

 casional spasms or convulsions. There may be an initial shiver- 

 ing, and a rise of temperature, yet as pressure on the brain in- 

 creases it may become normal or subnormal. In circumscribed 

 abscess the symptoms may be much less severe, not perhaps ex- 

 ceeding irritability, drowsiness, and some paresis or local 

 paralysis. 



In some such cases one can trace the connection with some pri- 

 mary disease, (traumatic injuries to the cranium, abscess of the 

 dipliie or sinus, parasites in the sinus, otitis, or pharyngeal dis- 

 ease) which serve as an indication of the true state of things. 

 In others there may be circumscribed local manifestations (anaes- 

 thesia, hypersesthesia, hemiplegia, paralysis of special muscular 

 groups, or spasms of the same) which may indicate more or less 

 accurately the exact seat of the lesion. When well defined, this 

 localization of the resultant phenomena, serves to distinguish this 

 and other local lesions, from meningitis which is apt to be much 

 more general in its diffusion. In the carnivora and omnivora 

 vomiting is a marked symptom. 



Treatment of brain abscess is usually hopeless, yet the at- 

 tendant inflammation may be met as in other cases of meningitis. 

 If the seat of abscess can be ascertained surgical interference is 

 fully warranted. 



