248 THE GROWTH OF THE BRAIN. 



There can be little doubt that changes similar to thesQ 

 affect the other portions of the encephalon, although it 

 is not possible at the moment to bring forward direct 

 proof of this. It is evident from these facts that the 

 organisation and therefore the details of the architecture 

 of the central system are continually being modified 

 through life. Somewhere beyond maturity retrogressive 

 changes begin, but the few facts which exist on this 

 phase of growth may be conveniently deferred until the 

 discussion of old age. 



