"In less than a minute I was aware, by a slight rattling of the grate-hinges, that something was pushing against the door; but I did not move. I knew that I was safe. The room in which I lay was a prison dungeon, and in it, in the olden times, it is said, men had been left to perish. Escape or communication with the outer world was impossible. A little light and air came through a narrow slit in the wall, and the door could not be forced.
"I knew that the invisible dog, or whatever it was, could not get in unless the door was open. I had frequently noticed that when he entered a room it was through an open door, and I sometimes knew of his approach by seeing an unlatched door open without visible cause; so, feeling secure for the present, I lay and gasped and panted.
"After the lapse of a few hours, however, I was seized by a new terror. How was I ever to get out of this horrible dungeon? Even if I made up my mind to face the dog, trusting that he had recovered from his momentary anger, I had no means of opening the door, and as to making any one hear me I knew that was impossible.
"I had no hope that my servants would seek me here. I had not seen any one when I ran into the tower, and if they should discover that I was in this dungeon, how could they open the door? The key was in my father's possession. He had taken it to Vienna to exhibit it as a curiosity to some of his mechanical friends. He believed that there was not such another key in the world. I was in the habit of making long absences from the castle, and if I should be looked for I believed that the tower would be the last place visited.
"Night came on; the little light in the room vanished, and, hungry, thirsty, and almost hopeless, I fell asleep.
"During the night there was a most dreadful storm. The thunder roared, the lightning flashed through the slit in the wall, and the wind blew with such terrific violence that the tower shook and trembled. After a time I heard a tremendous crash as of falling walls, and then another, and now I felt the wind blowing into my prison.
"There was no further sleep for me. Trembling with a fearful apprehension of what might happen next, I cowered against the wall until the day broke, and then I perceived that in front of me was a great hole in the wall of the dungeon, which extended for more than a yard above the floor. I sat and gazed at this until the light became stronger, and then I cautiously approached the aperture and looked out. Nearly the whole of the castle lay in ruins before me!
"It was easy to see what had happened. The storm had demolished the crumbling walls of the old building, and the tower, itself frail and tottering, stood alone, high above the prostrate ruins. If the winds should again arise it must fall, and at any moment its shaken foundations might give way beneath it.
"Through the hole in the wall, which had been caused by the tearing away of some of the connection between the tower and main building, I could look down on the ground below, covered with masses of jagged stone; but there was no way in which I could get down. I could not descend that perpendicular wall. If I leaped out, death would be certain.
"As I crouched at the opening I felt the head of a dog pushed against me. A spasm of terror ran through me, but the moment the creature began to lick my hands I knew that I had nothing to fear from him. Instantly my courage returned. I felt that he was my protector. I patted his head and he renewed his caresses.