Guelemer and Brujon were in the same dormitory. They had been placed, by way of precaution, on the lower story. Chance ordained that the heads of their beds should rest against the chimney.

Thénardier was directly over their heads in the top story known as Fine-Air. The pedestrian who halts on the Rue Culture-Sainte-Catherine, after passing the barracks of the firemen, in front of the porte-cochère of the bathing establishment, beholds a yard full of flowers and shrubs in wooden boxes, at the extremity of which spreads out a little white rotunda with two wings, brightened up with green shutters, the bucolic dream of Jean Jacques.

Not more than ten years ago, there rose above that rotunda an enormous black, hideous, bare wall by which it was backed up.

This was the outer wall of La Force.

This wall, beside that rotunda, was Milton viewed through Berquin.

Lofty as it was, this wall was overtopped by a still blacker roof, which could be seen beyond. This was the roof of the New Building. There one could descry four dormer-windows, guarded with bars; they were the windows of the Fine-Air.

A chimney pierced the roof; this was the chimney which traversed the dormitories.

The Bel-Air, that top story of the New Building, was a sort of large hall, with a Mansard roof, guarded with triple gratings and double doors of sheet iron, which were studded with enormous bolts. When one entered from the north end, one had on one’s left the four dormer-windows, on one’s right, facing the windows, at regular intervals, four square, tolerably vast cages, separated by narrow passages, built of masonry to about the height of the elbow, and the rest, up to the roof, of iron bars.

Thénardier had been in solitary confinement in one of these cages since the night of the 3d of February. No one was ever able to discover how, and by what connivance, he succeeded in procuring, and secreting a bottle of wine, invented, so it is said, by Desrues, with which a narcotic is mixed, and which the band of the Endormeurs, or Sleep-compellers, rendered famous.

There are, in many prisons, treacherous employees, half-jailers, half-thieves, who assist in escapes, who sell to the police an unfaithful service, and who turn a penny whenever they can.