Chap. VII. ANTIENT METAPHYSICS. 435 



tion of what I have endeavoured to prove in the preceding chaptefi 

 that a material v^orld exifts. 



In the next chapter, I proceed to examine the nature of an evi- 

 dence of a very different kind, viz. geometrical evidence, which> 

 however, I will fhow has fome dependence upon material things. 



I i i 2 CHAP. 



