GENETIC TYPE AND THE ENDOCRINES 



283 



PLATE 52 



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Structure of the basal portions of tlie 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 achondroplasia newborn infant. From Knotzke. 



