124 Mr. Shaw on the Facial Nerves. 



everyrespect correspond with those in the dog, whose portio dura 

 was cut. She is also, like the monkey, in which the nerve was 

 cut, obliged to wipe the right eye very often. 



I may here observe, that this girl has entirely lost the sight of 

 the right eye, although the iris is as perfect in its motion as that 

 of the other eye. It is well known to those who are conversant 

 with the history of the disease called amaurosis, that the com- 

 mon idea of the pupil being always fixed in amaurosis is erro- 

 neous. No explanation has yet been given, why the pupil should, 

 in some cases of this disease, remain fixed and insensible to 

 the different degrees of light, while in others it continues as 

 sensible to the stimulus of light as that of a perfect eye. The 

 question is very obscure, but I think that certain cases of pa- 

 ralysis of the different nerves of the head, go to prove that 

 there is much less sympathy between the retina and the iris, 

 than is generally supposed to exist. Perhaps we shall be able 

 ere long, to offer some facts in explanation of this pheno- 

 menon. 



After having ascertained that those actions which are regulated 

 by the respiratory nerve, (which is one of the superadded class,) 

 were the only ones paralyzed on the face, I examined the state 

 of the muscles of the limbs and body, (which are supplied with 

 nerves from the original class,) and I found them to be in every 

 respect perfect. 



I have detailed the symptoms in this case, because it was 

 one of the first observed, after entering upon the inquiry. But 

 as there is amaurosis of one eye, and as, at the commencement 

 of the disease, the limbs were also affected, it is not so fair 

 a case of simple paralysis of the respiratory nerve of the face as 

 others, which I shall presently adduce in support of the opinion, 

 that this particular affection is generally independent of any 

 disease in the brain. 



I shall now describe the state of the muscles in a case of 

 hemiplegia, following an attack of apoplexy. 



The symptoms observable in a case of common palsy, are so 

 familiar to every one, that it might be thought superfluous to 



