816 SIR WILLIAM TURNER, THE CRANIOLOGY OF THE NATIVES OF BORNEO, 



Table IV. 



Sagittal Sections. 





Murut A. 

 C.In. 73-9. 



Bajau M. 

 C.In. 82-9. 



Botan 1 , 



Formosa. 



C.In. 77-1. 



Basi-inial radius, ....... 



83 mm. 



75 mm. 



81 mm. 



,, occipital „ 

 ., lambdal ,, 









96 

 112 



98 

 113 



106 

 110 



,, perpendicular ,, 

 ., bregmatic ,. 









136 

 135 



139 

 137 



134 

 133 



,, glabellar ,, 









107 



100 



111 



,, nasial ., 









101 



96 



102 



,, alveolar ,, 









94 



93 



98 



Nasio-tentorial plane, 









176 



158 



175 



Tentorio-bregmatic line, 









88 



89 



86 



„ perpendicular „ 

 ,, lambdal „ 









90 

 56 



93 



58 



88 

 49 



., occipital ,, 

 Nasio-bregmatic chord, . 









7 

 108 



28 

 107 



36 

 110 



Perpendicular therefrom to outer table of frontal, 

 The same to inner table, .... 







27 

 20 



26 

 20 



26 

 20 



Fronto-occipital diameter of cerebral cavity, . 







163 



151 



161 



From perpendicular radius to frontal pole of cavity, 

 From perpendicular radius to occipital pole of cavity, 





90 

 73 



82 



72 



78 

 83 



This difference in the anteroposterior diameter of the brachy cephalic Bajau is also 

 very marked in the length of the nasio-tentorial plane and of the fronto-occipital 

 diameter of the cerebral cavity above that plane. The cavity in front of the perpen- 

 dicular radius expresses generally the position and extent backwards of the frontal lobe 

 of the cerebrum, its antero-posterior diameter is longest in the dolichocephalic Murut 

 and shortest in the Botan ; whilst the part of the cavity behind that radius, in which 

 the parietal and occipital lobes are lodged, is shortest in the Bajau, and much the 

 longest in the Botan. The series of measurements above the nasio-tentorial plane, more 

 or less vertical in direction, which express the height of the cerebral cavity, though not 

 differing much from each other in the bregmatic and perpendicular regions, show a 

 marked difference in the tentorio-lambdal and -occipital regions, for whilst in the 

 former the Bajau is the longest and the Botan much the shortest, in the tentorio- 

 occipital the Botan is the longest and the Murut is remarkably small. The arc of the 

 frontal bone and the space in the cerebral cavity bounded by the nasio-bregmatic chord, 

 to which attention has been especially called by Professor Cunningham, is almost equal 

 in the three crania. The length of the cerebral cavity between the frontal and occipital 

 poles and the height as expressed by the collective tentorio-bregmatic, -perpendicular, 

 -lambdal, and -occipital diameters in the three crania are as follows : Murut, L. 1 63 mm., 

 H. 241 mm. = 404; Bajau, L. 151, H. 268 = 419; Botan, L. 161, H. 259 = 420. 

 In the collective dimensions of length and height the Bajau and Botan crania are 



