| OCR Text |
Show 51 Measurements. e. em. Capacity 1325 mm. Length * 168 Breadth 144 Breadth of frontal 119 Height 135 Frontal arch 319 Parietal arch 346 Occipital arch 234 Longitudinal arch 359 Circumference 508 Length of frontal 123 Length of parietal 134 Length of occipital 160 Zygomatic diameter 144 Skull aVo. 2.- Plates 25, [ Fig. 2,) 26, and 27. , According to its features, the skull designated by No. 2 is that of a woman, and is, with the exception of the zygomatic bones, which are broken, well preserved. If, among the Indians, the eruption of the last molars takes plaice at the same time as in our race, the skull in question cannot have belonged to a person much younger or older than seventeen.* In general, the skull is delicately built, being rather small, showing smooth surfaces and weak muscular insertions. Viewed from above, it presents outlines similar to the skull previously described, but while the latter is deformed on its left side, the one in question is compressed on its right aud is asymmetrical in a far higher degree. In a profile view we notice above all, highly developed prognathism, a rather low forehead, and the outline of the occiput to be nearly straight. This latter fact is brought to view more strikingly if we look upon the right side of the skull, where we can lay almost a straight line from near the tuber over the surface of the parietal to the mastoid process, touching within a few millimeters the lambdoidal suture. If we measure the distance from the glabella to the left superior curved line of the occiput, it will be l""^ greater than if measured between the same points on the opposite side, thus showing clearly the asymmetry of the skull. A view from behind exhibits this less than one from the base, the latter revealing a distortion extending from the right side of the occipital to the narrow and elongated palate process of the jnaxilla, which is pressed forward. As in almost every instance of prognathism, the foramen magnum is thrown backward. This is, however, not only due to the protruding position of the upper maxilla, but also to a great extent to the flattening of the occiput, causing the occipital bone to turn upward almost abruptly within about half a centimeter from the posterior margin of the foramen magnum, that is on the right side of the skull, there being a little more space on the left. Both posterior condyloid foramina are well developed, the right one* being larger than the left. The muscular insertions on the left side of the occipital are more strongly marked thau those of the right, especially the places of insertion of the complexus and the rectus capitis. The protuberance is * Aa puberty takes place sooner among Indians than among white men in general, * e may conclude that the eruption of the last molars occurs earlier with the former races than with the latter. |
