CHAPTER VI—THE FONTISJean Valjean found himself in the presence of a fontis.
This sort of quagmire was common at that period in the subsoil of the Champs-Élysées, difficult to handle in the hydraulic works and a bad preservative of the subterranean constructions, on account of its excessive fluidity. This fluidity exceeds even the inconsistency of the sands of the Quartier Saint-Georges, which could only be conquered by a stone construction on a concrete foundation, and the clayey strata, infected with gas, of the Quartier des Martyrs, which are so liquid that the only way in which a passage was effected under the gallery des Martyrs was by means of a cast-iron pipe. When, in 1836, the old stone sewer beneath the Faubourg Saint-Honoré, in which we now see Jean Valjean, was demolished for
