ARCHITECTURAL CHANGES DUE TO GROWTH. 



243 



the samples were taken are indicated as follows : F.I.S., first 

 frontal gyms, left ; F.3.S., third frontal gyrus, left ; F.3-d., ditto, 

 right; V.c.d., anterior central gyrus, right; O.d., occipital lobe, 

 right ; T.I.S., first temporal gyrus, left. 



