GENERATION OF ANIMALS, I. xxin. 



differ from the creatures which are merely alive ; 

 since, however, if it be an animal, its attributes must 

 of necessity include that of being alive, when the time 

 comes for it to accompUsh the function proper to that 

 which is aUve," then it copulates and unites and 

 becomes as it were a plant, just as we have said. 



The Testacea stand midway between animals and 

 plants and so, as being in both groups, perform the 

 function of neither : as plants, they do not have male 

 and female and so they do not generate by pairing ; 

 as animals they bear no fruit externally Uke that 

 borne by plants ; but they take shape and are gener- 

 ated out of a certain earthv and fluid coagulation. 

 The manner of generation of these creatures, how- 

 ever, mxist be described later.* 



living things must possess, is also to yewrjriKov irepov olov 

 avTo (735 a 17, 18). 

 » InBk. Ill, ch. 11. 



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