104 NERVOUS SYSTEM, 



/?. Into those of the nervous system of animal life, and 

 those of the nervous system of organic life. 



Q. How are the diseases of the animal nervous system 

 subdivided'? 



#. Into the diseases of the brain and those of the 

 nerves. 



Q. Then what is the division of the diseases of the 

 brain? 



#. Into the idiopathic or essential, and the symptoma- 

 tic or consequential. 



Q. What are the forms of inflammation of the brain? 



/?. They are acute and chronic; but as separate from 

 inflammation of the cerebral meninges little is known of 

 phrenitis. 



Q. In the collection of cerebral diseases given above, 

 which are the effects of inflammation ? 



/?. A softening, hardening, scirrhus, effusions of blood 

 and serum, and head-ache, and formations of pus. 



Q. After apoplexy, what- parts are most liable to hemi- 

 plegia? 



#. The face and extremities; the trunk is seldom affect- 

 ed with hemiplegia. 



Q. What does paralysis essentially indicate? 



rf. It is symptomatic of a lesion of the nerves. 



Q. What is apoplectic stertor owing to? 



t/?. To paralysis of the muscles of the larynx. 



Q. What inference do spontaneous alvine evacuations 

 justify in a case of apoplexy? 



t/?. That the bowels and sphincters are losing their con- 

 tractility. 



Q. If an apoplectic, bloody effusion takes place in a 



