Marcasse having aroused Blaireau by voice and gesture, watched all his movements. “Set your mind at rest,” he said with pride; “the old dog has not forgotten his old trade. If there is a hole, a hole as big as your hand, have no fear. Now, old dog! Have no fear.” Blaireau, indeed, after sniffing everywhere, persisted in scratching the wall where I had seen the apparition; he would start back every time his pointed nose came to a certain spot in the wainscotting; then, wagging his bushy tail with a satisfied air, he would return to his master as if to tell him to concentrate his attention on this spot. The sergeant then began to examine the wall and the woodwork; he tried to insinuate his sword into some crack; there was no sign of an opening. Still, a door might have been there, for the flowers carved on the woodwork would hide a skilfully constructed sliding panel. The essential thing was to find the spring that made this panel work; but that was impossible in spite of all the efforts we made for two long hours. In vain did we try to shake the panel; it gave forth the same sound as the others. They were all sonorous, showing that the wainscot was not in immediate contact with the masonry. Still, there might be a gap of only a few inches between them. At last Marcasse, perspiring profusely, stopped, and said to me: “This is very stupid; if we searched all night we should not find a spring if there is none; and however hard we hammered, we could not break in the door if there happened to be big iron bars behind it, as I have sometimes seen in other old country-houses.” “The axe might help us to find a passage,” I said, “if there is one; but why, simply because your dog scratches the wall, persist in believing that John Mauprat, or the man who resembles him, could not have come in and gone out by the door?” “Come in, if you like,” replied Marcasse, “but gone out--no, on my honour! For, as the servant came down I was on the staircase brushing my boots. As soon as I heard something fall here, I rushed up quickly three stairs at a time, and found that it was you--like a corpse, stretched out on the floor, very ill; no one inside nor outside, on my honour!