ANIMAL LIFE FORMATION. 91 



tire lower orders of Animals indicate still 

 such a condition, and there is no reason why 

 the evolution should not be going on now, even 

 if we may not be able to detect it at some 

 points, especially at the beginning. 



At each of these parts we may take a sep- 

 arate glance, not forgetting that they belong- 

 together physically, yea psychically in one 

 process. 



The Trunk, then, is to be taken first, being 

 still a kind of enlarged cell both in shape 

 and function, a huge sac containing the or- 

 gans of Assimilation which have been evolved 

 from the earliest activities of the cell. Bi- 

 lateral symmetry is stamped upon the Trunk 

 externally, but not to the point of separating 

 the two sides, which still make one concrete 

 form. Internally the twofoldness of the Or- 

 ganism manifests itself in many gradations, 

 even to the doubling of the organs, which, 

 however, co-operate symmetrically (for ex- 

 ample, the lungs). Still many of its organs 

 are single. The Trunk is more the vegetal 

 part of the human Organism; like the Plant 

 it has its controlling principle outside of it- 

 self; that is, its organs have their final seat 

 of authority in the Head with its brain. Will 

 the human Trunk, having reached its present 

 stage after seons of development, perchance 

 from the originaHPlant-cell, undergo still fur- 



