SECTION III. 



« 



DISEASES OF THE BRAIN AND NERVOUS SYSTEM 



Abscess within the Substance of the Brain — Hydrocephalus, or Dropst oi 

 the Brain — Stomach Staggers — Apoplexy, or Cerebral Hemorrhage — 

 Apoplexy of Spine, or Spinal Hemorrhage, producing Paraphlegia — 

 Epilepsy, or Fits — Tetanus — Vertigo — Acute or General Disease of th« 

 Brain, known as Encephalitis — Sleepy Staggers — Cerebral Meningitis- - 

 Chorea, or Stringhalt. 



Abscess within the Substance of the Brain. 



THE author, having some doubts about the curability of abscers 

 within the brain, can not offer the reader much encourage- 

 ment as regards the cure; yet, for the purposes of research, and in 

 view of prosecuting our Samaritan-like calling on a noble and 

 valuable animal, it is proper that the reader be put in possession 

 of the facts in the case. The symptoms and morbid conditions 

 connected with various forms of brain disease are, at the present 

 state of our knowledge, very obscure. Even in human practice, the 

 authorities contend that the subject of symptoms and conditions is 

 full of uncertainty and apparent irregularity. Doubtless there is 

 some constant and uniform connection of cause and effect between 

 the altered physical states of the brain and the altered manifesta- 

 tions of its functions, but we have not yet been successful in our 

 starch after those settled relations, nor have we but partial and 

 imperfect glimpses of them. 



Causes. — It is probable that the same causes which produce 

 abscess in other parts of the body, not clearly traceable to local 

 injuries, are operative in regard to the brain. Abscess is, as a 

 matter of course, always preceded by an active stage, known a? 

 inflammatory, and when not called into existence by local injury, 

 must depend on both predisposing and exciting causes. The pre- 

 disposition lurks in breed, and the exciting causes may be among 

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