50 FUNDAMENTAL PRINCIPLES 



and is that all chromatin has come from previously existing chromatin 

 back to that of the first created protoplasm. This implies that in the 

 first life created on this earth were inherent all the possibilities which 

 have been realized in all living things that have since come from that life. 

 76. Growth of the Cell. — The two daughter cells resulting from cell 

 division, each precisely similar to the parent cell except in size, grow and 

 tend ultimately to reach the same size as the parent cell. This involves 

 growth in all portions of the cell, and being growth by intussusception it 

 is accomplished by the slipping in of particles of new material among 

 particles already definitely arranged. Thus the organization, which is 

 the central fact in protoplasm and is behind all life phenomena, is passed 

 on unchanged. 



