GENERATION OF ANIMALS, I. xix. 



the physical substance of the semen is the cause of 

 generation, or whether it contains some disposition " 

 and some principle of movement which effects gen- 

 eration), since neither a hand nor any other part of 

 the body whatsoever is a hand or any other part of the 

 body if it lacks Soul ^ or some other dynamis ; it has 

 the same name,*^ but that is all.** 



[It is clear also that in cases where seminal 

 colliquescence occurs, this too is a residue ; and this 

 happens when (a fresh secretion) is decomposed into 

 that which preceded it ; just as when a (fresh) layer 

 of plaster spread on a wall immediately drops away, 

 the reason being that the stuff which comes away is 

 identical with that which was applied in the first 

 instance. In just the same way, the final residue is 

 identical with the original colliquescence. Such then 

 are the Unes on which we treat that subject.] 



Now (1) the weaker creature too must of neces- 

 sity produce a residue, greater in amount and less 

 thoroughly concocted ; and (2) this, if such is its 

 character, must of necessity be a volume of bloodlike 

 fluid. -^ (3) ITiat which by nature has a smaller share 



Koivov, 6 he KOTO. Tovvofia Xoyos ttjs ovaias erepos. In this case, 

 the ovaia required to be present is Soul (see following note, 

 and reference to De anima given in note on 738 b 26) ; but 

 it is absent. For awiLwyuov, see note on 721 a 3. 



Because Soul is the essence of any particular body (or of 

 any part of it). Cf. 738 b 26 and note there. 



This paragraph seems to be a continuation of the pre- 

 ceding interpolation, 726 a 25. There are variations in the 

 text. Thus, the mss. PSY replace " stuff which . . . 

 colliquescence " by " final residue is the same as the first 

 residue." Some of the words seem to echo lines 14 and 15 

 above. 



* Semen of course has undergone a further stage of con- 

 coction, and has lost its bloodlike appearance. 



93 



