Edward was surprised to find himself standing by the open window when he had exhausted the train of thought that the recognition put in motion, and counting his heart-beats, ninety to the minute. By that curious power or weakness of certain minds his thoughts ran entirely from the matter in hand along the lines of a lecture his friend Virdow as Jean had delivered, the theory of which was that organic heart disease, unless fastened to its victim by inheritance, is always a mental result. If a mere thought or combination of thoughts could excite, a thought could depress. It was plain; he would write to Virdow confirming his theory. Then he became conscious that the moon hung like a plate of silver in the vast sky space of the east and that her light was flashed back by many little points in the city beneath him--a gilt ball, a vane, a set of window glasses, and the dew-wet slates of a modern roof. One white spot was visible in the yard in front, white and pale as the moon when the vapor had dispersed but set immovably. As he idly sought to unravel its little secret, it simply became a part of the shadow and invisible, but he felt that some one was looking up at him; and suddenly he saw the slender figure of a man pass, cross the gravel walk and vanish in the shrubbery on the left. Edward did not cry out; he stood musing upon the fact, and lo, there came a glitter of rosy light along the horizon; the moon had vanished overhead, and sound arose in confused murmurs from the dull heaps of houses in the valley. He saw again at the moment, over the eastern hills, the face of a girl as she stood calling her pets, and felt her eyes upon him. When he awoke that day he found the sun far beyond the zenith and he lay revolving in his mind the events of the night; to his surprise much of the weight was gone and in its place was interest, the like of which he had never before known. An object in life had suddenly been developed and instinctively he felt that the study of this new mystery would lead to a knowledge of himself and his past. The first thing to be done was to again see the stranger who had invaded his library, and carry his investigation as far as this person would permit. This in mind, he dressed himself with care and descended into the dining-room. In a few moments his breakfast was served. Upon hearing his inquiry for Rita, Ben, the butler, retired and presently the woman, grave, and after a few words quiet, took his place. Before speaking Edward noticed her closely again. About fifty years of age, perhaps less, she stood as erect and rigid as an Indian, her black hair without a kink. There was an easy dignity in her attitude, hardly the pose of a slave, or one who had been. But in her face was the sadness of personal suffering, and in her voice a tone he had noticed at first, an echo of some depressing experience, it seemed to him.