MEMOIRS OF THE NATIOXAL ACADEMY OF SCIENCES. 



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TABLE II. Ordination of 48 cephalic indices. Salado. 



Variation, 19 57. Theoretical mean of variation, 88.19. Skull nearest to mean, H. 8. Aver- 

 age, 88.47. 



TABLE III. Seriation of 48 cephalic indices. Salado. 



Maximum of frequency, 90. 



TABLE IV. Ordination of 16 cephalic indices of apparently normal skulls. Salado. 



Variation, 16.20. Theoretical mean of variation, 86.53. Skulls nearest to mean, H. 7 and H. 

 40. Average, 86.94. 



No. H. 55, an apparently normal skull, of which the vault only is preserved, has a normal 

 index of 78.72, but it is aberrant as regards the rest of the group by reason of its much greater 

 size and different configuration. 



No. H. 23, having lowest cephalic index, has next to lowest vertico-transverse index. The 

 lowest vertico- transverse index is in the skull of a child. 



