28o THE HISTORY OF CREATION. 



by the fact that the human egg is nothing more than a 

 simple cell. (Compare p. 124.) 



Third Stage : Synamoebse. 



In order to form an approximate conception of the organ- 

 isation of those ancestors of Man which first developed out 

 of the single-celled Primaeval animals, it is necessary to trace 

 the changes undergone by the human egg in the beginning 

 of its individual development. It is just here that ontogeny 

 .guides us with the greatest certainty on to the track of 

 phylogeny. We have already seen that the egg of Man (in 

 the same way as that of all other Mammals), after fructifica- 

 tion has taken place, falls by self-division into a mass of 

 simple and equi-formal Amoeba-like cells (vol. i. p. 190, 

 Fig. 4 D.) All these divided globules are at first exactly like 

 one another, naked cells containing a kernel, but without 

 covering ; in many animals they show movements like those 

 of the Amoebae. This ontogenetic stage of development 

 which we called Morula (p. 125), on account of its mulberry 

 shape, is a certain proof that in the early primordial period 

 there existed ancestors of man which possessed the formi 

 value of a mass of homogeneous, loosely connected cells. 

 They may be called a community of Amioeboe (Synamoebse). 

 (Compare p. 127.) They originated out of the single-celled 

 Primseval animals of the second stage by repeated self- 

 division and by the permanent union of the products of 

 this division. 



Fourth Stage : Ciliated Larva (Planaeada). 



In the course of the ontogenesis of most of the lower 

 animals, and also in that of the lowest Vertebrate animals, 



