These caves are hollowed out of a very thick belt of cretaceous limestone. They date from different epochs, and each presents special characteristics which can easily be recognized. Some were used as burial-places, others as habitations. In the former the entrance is of irregular shape, the walls are roughly cut, and the work is of the most elementary description. The sepulchral eaves were simply closed by a large stone rolled into place and covered with rubbish, the better to hide the entrance. The shelters used to live in show much more careful work, and are divided into two unequal parts by a wall cut in the living rock. To get into the second partition one has to go down steps, cut in the limestone, and these steps are worn with long usage. The entrance was cut out of a massive piece of rock, left thick on purpose, and on either side of the opening the edges still show the rabbet which was to receive the door. Two small holes on the right and left were probably used to fix a bar across the front to strengthen the entrance. A good many of these eaves are provided with an opening for ventilation, and some skilful contrivances were resorted to for keeping out water. Inside we find different floors, shelves, and crockets cut in the chalk, and on the floors M. de Baye picked up shells, ornaments, and flints, which were lying just where their owners had left them. Very different is all this from the Vezère caves, and everything proves an undeniable improvement in the conditions of life. The most interesting of all the objects found in these caves are, however, the carvings; but few date from Neolithic times, and some archæologists have argued from their absence in favor of the displacement everywhere of old races by the incursion of new-corners. Some of these carvings represent hafted hatchets, the flint being painted black to make the raised design stand out better. Others represent human figures. In the Coizard Cave, for instance, was found a roughly outlined representation of a woman with a prominent nose, eyes indicated by black dots, highly developed breasts, but no lower limbs. A necklace adorns her throat, and a pendant hanging from this necklace is colored yellow. On the passage leading to the door is engraved another figure which was originally more accurately drawn than the others, but is not in such good preservation. In the Courjonnet Cave we see a woman with a bird’s bead; she was probably one of the _lares penates_, the protectors of the domestic hearth. We meet with this same goddess at Santorin, and at Troy, and on the shores of the Vistula, which is a very interesting ethnological fact.