42 Natural Salvation. 



brain which would live on indefinitely were it not for acci- 

 dents to other parts of the organism. 



Generally speaking, longevity is the proof of correct 

 living. That cell, or union of cells, lives long that is 

 well nourished and well protected. No animal organism 

 is as yet perfect, even approximately so. All the groups 

 of tissue cells have not been equally advantaged by 

 organic union, but taken together a great gain has re- 

 sulted, chiefly in the matter of food and protection. The 

 brain and muscle cells of the animal organism, for ex- 

 ample, have their food specially prepared for them along 

 the intestinal tract and brought to them in the arterial 

 conduits, and they are housed and shielded from the 

 mordant action of oxygen and the attacks of hostile 

 bacteria by the integument and bony walls. 



All the physiological cells are alike benefited in that 

 prime requisite, food ; and this fact must be kept in view 

 when the higher social organization of the metazoons is 

 considered. Food specially prepared and refined by 

 groups of cells which have made this office their business, 

 has largely conduced to the longevity of the physiological 

 cell and made brain possible. Without a specially pre- 

 pared food the organic cell could not survive for a day. 

 Improved food, protection from enemies and, subjectively, 

 that greater guiding intelligence that comes from organic 

 life are the factors which have so improved the cell (the 

 protozoon developed to a neuron) that it lives for a 



