At the beginning of the present century the sewer of Paris was still a mysterious spot. Mud can never be well famed, but here the ill reputation extended almost to terror. Paris knew confusedly that it had beneath it a grewsome cave; people talked about it as of that monstrous mud-bed of Thebes, in which centipedes fifteen feet in length swarmed, and which could have served as a bathing-place for Behemoth. The great boots of the sewers-men never ventured beyond certain known points. It was still very close to the time when the scavengers' carts, from the top of which St. Foix fraternized with the Marquis de Créqui, were simply unloaded into the sewer. As for the cleansing, the duty was intrusted to the showers, which choked up rather than swept away. Rome allowed some poetry to her cloaca, and called it the Gemoniæ, but Paris insulted its own, and called it the stench-hole. Science and superstition were agreed as to the horror, and the stench-hole was quite as repugnant to hygiene as to the legend. The goblin was hatched under the fetid arches of the Mouffetard sewer: the corpses of the Marmousets were thrown into the Barillerie sewer: Fagot attributed the malignant fever of 1685 to the great opening of the Marais sewer, which remained yawning until 1833 in the Rue St. Louis, nearly opposite the sign of the Messager Galant. The mouth of the sewer in the Rue de la Mortellerie was celebrated for the pestilences which issued from it; with its iron-pointed grating that resembled a row of teeth it yawned in this fatal street like the throat of a dragon breathing hell on mankind. The popular imagination seasoned the gloomy Parisian sewer with some hideous mixture of infinitude: the sewer was bottomless, the sewer was a Barathrum, and the idea of exploring these leprous regions never even occurred to the police. Who would have dared to cast a sound into this darkness, and go on a journey of discovery in this abyss? It was frightful, and yet some one presented himself at last. The cloaca had its Christopher Columbus.