( 77 ) 



494- Difpute betwixt MAJUOTTE and 

 PEQUET concerning the feat of 

 vifion. 



495' Of the caufes and effe&s of the 

 contraftion and dilatation of the 

 pupil. 



Why we fee beft from a dark 

 place to a light one, and vice 

 verfa. 



496. Obfervations on the ufe of the 



pigmentum nigrum. 



Why fome people fee better in 

 the dark than others, &c. 



Several other phcenomena ac- 

 counted for. 



497. Remarks oh the caufe of Myopia, 

 or ihort fight. 



498. Of Pre/byopia, or weak fight. 

 Obfervations on the ufe of glafles 



to remedy the above imper- 

 feftions. 



499. Of Cataratt. 



Of 



