( 76 ) 



487. Of the cellular ftru&ure of the 

 membrane which contains it. 

 Of the cavity for the lodgement 



of the cryftalline, &c. 



Of VISION. 



488. Of the refra&ing powers, &c. 

 of the different humours of the 

 eye. 



489. Of the refpe&ive ufes of the three 

 coats of the eye. 



490. Obfervations on the ufe of the 

 ligamcntum ciliare. 



491. Of the change produced in the 

 eye, that objefts may appear dif- 

 tincl at different diftances. 



492. Of the manner in which the 

 pictures of objefts are formed 

 upon the Retina. 



493. Of the punEtum C(zcurn> and 

 MARIOTTE'S experiment to 

 prove the infenfibility of the 

 Retina at that part. 



494. Difpute 



