With the exception of this general appearance of strength superior to that which is generally met with, the skeleton of the men of Furfooz and Grenelle strongly resembles that of men of the present day. The tibia in particular assumes the prismatic triangular form which we are accustomed to observe in them. We remark, nevertheless, the appearance of a character which we have as yet only noticed in the cavern of L’Homme-Mort, where we considered it to be a sign of crossing. The olecranon depression is often perforated in the races now under discussion. In Belgium M. Dupont found this disposition to exist in the men of the Lesse in the proportion of 30 per cent. M. Hamy carries it to 28 per cent, in the fossil man of Grenelle, and to 4·66 per cent. only in the French of the present day. IV. The races of Furfooz, coming after those whose history we have just sketched, must have come in contact, and sometimes have formed connections with them. The clearest demonstration of this fact is at Solutré, where, side by side with Cro-Magnon skulls, two heads were found belonging to the race of Grenelle. Intellectual and social development must have progressed almost equally among men united into a single tribe. Our brachycephali have, however, had their special centres of population where we can examine them in their home. The researches of M. Dupont have been chiefly devoted to Belgium and the valley of the Lesse. To give an idea of what the men of Furfooz were, we need do no more than reproduce an abridged account of all that the learned explorer of these caverns has said upon the subject. V. The men of the Lesse, like those of the Vézère, inhabited caverns. One of their complete stations comprised the grotto where they lived, and a funeral grotto. M. Dupont found them almost in juxtaposition at Furfooz, where the _Trou des Nutons_ presented all the characters of a human habitation, and the _Trou du Frontal_ those of a place of sepulture. These two localities alone would have furnished many materials for the history of these ancient populations. Nevertheless the _Trou de Chaleux_ excels them in this respect. It was long inhabited by man, who left there a considerable accumulation of that refuse which is now turned to such good account by science. The roof one day fell in; the inhabitants escaped, leaving all that was buried in their dwelling. Thus, when this heap of rubbish came to be disturbed by the pick-axe, all was found just as it had been left at the moment of the catastrophe, and it is with good reason that the Grotto of Chaleux has been called a little quaternary Pompeii.