NATURAL THEOLOGY. 6S 



coverable in those bodies, for which it gives us no 

 contriver, offers no account whatever ; but also by 

 the further consideration, that things generated 

 possess a clear relation to things not generated. 

 If it were merely one part of a generated body 

 bearing a relation to another part of the same 

 body; as the mouth of an animal to the throat, 

 the throat td the stomach, the stomach to the in- 

 testines, those to the recruiting of the blood, and, 

 by means of the blood, to the nourishment of the 

 whole frame : or if it were only one generated 

 body bearing a relation to another generated 

 body ; as the sexes of the same species to each 

 other, animals of prey to their prey, herbivorous 

 and granivorous animals to the plants or seeds 

 upon which they feed ; it might be contended, 

 that the whole of this correspondency was at- 

 tributable to generation, the common origin from 

 which these substances proceeded. But what 

 shall we say to agreements which exist between 

 things generated and things not generated? Can 

 it be doubted, was it ever doubted, but that the 

 lungs of animals bear a relation to the air, as a 

 permanently elastic fluid ? They act in it and by 

 it ; they cannot act without it. Now, if genera- 

 tion produced the animal, it did not produce the 

 air : yet their properties correspond. The eye is 

 made for light, and light for the eye. The eye 

 would be of no use without light, and light per- 

 haps of little without eyes ; yet one is produced 

 by generation, the other not. The ear depends 



