372 



Section YI. 

 DISEASES OE THE NEEYOrS SYSTEM. 



TETANUS. j PAEALTSIS. 



APOPLEXY. I MEGEIMS. 



HYSTEEIA. 



PEELIMINARY KEMARKS. 



The plirase "tbe nervous system," a phrase we hear repeated 

 almost hourly, is one which if contemplated in all its numerous 

 and important relations will be found to embrace the most 

 comprehensive inquiries which physiological science can open 

 to the mind of man. 



The horse, like all other highly organised animals, is possessed 

 of " a nervous system," the structure of which is highly complex ; 

 and the uses of which are twofold : first, to place the animal 

 itself in intimate relation with the external world ; and secondly, 

 to place every member and every part of a member of his body 

 in intimate relation with every other member and part of a 

 member. 



"The nervous system," says Erasmus "Wilson, "maybe 

 divided for convenience of description into — 1st, the brain; 

 2nd, the spinal cord ; 3rd, the cranial nerves ; 4th, the spinal 

 nerves; and 5th, the sympathetic system." 



