MEMOIUS OF THE NATIONAL ACADEMY OF SCIENCES. 



197 



piu-isoiis, notwithstandingthat Topinard's series are very small, he reports on only twelve Mongolian 

 skulls and Ins highest scries, Ne\v Caledonians, numbers only 74. 



The following table (M) is based on one in Topinard's Elements (Tanthropoloyie generate, p. 

 802. 



TABLE M. Inferior border of nitsal aperture in three races. 



The following (Table N) are percentages placed in the order of numerical importance of classes 

 A+ A' as they occur in various races. They are computed from figures given by Topinard*, Sala- 

 doans added. 



TABLK N. Inferior border of nasal aperture, Classes A 4- A'. 



From the foregoing it would appear that the Saladoans come next to the Europeans, in the 

 prevalence of a high form of the feature under discussion, and that they are farther above the 

 Mongolians than they are below the Auvergnians. 



Position of septum. In 28 skulls in which the septum narium is preserved we find that it is 

 straight in 4,t deflected to the left in ll,t and deflected to the right in 13. 



Anterior ntis/il spine. We iiiid cause for dissatisfaction in applying Broca's instructionsll to 

 the description of this feature in the present series. We often encounter a long, sharp ridge 

 extending from the extremity of the spine downwards to the alveolar point; this ridge renders 

 spines which are very prominent when viewed from above or below quite subdued when viewed 

 laterally, according .to Broca's instructions. Thus, if it were not for the existence of such a ridge, 

 the spine of skull II. 8 would belong to class 5 of Broca, whereas with this ridge it must be placed 

 in class 1 (see Plate 8) ; but, as we have no other system of description than that of Broca, we have 

 employed it here. 



Of 43 well-preserved anterior nasal spines we have 9 of class No. 1 or the least salient, 20 of 

 class No. 2, 12 of class No. 3, 1 of class No. 4, and but 1 of class No. 5 or the most salient. See 

 Table XLVII. 



Nasal synostosis. In seventeen of these skulls out of forty-two examined there is synostosis of 

 at least the upper part of the internasal suture. The percentage then of nasal synostosis in some 

 degree is 40.5. We refer to the upper end of the suture more particularly, because the lower parts 

 of the bones are often broken away. A partial synostosis of the suture at its lower end should^ 

 not be reckoned in with the others, as it may be the result of some traumatism. Skull H. 3d is 

 probably a ease of this kind, as its nasal index is very low and its nasal bones deflected. It is 

 not counted in reckoning the percentage. 



" Op. cit. pp. 801, 802. 



tNos. II. 1, H. 4, H. 22, and H. 29. 



tNos. H. 7, H. 18, II 19, H. 21, H. 25, H. 27, H. 30, H. 32, H. 34, H. 41, and H. 45. 



$ Nos. H. 3, H. 6, H, 8, H. 10, H. 11, H. 16, H. 17, H. 20, H. 35, H. 40, H. 43, H. 44, and H. 56. 



II BROCA : Instructions craniologiques et craniom^triqnes; Paris, 1875; Planche vi. 



