2S MOTIONS OF THE RETINA. SECT. III. 5. 



gutta ferena, and in fome cafes of deafnefs ; and 

 one fide of the face has fometimes loft its power of 

 fenfation, but retained its power of motion ; other 

 parts of the body have loft their motions but re- 

 tained their fenfation, as in the common hemipla- 

 gia ; and in other inftances both thefe powers have 

 perifhed together. 



8. In fome convulfive difeafes a delirium or infa- 

 nity fupervenes, and the convulfions ceafe ; and 

 converfely the convulfions fhall fupervene, and the 

 delirium ceafe. Of this I have been a witnefs ma- 

 ny times in a day in the paroxyfms of violent epi- 

 lepfies ; which evinces that one kind of delirium is 

 a convulfion of the organs of fenfe, and that our 

 ideas are the motions of thefe organs : the fubfe- 

 quent cafes will illuftrate this obfervation. 



Mifs G , a fair young lady, with light 



eyes and hair, was feized with moft violent convul- 

 fions of her limbs, with outrageous hiccough, and 

 moft vehement efforts to vomit : after near an hour 

 xvas elapfed this tragedy ceafed, and a calm talkative 

 delirium fupervened for about another hour ; and 

 thefe relieved each other at intervals during the 

 greateft part of three or four days. After having 

 carefully confidered this difeafe, I thought the con- 

 vulfions of her ideas lefs dangerous than thofe of 

 her mufcles ; and having in vain attempted to make 

 any opiate continue in her ftomach, an ounce of 

 laudanum was rubbed along the fpine of her back, 

 and a dram of it was uled as an enema ; by this me- 

 dicine a kind of drunken delirium was continued 

 rnany hours ; and when it ceafed the convulfions 

 did not return ; and the lady continued well many 

 years, except fome {lighter relapfes, which were re- 

 lieved in the fame manner. 



Mifs H , an accomplifhed young lady, with 



light eyes and hair, was feized with convulfions of 

 her iiaibs, with hiccough, and efforts to vomit, 



more 



