FROM THE NEW HEBRIDES. CAMERON. 417 



tie latter ought really to be regarded as an ancestral type. 

 1 he calvarial height in both No. 1 and No. 2 skulls, as Fig. 4 

 si ows, was found to be as great as that of a Canadian skull. 

 Therefore what might not inaptly be termed the intellectual 

 expansion of the skull of the higher races has been practically 

 ccnfined to the frontal segment of the cranial arc. This 

 ccnclusion certainly sujjports the current idea that the 

 higher intellectual centres of the brain are mainly centered 

 in the frontal lobes. 



The Palato-maxiUary Index. — The palato-maxillary index 

 was 115.4 in No. 1 skull which therefore proved to be brachy- 

 uranic. In No. 2 it was found to be 111.9 thus classing this 

 skull as mesuranic. The palate in No. 1 skull was therefore 

 relatively broader than that of No. 2, though not absolutely 

 so, seeing that its measurement was 6.35 cm., that of No. 2 

 being 6.55 cm. The im.portance and significance of this 

 index have not been worked out yet wdth any degree of 

 certainty, so that it will be sufficient to place the above 

 measurements on record for future reference and comparison. 



The Bregmatic Avgle. — This is an angular cranial measure- 

 ment which has likewise come to assume a position full of 

 importance and significance only within comparatively 

 recent years. It demonstrates in a very effective and telling 

 manner, the degree of flattening or otherwise of the frontal 

 portion of the cranial arc. As it is not mentioned much 

 in books, and as there appears to be some ambiguity regarding 

 its exact mode of application, and method of measurement, 

 I may state that I adopted the plan utilised by Schwalbe^'^^ 

 in his study of the Neanderthal skull. He took the angle 

 between two lines, one passing from the glabella to the inion, 

 and the other from the glabella to the bregma, as shown in 

 Figure 6, where the line IG is the occipito-glabellar, and BG 

 the bregma-glabellar. The bregmatic angle was found to 

 be 59° in No. 1 skull, and 55° in No. 2. These results were 

 thus well within the range of variation for modern hominidiE, 



