Page:Popular Science Monthly Volume 18.djvu/765

Rh The pure Negrito skull (Fig. 3) is sub-brachycephalic, having a mean index (cephalic, or horizontal) of 81·79; its capacity is from 1,310 to 1,535 cubic centimetres. The occipito-frontal curve is quite regular, and presents a depression over the forehead, another toward the third posterior of the sagittal suture, and an undulation at the level of the sinciput; passing the occipital protuberance, it turns sharply downward.



The frontal, narrow before, is well developed in the antero-posterior direction; the short length of the cranium corresponds with the shortness of the parietal and occipital bones.

In the face, the prominences of the brows are not very distinct, the space between the orbits is relatively considerable, the orbits are wide, almost square, the canine cavity is little marked, the prognathism is distinct in the middle alveolar region of the superior maxillary. The whole of the face is moderately elongated, showing a mean facial index of 67·17. The Mincopies, who live in the Andaman Islands, had already been studied by M. de Quatrefages, and his opinion that they almost exactly resemble the Aétas of the Philippine Islands is confirmed by the description of them in the "Crania Ethnica." The only difference is in a slightly higher elevation of the cranium, as is shown in the sketch.

Negritos whose history is fully described in this work are still