In none of these six skulls is the patency of the frontal suture, which corresponds very usually to a wide receptacle for the frontal lobes of the brain, observable. On the other hand, the zygomata do not come into view, when the skull is held out so as to present its norma verticalis at arm’s length to one eye of the observer, with the invariability which might have been expected. In two only of these six skulls are both zygomata seen at the same time when the skull is held in this position; in three the zygoma of the left side only is seen; and in one neither zygoma comes into view. But these skulls, as is often the case in skulls of flesh-eating savage races, are of considerable density, and a greater thickness of walls as well as a greater development of the contents of a skull may prevent it from being phœnozygous. One other condition indeed, that of considerable development of the malar arch, which produces phœnozygy, is present in Bushmen, as in the skulls of other races exposed to the sun and glare, and other irritants of the eyes; but its working is countervailed by that of thickness of the cranial walls. All the Bushman skulls examined by Dr. Fritsch were broad in the sphenoparietal diameter (see his _Die Eingeborenen Süd-Afrika’s_, 1872, p. 413). With two exceptions, those constituted by the skull procured by Mr. Fairclough and that presented by Dr. Bleek, the supraciliary ridges and glabellæ are comparatively feebly developed. The parietal tubera, or the spots on the external surface of the cranium corresponding to them, are placed far back in all these crania, and what I have elsewhere spoken of at some length[72] as the antero-posterior index, is consequently high. The same remark, however, may be made of Zulu and other Abantu crania.