All extreme situations have their flashes, which at one moment blind, at another illumine us. Jean Valjean's desperate glance fell on the lamp-post in the blind alley. In those days there were no gaslights in the streets of Paris; at nightfall lamps were lit at regular distances, which were pulled up and down by a rope that crossed the street and fitted into a groove in a post. The end of the rope was kept in an iron box under the lantern, of which the lamp-lighter had the key, and the rope itself was protected by a metal case. Jean Valjean leaped across the street, burnt the lock of the box with the point of his knife, and a moment later was again by Cosette's side holding a rope. Such gloomy finders of expedients when struggling with fatality set rapidly to work. We have mentioned that the lamps were not lit on this night; the one in the blind alley therefore was naturally extinguished, and any one might have passed close without noticing that it was no longer in its place. The hour, the place, the darkness, Jean Valjean's preoccupation, his singular gestures, his coming and going, were all beginning to alarm Cosette. Any other child would have begun crying kindly long before; but she confined herself to pulling the skirt of his coat. The noise of the approaching patrol constantly became more distinct. "Father," she whispered, "I am frightened; who is coming?" "Silence," the unhappy man replied; "it is Madame Thénardier." The child trembled, and he added,-- "Do not say a word, but leave me to act: if you cry out or sob she will catch you and take you back again." Then, without hurry, but without doing anything twice over, with a firm and sharp precision, which was the more remarkable at such a moment, when the patrol and Javert might be instantly expected, he undid his cravat, fastened it under Cosette's armpits, while careful not to hurt her, fastened the rope to the cravat, took the other end in his teeth, took off his shoes and stockings, which he threw over the wall, and began raising himself in the corner of the wall with as much certainty as if he had cramping irons under his heels and elbows. Half a minute had not elapsed ere he was astride the coping. Cosette looked at him in stupor, without saying a word; for Jean Valjean's mention of the landlady's name had frozen her. All at once she heard Jean Valjean say to her in a very low voice,-- "Lean against the wall." She obeyed. "You must not say a word, or feel frightened," he continued.