722 PRINCIPAL SIR WILLIAM TURNER ON 



plete facial index in the adult was 9r5, its maxillo-facial index was 51*5 ; both 

 indices were high-faced, leptoprosopic. The gnathic index in the same skull, 98 "9, 

 was prognathous ; the canine fossae were moderately deep. The nasio-malar index in 

 the aged skull was 1117, prosopic ; in the adult 106"5, mesopic. The fronto-malar 

 border of the orbit was thickened, the infraorbital suture was faint in the adult, the 

 interorbital width was 23 and 25 mm. respectively, the orbital index, 917, in the 

 adult was megaseme, in the aged the index, 85, was mesoseme. The hard palate in 

 the adult was high-arched and roughened and the teeth were somewhat worn, the 

 palato-maxillary index, 122'H, was hyperbrachyuranic. The lower jaw had a projecting 

 chin, the angle was obtuse, the coronoid feeble, and the muscular markings moderate. 

 The alveolar border was feeble. In the aged the jaw was toothless and senile. 



In the adult the cranial sutures were distinct ; small Wormians in lambdoid, no 

 epipterics ; no third condyl, nor pterygo-spinous plate, nor flattening of occipital 

 condyls ; one jugal was tuberculated. In the aged skull the sutures were obliterated, the 

 styloids were ossified ; the compartment for the right jugular vein in the foramen was 

 very large, that for the left was almost obliterated. 



The mean vertical index was 7 6 "9, hypsicephalic, or high skull. In each skull the 

 basi-bregmatic height was more than the greatest breadth. The mean breadth-height 

 index was 103"5. In this respect these skulls were hypsistenocephalic, i.e. they were 

 high and narrow, a character which I have recognised and described elsewhere * as 

 present in many dolichocephalic aboriginal races. The cranio-facial index, computed 

 by dividing the interzygomatic breadth x 100 by the glabello-occipital length, was 

 in one skull 73*4, in the other 74 '3. The cranio-facial index therefore was low, which 

 is a frequent character of the dolichocephalic skull, a relatively long and narrow skull 

 being associated with a relatively high and narrow face. 



In Part 1. 1 I described five skulls, with measurements and figures, collected at 

 Jiddim in the North Chin Hills, also one from Klungroa in the South Chin Hills. 

 They formed a homogeneous group, the cephalic index of which ranged from 71'0 to 

 77 "5, the mean being 75 ; they were therefore either dolichocephalic or in the lower 

 term of the mesaticephalic group; the vertical index ranged from 707 to 7 8 "6, two 

 were relatively high, hypsicephalic, but no specimen was low or chamsecephalic, and the 

 mean, 73"4, was metriocephalic, moderate in height. The mean gnathic index was 97 '6, 

 orthognathous, though one skull, with index 1065, was prognathous. The mean 

 nasal index was 52*1, mesorhine or moderate in the relative width of the anterior 

 nares, though three were platyrhine, wide nostrils, with the index above 53. The 

 mean orbital index, 90 '2, was high, as a rule they were megaseme, and only one 

 specimen had a low orbit with microseme index. The mean maxillo- or upper facial 

 index, 50*4, was high and narrow, leptoprosopic in proportion, but when the lower 

 jaw was included the complete facial index was much lower, chamseprosopic, which 



* See my nieinoir, "The Ci-iiiiology of the People of Scotland," in Trans. Eoy. Soc. Edin., vol. xl. p. 599, 1903. 

 t Trans. Jioij. Soc. Edin., vol. x.xxix., part iii., 1899. 



