If we imagine Paris removed like a cover, the subterranean network of sewers, regarded from a birds'-eye view, would represent on either bank a sort of large branch grafted upon the river. On the right bank the encircling sewer will be the trunk of this branch, the secondary tubes the branches, and the blind alleys the twigs. This figure is only summary and half correct, as the right angle, which is the usual angle in subterranean ramifications of this nature, is very rare in vegetation. Our readers will form a better likeness of this strange geometric plan by supposing that they see lying on a bed of darkness some strange Oriental alphabet as confused as a thicket, and whose shapeless letters are welded to each other in an apparent confusion, and as if accidentally, here by their angles and there by their ends. The sewers and drains played a great part in the Middle Ages, under the Lower Empire and in the old East. Plague sprang from them and despots died of it. The multitudes regarded almost with a religious awe these beds of corruption, these monstrous cradles of death. The vermin-ditch at Benares is not more fearful than the Lion's den at Babylon. Tiglath-Pileser, according to the rabbinical books, swore by the sink of Nineveh. It was from the drain of Munster that John of Leyden produced his false moon, and it was from the cesspool-well of Kekhscheb that his Oriental menæchmus, Mokanna, the veiled prophet of Khorassan, brought his false sun. The history of men is reflected in the history of the sewers, and the Gemoniæ narrated the story of Rome. The sewer of Paris is an old formidable thing, it has been a sepulchre, and it has been an asylum. Crime, intellect, the social protest, liberty of conscience, thought, robbery, all that human laws pursue or have pursued, have concealed themselves in this den,--the Maillotins in the fourteenth century, the cloak-stealers in the fifteenth, the Huguenots in the sixteenth, the illuminés of Morin in the seventeenth, and the Chauffeurs in the eighteenth. One hundred years ago the nocturnal dagger-issued from it, and the rogue in danger glided into it; the wood had the cave and Paris had the drain. The Truanderie, that Gallic _picareria_, accepted the drain as an annex of the Court of Miracles, and at night, cunning and ferocious, entered beneath the Maubuée vomitory as into an alcove. It was very simple that those who had for their place of daily toil the Vide-Gousset lane, or the Rue Coupe-Gorge, should have for their nightly abode the ponceau of the Chemin-Vert or the Hure-poix cagnard. Hence comes a swarm of recollections, all sorts of phantoms haunt these long solitary corridors, on all sides are putridity and miasma, and here and there is a trap through which Villon inside converses with Rabelais outside.