718 



PRINCIPAL SIR WILLIAM TURNER ON 



cavity. In the Miinda skull, again, the bregraa-nasal perpendicular was 21 mm., the 

 frontal was only 4 mm. thick, and the perpendicular in the cavity was 17 mm. Other 

 examples also could be given to show the importance of deducting the thickness of the 

 vault from the bregma-nasal perpendicular in the tracings on the surface of the crania, 

 in estimating the proportion which the most projecting part of the frontal bone bears to 

 the space occupied by the cerebrum. In each skull the lambda-inial perpendicular was 

 relatively short, ranging from 6 to IG mm., with a mean 9 '3 mm. ; the bregma-lambdal 

 was much longer, ranging from 14 to 29, the mean being 23 "8 ; whilst the bregma- 

 nasal perpendicular, which expressed the projection of the frontal bone, was somewhat 

 longer, ranging from 21 to 31, with a mean 26"9 mm. 



Table V. — Dravidian Tribes. 





Bhils. 



Gonds. 



■q 



■-a 



a 









a 



Tamil 

 Sudra. 





















7. 



8. 



9. 

 mm. 



A. 



1. 



B. 



2. 



D. 



4. 





g 



H 



a 



2 =« 

 mm. 



1-5 



8. 



10. 



Nasio - bregmatic cliord 



mm. 



mm. 



mm. 



mm. 



mm. 



mm. 



mm. 



mm. 



mm. 



mm. 



ram. 



mm. 



of frontal, Ir.n. 



108 



102 



101 



114 



113 



110 



110 



97 



108 



112 



115 



109 



115 



112 



Bregma - uasal perpen- 































dicular to outer surface 































of frontal . 



23 



26 



23 



28 



30 



30 



29 



21 



28 



26 



31 



25 



29 



28 



Bregma-lambdal chord 































of parietal, bf.l. 



112 



104 



107 



120 



111 



116 



106 



99 



120 



107 



120 



122 



106 



120 



Bregma - lambdal per- 































pendicular to outer 































surface of parietal 



24 



22 



23 



29 



20 



20 



14 



26 



27 



23 



25 



28 



20 



27 



Lambda-inial chord of 































occipital, l.in.. . 



69 



60 



65 



61 



62 



70 



76 



69 



65 



58 



65 



59 



57 



70 



Lambda - inial perpen- 































dicular to outersurface 































of occipital 



6 



9 



10 



10 



6 



13 



16 



10 



9 



9 



9 



8 



6 



10 



Glabello inial diameter . 



176 



158 



168 



171 



172 



161 



177 



175 



182 



169 



176 



174 



180 



168 



Bregma-glabellar chord 



106 



99 



98 



111 



107 



106 



110 



93 



103 



104 



112 



104 



111 



105 



Bregma - glabellar per- 































pendicular 



20 



23 



22 



23 



24 



26 



23 



17 



23 



20 



25 



19 



25 



■22 



Bregma angle 































(Schwalbe) 



60° 



63° 



60° 



63° 



59° 



56° 



71° 



63° 



64° 



71° 



60° 



68° 



70° 



50° 



Bregma - nasio - tentorial 





























angle (Turner) 



57° 



60° 



59° 



60° 



61° 



67° 



74° 



65° 



63° 



71° 



60° 



60° 



69° 58° 



In this memoir, as in Part II. on the Aborigines of Tasmania,* I measured the 

 angle formed by the anterior end of the glabello-inial diameter with that of the bregma- 

 glabellar chord, the bregma angle of Schwalbe. This angle (Table V.) in three 

 Dravidian skulls was from 50° to 59°, three were 70° to 71°, but the majority ranged 

 between 60° and 68°, whilst the mean of the series was 627°. In seven Tasmanian 

 skulls I found that the bregma angle ranged from 54° to 60°, with a mean 57'1° ; and 

 in seventeen Australians the range was from 50° to 62°, with a mean also 57"1°. The 

 Dravidian skulls, whilst showing a much greater range of variation, had a higher 

 mean, a more open angle, which, in relation to the glabello-inial diameter, expressed a 

 higher degree of frontal elevation. 



I have also stated in Table V. the angle formed by the junction of the anterior 



* Trans. Roy. Soc. Edin., vol. xlvii. p. 448, 1910. 



