320 THE BIOCOSMOS PARTICULARIZED. 



The Medulla has chiefly control over the 

 functions of the inward-turning organs of the 

 Trunk (lungs, heart, stomach, etc.). It works 

 automatically from within, not reflexly from 

 without (reflex action properly starts inward 

 from the skin). Also it works continuously, 

 not subject directly to the Will. Still it does 

 not act independently for it too is associated 

 with the rest of the Organism. In general the 

 Medulla is in control the vegetal part of the 

 total System, whose action lies inside the tho- 

 rax and abdomen, and cannot be interfered 

 with by volition. Thus it is generally recog- 

 nized as the co-ordinating center of all invol- 

 untary activity, or of the Organism inwardly 

 directed in Digestion, Circulation, Excretion. 

 It contrasts with the Cerebellum which co-or- 

 dinates mainly the outward-turning organs 

 which have the battle to fight with the external 

 world for food and defense and so must be 

 under direct control. 



Putting these three parts of the Brain into 

 an order, we see a return upon the whole or- 

 ganism, of which the Medulla is the co-ordi- 

 nation of the inward-directed part, the Cere- 

 bellum of the outward-directed part, while the 

 Cerebrum is the co-ordination of these co-or- 

 dinations, and likewise of its own or of itself. 

 Here then we may see the primal seat of or- 

 ganic self-direction, which has three phases or 



