OF NATURAL HISTORY. 195 



that colours are not modes of his exiftence, but that they feem to be 

 fomething exifting in his eyes, in the fame manner as he feels at 

 the ends of his fingers the objefts he touches. 



The Abbe, in the fame ingenious manner, Ihews how, by expe- 

 rience and habit, by motion and touching, we acquire a facility in 

 corredting the errors of vifion. Bot our limits permit us not to fol- 

 low him any farther. 



ifiili ratsm \IIf,i3fr3ig :2i..,i«KrEH3'«i! 



Bb2 CHAP. 



