154 THE BIOCOSMOS CELLULAR. 



lular associated Life dawns, which is likewise 

 to have a great career, and which has the ad- 



* 



vantage of visibility, of unfolding within the 

 limits of the eye which eye is itself a part of 

 the same evolution. 



Such is the rise from the divisive principle 

 of the previous unicellular stage of cell-life, 

 the second stage of what we here call Cytol- 

 ogy. The independent cell has been produced 

 and then has reproduced itself in Nature with 

 a vast multiplicity, but this individual inde- 

 pendence passes over into inter-dependence, 

 the outer relation is transmuted into an in- 

 ner relation ; the single cell gives up its isola- 

 tion through its own psychical instinct and 

 becomes social, communal, and so reflects 

 from afar the institutional world, toward 

 which it is mounting on Life's ladder. 



Moreover the simple elemental uniformity 

 of the original cell changes, adapting itself 

 to its new place and duty in the larger or- 

 ganism of which it has become a member. 

 The cellular structure of each organ of the 

 human body, for instance, becomes different 

 -that of the muscle is not that of the nerve. 

 So we observe a great differentiation of the 

 cell through its associated life with other 

 cells in the same organism. And in different 

 organisms, on the other hand, we find a mar- 

 velous similarity of cells belonging to the 



