432 DR MATTHEW YOUNG. 



I have limited myself to those given by Berry and Robertson in their papers on 

 the TasmaniaD skull, as they provide the only data available for comparison. 



Having compared the Tasmanian and Australian and West Scottish series of 

 skulls by Klaatsch's method, I thought it would be of interest to see if Schwalbe's 

 measurements brought to light any new features. While objections have been raised 

 to the value to be attached to some of the measurements in the subjoined scheme, to 

 which I shall refer later, it is generally agreed that they provide a valuable analysis 

 of the characters of the cranial vault. Although morphological in their nature and 

 of value in a general way in establishing a comparison between the anthropoid 

 group, primitive man, and man as he exists at the present day, it is doubtful as to 

 how far these data can serve to define the relative morphological positions of types 

 of recent man, when the skull forms are different. 



The special interest in my inquiry, confined as it has been largely to the brain 

 case, was the comparison, in respect of the vault, of a skull of dolichocephalic type 

 and of high status with that of the same type and of a low status in civilisation. 



In the series of 100 West Scottish skulls I have recorded the same 27 observations 

 as Berry and Robertson in their papers on the Tasmanian skull, and all these except 

 the maximum breadth I obtained from the dioptrographic median sagittal tracings. 



The following are the observations : — 



1. The glabella-inion length. 



2. The calvarial height. 



o rp, , • , , • , , • -, • calvarial height x 100 



3. Ine calvarial height index, i.e. — — — - — - — ° . 



glabella-inion length 



4. The maximum breadth. 



fc mu i • i i ■ w i, iii • i ■ calvarial height x 100 



5. Ine calvarial height-breadth index, i.e. - — . 



maximum breadth 



6. Half of sum of the glabella-inion length and breadth added together. 



r, rpi i ■ i i • i j. i if i i ii • • i ,i ■ calvarial height x 100 



7. 1 he calvarial height hall sum glabella-inion length, i.e. - — — — — - — — — - — r-r-. 



half sum glabella-inion length and breadth 



8. Distance of foot point of calvarial height from glabella. 



9. The calvarial height foot-point positional index. 



10. The frontal angle. 



11. The bregma angle. 



12. The distance of the foot point of the bregma from the glabella. 



13. The bregma foot-point positional index. 



14. Length of frontal arc. 



15. Length of frontal chord. 



,„ n . , c r , , ■ frontal chord length , 100 



lb. Curvature index of os frontal, i.e. -2 . 



frontal arc length 



17. The angle of frontal curvature. 



18. The length of the chord of pars glabellaris of os frontale. 



19. The length of the chord of pars cerebralis of os frontale. 



™ ,„, i t. ii ill i-i ■ length of glabellar chord x 100 



20. Lhe glabella cerebral chord index, i.e. — 5 5 , 



length of cerebral chord 



21. The length of the parietal arc. 



22. The length of the parietal chord. 



23. The curvature index of the os parietale. 



