152 DISEASES OF THE BRAIN AND NERVOUS SYSTEM. 



Creatmcnt. 



This in such a severe affection must be prompt. It is advis- 

 able to bleed from the jugular vein, as directed in a preceeding 

 chapter, taking about eight ounces of blood from a full-grown 

 sheep. This should be followed by a cathartic. In this case 

 Epsom salts are useful; give four ounces in half pint of warm 

 water, to which one drachm of Jamaica ginger should be added. 

 When the animal affected is of sufficient value to warrant par- 

 ticular care, it should be confined so as not to injure itself during 

 delirium and given one drachm doses of bromide of potassium 

 every two or three hours. 



post-I^Iortcm Hppearances. 



The lungs will be found congested, the blood vessels in the 

 brain much distended, in some eases being ruptured, the blood 

 oozing into the brain substance. 



Hpoplcxy. 



This is an intense congestion of the blood vessels of the 

 brain, with rupture and more or less hemorrhage. This disease 

 is most frequently caused from the plethoric condition. It gen- 

 erally occurs in hot weather and where sheep are grazed on rich 

 pastures. It is more frequently met with in the sheep than the 

 ox, Youatt explaining this as being due to the less perfect heat 

 regulating power of the former animal and it'^ being more forced 



in feeding. 



Symptoms. 



The attack is always sudden. The sheep falls to the ground 

 in an unconscious condition, sometimes froths at the mouth, the 

 eyes are dilated and prominent, the animal often seeming to be 

 blind. In the commencement of the attack, instead of falling 

 down, the sheep may stand still in one spot, apparently oblivious 

 to its surroundings, and on being compelled to move falls over 



