GENETIC TYPE AND THE ENDOCRINES 



283 



PLATE 52 



Structure of the basal portions of the immature human and puppy skulls. 



1 Central portion of basal aspect of the skull of a 4 year old child. 



2 Sagittal section through the head of a normal newborn infant. From Knotzke. 



3 Sagittal section through the skull of a young puppy. 



4 Sagittal section through the head of an achondroplasic newborn infant. From Knotzke. 



