The confidence and good-will of Caroline had a magical effect upon the invalid. He fell asleep and rested peacefully till day. Caroline had seated herself near a table, and knew now the nature of his malady and how to care for it, for upon that table she had found a diagnosis of the case with simple, intelligible rules for its treatment signed by one of the first physicians of France. The Marquis, to relieve his brother from any anxiety he might have as to his manner of treating himself, had shown him that document invested with the authority of a great name, and the document had remained there under the hand, under the eyes of Caroline, who studied it very carefully. She perceived that the Marquis had been, since she had known him, living under a regimen quite opposed to the one there prescribed: he took no exercise, he ate stintingly, and went with too little sleep. She did not know but that this relapse would be mortal; but if it were not, she resolved to be on her guard in the future and to be bold enough to watch over his health, even if he still had that gloomy, cold manner toward her which she now attributed to an anguish altogether physical. The Duke returned before sunrise. He had not found the physician; he had to go and look for him at Évaux. Before starting thither, he wanted to see his brother. The dawn was streaking the horizon with its first lines of white when he noiselessly regained the apartment of the Marquis. The latter was then sleeping so soundly that he did not hear the ascending footsteps, and Caroline could go out to meet the Duke upon the stairway, so that he should utter no exclamation of surprise at sight of her. His surprise was indeed great when he saw her coming down toward him with her finger to her lips. He understood nothing of what had passed. He thought that the Marquis had concealed the truth from him, that she was aware of his love, his sorrow, and that she had come to console him. "Ah! my dear friend," taking her hands, "be at ease; he has confided all to me. You have come, you are good, you will save him;" and he carried Caroline's hands to his lips with genuine affection. "But," said she, slightly astonished, "knowing him to be so ill, why did you leave him to-night? And since you counted upon my care for him, why did you not tell me it was needed?"