THE HUMAN SKULL 



167 



associated with the exact type of modelHng of the lower jaw, and the 

 relation of the upper and lower dental arches to one another. 



On measuring the bregma-lambda chord in the Piltdown skull I 

 found it to be 11-3 cm., which is practically the same as that of 

 modern white races (See Fig. 8). I calculated the maximum distance 

 of this from the parietal arc to be 22 mm. which in its turn closely 

 corresponds to the measurement in modern European skulls. Both 

 arc and chord exhibited greater lengths than those found by Biichner' 

 in aboriginal Australian and Tasmanian crania. 



.--d:rà_ 



Fig. 8. — Shows below the Piltdown outline and above a modern European cranial 

 outline, both drawn to scale on the same length of glabella-inion line. It 

 would be difficult to distinguish them, apart from the size of the bregmatic 

 angle. This Fig. shows that the frontal cranial arc and chord, the parietal 

 cranial arc and chord and the lambda-inion curvature and chord are not 

 only within the range of variation but are practically the same as those of 

 the modern European type of skull. 



' op. cit. 



