Before looking at Neanderthal man as a whole, we may turn our attention especially to a number of these peculiar features of the race. All the earliest observers were impressed by the heavy, overhanging brows and retreating forehead. In recent man there is often a decided prominence above the eyes, from the glabella or median point above the nose outward toward each side, but generally the outer third of the margin of these prominences turns upward beneath the outer line of the eyebrows. In the Neanderthals, on the contrary, these prominences beneath the eyebrows surround the whole upper edge of the eye socket, extending outward around the external borders of the forehead, so that they may be called '_tori supraorbitales_'; the extent of this prominent ridge above and to the sides forms a veritable roof over the eye sockets, which appear like two deep, lateral caverns. Such lateral prominences do occur, though rarely, in recent man; they are observed, for example, in certain Australians. [Illustration: FIG. 113. Skulls of a chimpanzee (left), of La Chapelle-aux-Saints (centre), and of a modern Frenchman (right), showing the gradual disappearance of the eyebrow ridges and projecting face. After Boule.] The front view of the Neanderthal face, as seen in the female Gibraltar skull, in which these eyebrow ridges are by no means so prominent as in the male skulls, is no less remarkable for the great height of the face as compared with the flatness of the forehead. Placing the skull side by side with that of the Australian,(50) we observe at once the enormous difference in the proportions of the face and the cranium in these two types, although the Australian represents one of the lowest existing races of _Homo sapiens_; we observe in the Gibraltar skull the very wide space between the eyes and the very large size of the narial opening, which indicate a broad, flattened nose; there is a correspondingly long space between the bottom of the narial opening and the line for the insertion of the incisor teeth, indicating a very long upper lip. The jaw is less powerful than that of the Heidelberg man. The Heidelberg jaw we have seen to be distinguished by its general strength and clumsiness and its lack of chin, or rather a chin without the slightest indication of a prominence; on the inside of this very thick, rounded chin plate, the characteristic chin spine (_spina mentalis_) is lacking; instead, a double groove is present as the point of attachment for the muscles which connect the chin and tongue with the hyoid bone; the ascending process for the attachment of the muscles of the jaw is seen to be unusually broad, 60 mm., in contrast to about 37 mm. in the recent jaw; finally, the condyle for attachment with the skull is particularly large.(51)