GENERATION OF ANIMALS, IV. x. 



cannot bring this about exactly on account of the 

 indeterminateness of matter and the existence of a 

 plurality of principles which impede the natural pro- 

 cesses of generation and dissolution and so are often 

 the causes of things occurring contrary to Nature. 



Very well : we have now spoken of the nourish- 

 ment of animals within the parent, and of their birth 

 and exit into the outer world ; and we have dealt 

 with each kind separately as well as generally with 

 them all." 



*■ Some Mss. have an addition here, for which see opposite. 



'^S 



