128 Mr. Shaw on the Facial Nerves. 



the tongue, which are regulated by the third division of the 

 5th pair, namely, taste and sensibility. 



The want of common sensibility on the paralyzed side of the 

 tongue, was as evident as in the cheek of the same side. 



When a piece of sugar was put on both sides of the tongue, 

 the taste was perceptible only on the left side. 



On examination of the state of the shoulders, and of the 

 muscles of respiration on the chest and abdomen, I found that 

 when he was about to sneeze, or when he made a long inspira- 

 tion, the shoulders of both sides were raised equally ; but when 

 I desired him to lift his right shoulder, he had not more power 

 over it than he had over the leg of the same side, i. e., he could 

 raise it with a considerable effort, but it was evidently the 

 action of a paralytic. 



On putting my hands on his ribs when he breathed hard, I 

 could discover no difference in the two sides, but both shoulders 

 and ribs acted in unison with each other. 



It will perhaps be granted, that in this experiment there is 

 sufficient to shew, that in the common case of hemiplegia, the 

 respiratory nerves passing to the muscles of the chest are as little 

 'mpaired as those on the face. The ease with which a patient 

 in this condition breathes, is so unlike to the manner in which 

 an animal respires when the par vagum, or any of the import- 

 ant nerves of respiration, has been injured, that we may be 

 permitted to suppose, that in those cases of apoplexy, from 

 which a patient revives with the loss of power over the limbs 

 of one side, (being in fact, the case of common hemiplegia,) 

 neither the par vagum nor the other respiratory nerves are 

 affected. 



Cases illustrative of the latter opinion, will be offered in 

 another communication ; in the mean time, I trust, that by the 

 detail of the symptoms in these two examples, (which will be 

 found to be cases of common occurrence,) I have made out my 

 proposition, that when either system of nerves is attacked by 

 disease, the symptoms are different. It only requires that a 

 number of cases should be detailed, to prove that the two sys- 

 tems are seldom or never affected at the sam£ time. 



