The health of the minister began rapidly to fail. He became emaciate, languid, and deeply depressed. A few subsequent interviews with the king satisfied him that his disgrace and ruin were decided upon. Indeed, the king had already drawn up the _lettre de cachet_ which was to consign him to the Bastile. About the middle of June, 1691, Louvois met the king in his council chamber, and, though the monarch was unusually complaisant, Louvois so thoroughly understood him that he retired to his residence in utter despair. Scarcely had he entered his apartment ere he dropped dead upon the floor. Whether his death were caused by apoplexy, or by poison administered by his own hand or that of others, can never be known. The king forbade all investigation of the case. Immediately after the death of Louvois, the king began to devote himself to business with an energy which he had never before manifested. Madame de Maintenon made some farther efforts to induce him to proclaim their marriage, but she soon perceived that nothing would induce him to change his resolution, and she accepted the situation. Louis now yielded more than ever to her influence; but he was always apprehensive that she might be engaged in some secret intrigue, and kept a vigilant watch over her. In letters to a friend, she gives some account of her splendid misery. "The king is perpetually on guard over me. I see no one. He never leaves my room. I am compelled to rise at five in the morning in order to write to you. I experience more than ever that there is no compensation for the loss of liberty." Again she writes, in reference to the weary routine of court life: "The princesses who have not attended the hunt will come in, followed by their cabal, and wait the return of the king in my apartment in order to go to dinner. The hunters will come in a crowd, and will relate the whole history of their day's sport, without sparing us a single detail. They will then go to dinner. Madame de Dangeau will challenge me, with a yawn, to a game of backgammon. Such is the way in which people live at court." It will be remembered that the king and queen had an only son, the dauphin. He was a man of ignoble character and of feeble mind. Still, as heir to the throne, he was, next to the king, the most important personage in the realm. The dauphin had three sons, who were in the direct line of succession to the crown. These were Louis, duke of Burgoyne, Philip, duke of Anjou, and Charles, duke of Berri.