x SCIENCE AND REVOLUTION 



verse. Still this old universe persists in its in- 

 finity, and the new worlds are but islands in its 

 boundless extension. It reacts on the new world- 

 processes and assists in their further condensa- 

 tion. 



^ons pass before the physico-chemical reac- 

 tions have accumulated sufficient precipitations of 

 solid and fluid matter on the earth to form a 

 durable mineral shell with pools of water and an 

 atmosphere. Other aeons pass before the first 

 organic life rises out of the reactions of the inor- 

 ganic under favorable conditions. But when 

 these conditions are at last mature, the revolu- 

 tion of the organic against the inorganic gen- 

 erates the first protists. These separate in the 

 course of ages into unicellular plants (proto- 

 phyta) and unicellular animals (protozoa). 



The inorganic environment continues to 

 change, and, through the interaction of organic 

 and inorganic life-processes, the simple monera 

 without a cell-nucleus are transformed into al- 

 garia with a cell-nucleus and a cell-membrane. 

 After the first division of labor between inside 

 and outside protoplasm has taken place, other 

 specializations of the interior and exterior struc- 

 ture follow in due time. 



Along with this development comes association 



178 



