100 NERVOUS SYSTEM. 



#. In their colour, consistence and properties. 



Q. What kind of membrane envelopes the ganglions? 



\fi. The cellular membrane, resembling the sub-mucous 

 and arterial cellular coat. 



Q. What are the vital properties of the ganglions? 



*#. Organic sensibility and insensible organic contrac- 

 tility. 



Q. What proves that they are destitute of animal sen- 

 sibility? 



t/?. Biehat opened a dog; he irritated the semilunar 

 ganglion, without giving the animal pain: he irritated a 

 cerebral nerve, it excited great pain. 



Q. What important division is to be made in the gene- 

 ral class of nervous disorders? 



/?. They are divisible into those which arise from the 

 nerves of animal, and those from the nerves of organic 

 life. 



Q. Name several of the diseases of the nerves of ani- 

 mal life? 



A. Convulsions, palsy, hemiplegia, tetanus, catalepsy, 

 apoplexy, and the greater number of epilepsies, disorders 

 of sight, hearing, taste, smell. 



Q. Now present some of the diseases of the nerves of 

 organic life. 



ft. Hysteria, hypochondriasis, melancholy, diseases of 

 the abdomen and chest. Reflect on the difference in the 

 two classes of diseases alluded to in this and the preced- 

 ing question. 



Q.\ Does the pain felt in the viscera of organic life dif- 

 fer from that in the viscera of animal life? 



#. It does. The intestinal pains, those felt in the loins 

 from uterine affection, the burning at the stomach, all dif- 



