The line of the sewer re-echoes, so to speak, the line of the streets which lie above it. There were then in Paris two thousand two hundred streets. Let the reader imagine himself beneath that forest of gloomy branches which is called the sewer. The system of sewers existing at that epoch, placed end to end, would have given a length of eleven leagues. We have said above, that the actual network, thanks to the special activity of the last thirty years, was no less than sixty leagues in extent.

Jean Valjean began by committing a blunder. He thought that he was beneath the Rue Saint-Denis, and it was a pity that it was not so. Under the Rue Saint-Denis there is an old stone sewer which dates from Louis XIII. and which runs straight to the collecting sewer, called the Grand Sewer, with but a single elbow, on the right, on the elevation of the ancient Cour des Miracles, and a single branch, the Saint-Martin sewer, whose four arms describe a cross. But the gut of the Petite-Truanderie the entrance to which was in the vicinity of the Corinthe wine-shop has never communicated with the sewer of the Rue Saint-Denis; it ended at the Montmartre sewer, and it was in this that Jean Valjean was entangled. There opportunities of losing oneself abound. The Montmartre sewer is one of the most labyrinthine of the ancient network. Fortunately, Jean Valjean had left behind him the sewer of the markets whose geometrical plan presents the appearance of a multitude of parrots’ roosts piled on top of each other; but he had before him more than one embarrassing encounter and more than one street corner—for they are streets—presenting itself in the gloom like an interrogation point; first, on his left, the vast sewer of the Plâtrière, a sort of Chinese puzzle, thrusting out and entangling its chaos of Ts and Zs under the Post-Office and under the rotunda of the Wheat Market, as far as the Seine, where it terminates in a Y; secondly, on his right, the curving corridor of the Rue du Cadran with its three teeth, which are also blind courts; thirdly, on his left, the branch of the Mail, complicated, almost at its inception, with a sort of fork, and proceeding from zig-zag to zig-zag until it ends in the grand crypt of the outlet of the Louvre, truncated and ramified in every direction; and lastly, the blind alley of a passage of the Rue des Jeûneurs, without counting little ducts here and there, before reaching the belt sewer, which alone could conduct him to some issue sufficiently distant to be safe.

Had Jean Valjean had any idea of all that we have here pointed out, he would speedily have perceived, merely by feeling the wall, that he was not in the subterranean gallery of the Rue Saint-Denis. Instead of the ancient stone, instead of the antique architecture, haughty and royal even in the sewer, with pavement and string courses of granite and mortar costing eight hundred livres the fathom, he would have felt under his hand contemporary cheapness, economical expedients, porous stone filled with mortar on a concrete foundation, which costs two hundred francs the metre, and the bourgeoise masonry known as à petits matériaux—small stuff; but of all this he knew nothing.

He advanced with anxiety, but with calmness, seeing nothing, knowing nothing, buried in chance, that is to say, engulfed in providence.

By degrees, we will admit, a certain horror seized upon him. The gloom which enveloped him penetrated his spirit. He walked in an enigma. This aqueduct of the sewer is formidable; it interlaces in a dizzy fashion. It is a melancholy thing to be caught in this Paris of shadows. Jean Valjean was obliged to find and even to invent his route without seeing it. In this unknown, every step that he risked might be his last. How was he to get out? should he find an issue? should he find it in time? would that colossal subterranean sponge with its stone cavities, allow itself to be penetrated and pierced? should he there encounter some unexpected knot in the darkness? should he arrive at the inextricable and the impassable? would Marius die there of hemorrhage and he of hunger? should they end by both getting lost, and by furnishing two skeletons in a nook of that night? He did not know. He put all these questions to himself without replying to them. The intestines of Paris form a precipice. Like the prophet, he was in the belly of the monster.

All at once, he had a surprise. At the most unforeseen moment, and without having ceased to walk in a straight line, he perceived that he was no longer ascending; the water of the rivulet was beating against his heels, instead of meeting him at his toes. The sewer was now descending. Why? Was he about to arrive suddenly at the Seine? This danger was a great one, but the peril of retreating was still greater. He continued to advance.

It was not towards the Seine that he was proceeding. The ridge which the soil of Paris forms on its right bank empties one of its watersheds into the Seine and the other into the Grand Sewer. The crest of this ridge which determines the division of the waters describes a very capricious line. The culminating point, which is the point of separation of the currents, is in the Sainte-Avoye sewer, beyond the Rue Michel-le-Comte, in the sewer of the Louvre, near the boulevards, and in the Montmartre sewer, near the Halles. It was this culminating point that Jean Valjean had reached. He was directing his course towards the belt sewer; he was on the right path. But he did not know it.

Every time that he encountered a branch, he felt of its angles, and if he found that the opening which presented itself was smaller than the passage in which he was, he did not enter but continued his route, rightly judging that every narrower way must needs terminate in a blind alley, and could only lead him further from his goal, that is to say, the outlet. Thus he avoided the quadruple trap which was set for him in the darkness by the four labyrinths which we have just enumerated.

At a certain moment, he perceived that he was emerging from beneath the Paris which was petrified by the uprising, where the barricades had suppressed circulation, and that he was entering beneath the living and normal Paris. Overhead he suddenly heard a noise as of thunder, distant but continuous. It was the rumbling of vehicles.

He had been walking for about half an hour, at least according to the calculation which he made in his own mind, and he had not yet thought of rest; he had merely changed the hand with which he was holding Marius. The darkness was more profound than ever, but its very depth reassured him.