ARCHITECTURAL CHANGES DUE TO GROWTH. 239 



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o o OT 



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m 



t 





W 



: Q * 

 f 



UlfV 



FIG. 46. To show the developing human cortex (Vignal), X 40 

 diameters. A, foetus of 28 weeks; B, foetus of 32 weeks ; 

 C, child at birth ; D, man at maturity ; I-V, layers of the 

 cortex according to the enumeration of Meynert. 



