It is interesting to establish the existence of such a similarity between the customs of men who were separated by vast tracts of land and an interval of many thousands of years. Immediately above the _Trou du Frontal_ there is a cave called _Trou Rosette_, in which the bones of three persons of various ages were found intermingled with the bones of reindeer and beavers; fragments of a blackish kind of pottery were also found there, which were hollowed out in rough grooves by way of ornamentation, and merely hardened in the fire. M. Dupont is of opinion that the three men whose remains were discovered were crushed to death by masses of rock at the time of the great inundation, traces of which may still be seen in the valley of the Lesse. By the falling in of its roof, which buried under a mass of rubbish all the objects which were contained in it at the time of the catastrophe and thus kept them in their places, the cave of Chaleux escaped the complete disturbance with which the above-mentioned caverns were visited. The bones of mammals, of birds, and of fish were found there; also some carved bones and horns of the reindeer, some fossil shells, which, as we have before observed, came from Champagne, and were used as ornaments; lastly, and chiefly, wrought flints numbering at least 30,000. In the hearth, which was placed in the middle of the cave, a stone was discovered with certain signs on it, which, up to the present time, have remained unexplained. M. Dupont, as we have previously stated, collected in the immediate vicinity about twenty-two pounds' weight of the bones of the water-rat either scorched or roasted; this proves that when a more noble and substantial food failed them, the primitive inhabitants of this country were able to content themselves with these small and unsavoury rodents. The two skulls which were found at Furfooz have been carefully examined by MM. Van Beneden and Pruner-Bey, who are both great authorities on the subject of anthropology. These skulls present considerable discrepancies, but Pruner-Bey is of opinion that they are heads of a male and female of the same race. In order to justify his hypothesis the learned anthropologist says, that there is often more difference between the skulls of the two sexes of the same race, than between the skulls of the same sex belonging to two distinct races. [Illustration: Fig. 73.--Skull found at Furfooz, by M. Édouard Dupont.] One of these skulls is distinguished by a projecting jaw; the other, which is represented in fig. 73, has jaws even with the facial outline. The prominent jaw of the first, which is the indication of a degraded race (like that of the negro), does not prevent its having a higher forehead and a more capacious cranium than the other skull. We find here an actual intermingling of the characteristics which belong to the inferior races with those peculiar to the Caucasian race, which is considered to be the most exalted type of the human species.