To direct himself was difficult, for the sewers represent, so to speak, the outline of the streets standing over them. There were in the Paris of that day two thousand two hundred streets, and imagine beneath them that forest of dark branches called the sewer. The system of sewers existing at that day, if placed end on end, would have given a length of eleven leagues. We have already said that the present network, owing to the special activity of the last thirty years, is no less than sixty leagues. Jean Valjean began by deceiving himself; he fancied that he was under the Rue St. Denis, and it was unlucky that he was not so. There is under that street an old stone drain, dating from Louis XIII., which runs straight to the collecting sewer, called the Great Sewer, with only one turn on the right, by the old Cour des Miracles, and a single branch, the St. Martin sewer, whose four arms cut each other at right angles. But the passage of the Little Truanderie, whose entrance was near the Corinth wine-shop, never communicated with the sewer of the Rue St. Denis; it falls into the Montmartre sewer, and that is where Jean Valjean now was. There opportunities for losing himself were abundant, for the Montmartre drain is one of the most labyrinthian of the old network. Luckily Jean Valjean had left behind him the sewer of the markets, whose geometrical plan represents a number of entangled top-gallant-masts; but he had before him more than one embarrassing encounter, and more than one street corner--for they are streets--offering itself in the obscurity as a note of interrogation. In the first place on his left, the vast Plâtrière sewer, a sort of Chinese puzzle, thrusting forth and intermingling its chaos of T and Z under the Post Office, and the rotunda of the grain-markets, as far as the Seine, where it terminates in Y; secondly, on his right the curved passage of the Rue du Cadran, with its three teeth, which are so many blind alleys; thirdly, on his left the Mail branch, complicated almost at the entrance by a species of fork, and running with repeated zigzags to the great cesspool of the Louvre, which ramifies in every direction; and lastly, on his right the blind alley of the Rue des Jeûneurs, without counting other pitfalls, ere he reached the engirdling sewer, which alone could lead him to some issue sufficiently distant to be safe.