I crept forward, saying "Good dog!" very softly; but he suddenly withdrew his head and disappeared. I listened--I was not deaf--but certainly the pit was still. I heard a sound like the flutter of a bird's wings, and a hoarse croaking, but that was all. For a long while I lay close to the peephole, but not daring to move aside the red plants that obscured it. Once or twice I heard a faint pitter-patter like the feet of the dog going hither and thither on the sand far below me, and there were more birdlike sounds, but that was all. At length, encouraged by the silence, I looked out.