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Show 53 Although the occipital bone is almost entirely wanting, it may still readily be seen that the skull had been deformed in a manner analogous to the two others, and as it seems, chiefly on its right side, as a view from above will demonstrate, although the depression of Use ooeipital region does not seem to have been as great as in either of the cases above mentioned. The outline of the cranium is more oval than that of No. 1 and No. 2, and appears somewhat flattened near the median line along the parietals. The superciliary ridges protrude very considerably beyond the general outline of the frontal, and in the same view, from above the zygomatic bones, the nasals and the upper maxillse may be seen to project. There are no traces left of the sagittal suture; the direction of the latter cannot even be detected if the skull be held against a strong light; but the coronal is plainly visible. As already stated, the occipital bone is almost entirely broken, there being left only a narrow piece of its opper portion, which measures about 9 centimeters in length. The right side of the skull is of a dark brown color, which is frequently noticed on bones exhumed from peat- bogs. An examination proved the coloring matter to be chiefly iron. Like the rest of the surface the right side, besides being colored, is covered by numerous fine cracks and grooves, i either produced by running water that dissolved the carbonate of lime of the osseous tissue, or by the roots of plants that assimilated the salts. The side under consideration has the exterior portion of the mastoid process, which is rather massive, preserved. Temporal ridge extremely developed; zygomatic prooess strong. Frontal bone receding almost as much as in some ancient Peruvian skulls that lie before me, and which are artificially deformed. Superciliary ridges very prominent; nasals strougly curved, aquiline; upper maxilla prognathic in aconsid-j erable degree. I In a front view the heavy superciliary ridges appear very marked ;* supraorbital arches strong; foramina large; anterior nasal spine J projecting; septum oblique, its posterior portion shifted toward the right from the median line. First left incisor partly decayed; crowns of the teeth, especially on that of the molars, ground down. Insertions of muscles of lower jaw strong; those of the left more developed than the right; mental process prominent. Height of ramus from angle to highest point of condyle, 6em. 8; sigmoid notch deep; distance between the outermost points of right and left condyles, 12OXD. 2. Measurements. com Capacity ntnt. Length Breadth 136 Breadth of frontal 119 Height Frontal arch Parietal arch Occipital arch Longitudinal arch.. Circumference Length of frontal.. Length of parietal, length of occipital. Zygomatic diameter Thanks to the kindness of Dr. A. Otis, who, with his usual liberality, placed the osteological collection of the United States Army Medical Museum at my disposal, I could examine the two skulls collected by 297 338 126 132 144 |
