The total number of entrances is sixty-three, many of them outside the city; these galleries are sufficiently well ventilated by numerous openings, and dry. The visitors traverse a certain route, in a general southerly direction, inspecting the various curiosities on the road and the great _Ossuaire_. In the latter are included several of these,--the _Fontaine de la Samaritaine_, so called from an inscription which recalls the words of the Saviour to the Samaritan woman; the _Tombeau de Gilbert_, which is only a column supporting the roof to which was given the form of a sepulchral monument; the _Lampe sépulcrale_, the _Crypte de Saint-Laurent_, similar constructions, and the geological collection formed by M. Héricart de Thury, chief engineer of mines and inspector-general of quarries in 1810, which contains specimens of all the earths and minerals encountered in excavating the quarries. [Illustration: UNDERGROUND WARD-ROOM OF THE MEDICAL STUDENTS OF THE HOSPICE COCHIN, IN THE CATACOMBS. After a drawing by Henri Bellery-Desfontaines.] There were formerly to be seen in the Samaritan fountain numerous red fish, which were placed there in 1813 and thrived, but have now disappeared. The quarries are not without animal life,--in the region of the Jardin des Plantes have been found various insects, species of coleoptera, myriapod and thysanoura, and several small crustacea, all more or less blind. One of these latter, a species of small crayfish, inhabits the waters of a little stream which traverses the Ossuaire. The bones of the combatants of 1789 and 1790, and those of the victims of September, 1792, are collected and arranged by themselves in this ossuary. The walls of the galleries are set off with numerous quotations drawn from sacred literature and engraved on pillars in French, Latin, Greek, Italian, and Swedish. One of the most remarkable of these curiosities, one which was the favorite show-place of the young doctors of the Cochin when they had guests and sufficient candles, is now no longer to be seen. This was a representation of the fort of Port-Mahon, in which he had been imprisoned by the English, cut in the face of the rock in high relief by an old soldier of the king, named Lescure, who had become a stone-cutter after his retirement from the army. This is situated in the quarry of Port-Mahon, under another quarry in the quarter of the Tombe-Issoire, which was discovered by Lescure, who kept his discovery to himself and passed his leisure in executing this record of his past career. When it was completed, he began to talk, and in order to enable his visitors to reach it easily he undertook the construction of a stairway uniting the two quarries; he had scarcely commenced it, when the earth gave way, and the unfortunate artist was crushed in the débris.