FORMATION OF COMPOUND BODIES. 185 



rand colorification. I am well aware, that in 

 endeavouring to connect the great chain of 

 effects, which are constantly passing before 

 our eyes with their producing causes, many 

 links are yet wanting ; I, nevertheless, am 

 of opinion, that we possess data sufficient, on 

 which a legitimate and natural system may be 

 established. If I fail in the attempt, I shall 

 only share the fate which my predecessors have 

 experienced ; and, therefore, claim for myself, 

 the same candor and indulgence which have 

 been shown to them. 



