Caves which, during the quaternary epoch, have served as dens for wild animals, are very numerous. Experienced _savants_ are enabled to recognise them by various indications. The bones they contain are never fractured; but it may be seen that they have been gnawed by carnivorous animals, as they still bear the marks of their teeth. Into these retreats the cave-lion (_Felis spelæa_) and the hyæna (_Hyæna spelæa_) were accustomed to drag their prey, in order there to tear it to pieces and devour it, or divide it into portions for their young ones. In fact, in these caverns, excrements of the hyæna mixed with small and undigested bones are often found. The cave bear retired into the same retreats, but he probably only came there to pass the period of his hibernal sleep. Lastly, the same dens no doubt offered a refuge to sick or dying animals, who resorted thither in order to expire in peace. We have a proof of this in the traces of wounds and caries on some of the bones of animals found by Schmerling in the caverns of the Meuse; also in the skull of a hyæna, the median ridge of which had been bitten and appeared to be half healed. Those caverns which formed a shelter for primitive man are, like the preceding ones, to be recognised by a mere inspection of the bones contained in them. The long bones of the ox, horse, stag, rhinoceros, and other quadrupeds which formed the food of man during the quaternary epoch, are always split; and they are all broken in the same way, that is, lengthwise. The only cause for their having been split in this manner must have been the desire of extracting the marrow for the purpose of eating. Such a mode of breaking them would never have been practised by any animal. This apparently trivial circumstance is, however, of the highest importance. In fact, it leads to the following conclusion: "That man, having eaten large mammals of species now extinct, must have been contemporary with these species." We shall now proceed to examine the caverns which were used as burial-places for man. To M. Édouard Lartet, the celebrated palæontologist, the honour must be ascribed of having been the first to collect any important data bearing on the fact that caverns were used for burial-places by the primitive man of the great bear and mammoth epoch. We have thus been led to discover the traces of a funeral custom belonging to the man of these remote ages; we allude to the _funeral banquet_. The source of this information was the discovery of a pre-historic burial-place at Aurignac (Haute-Garonne), of which we have given an account in the Introduction to this work, which, however, we must again here refer to.