VOL. XXXIII.] PHILOSOPHICAL TRANSACTIONS. 43 



the eye was farther removed from the object; but as either the right or left eye 

 was shut, the middle, though different, part of the objects was obscured. 

 Thus, for instance, if she viewed with her left eye only these three words, ego 

 sum cocca, the middle word sum, when the pupil was directed towards it, was 

 not seen, but only the words ego — cceca; and when the pupil was directed to- 

 wards ego, it was not seen, only the words sum, cceca; but if on the contrary 

 she shut her left eye, and viewed an object with her right, then the middle of 

 the object was not seen ; yet in such a manner, that only a fourth part of the 

 oliject escaped the sight, while the other three parts were distinctly seen. Thus, 

 for instance, should she view with this eye these four words ego opto esse sana, 

 then the pupil being directed towards the middle, she saw all the words but 

 opto, which was obscured by a round spot, and with difficulty she saw ego 

 esse Sana. 



Since, therefore, it appears from this case, that the round spot, by which 

 part of the object was obscured, was really fixed, though changing its place 

 according to the different direction of the pupil, it seems doubtful whether the 

 defect was in the crystalline humour, or in the retina; in the cornea there 

 appeared no spot or obscurity. 



The abovementioned phenomenon, viz. where she could see the whole body 

 of a man, excepting only his head, seems to be of greater consequence, and 

 more difficult to be explained. 



Dissection of two Eyes which had been affected with Cataract ; communicated in 



a Letter from to Samuel Molyneia:, Esq. Secretary to the Prince of 



Wales, and F. R. S. N" 384, p. 149. An Abstract from the Latin. 



An old soldier, named John Wright, having both eyes affected with cataract, 

 underwent the operation of couching; by which the sight of the left eye was 

 restored; but the operation on the right eye was unsuccessful. He was after- 

 wards taken into the Royal Hospital of Invalids, near Dublin;* and died in 

 J 722, 8 or 9 years after the operation had been performed, being choaked by a 

 bit of cheese sticking in his throat, an accident which had nearly proved fatal 

 twice before, owing to a constriction of the oesophagus. 



Both eyes, after being detached from their sockets, were sent for examina- 

 tion to Tho. Molyneux, M. D. Fellow of the Royal College of Physicians in 

 Dublin, &c. On removing the cornea with a portion of the sclerotica of the 

 left eye, the sight of which had been restored, no traces of 3 pellicle floating 



* The Kilmainham Hospital. 



