The emperor, according to this account, had carried with him, ever since the retreat from Moscow, a packet containing a preparation of opium, made up in the same manner with that used by Condorcet for self-destruction. His valet-de-chambre, in the night betwixt the 12th and 13th of April, heard him arise and pour something into a glass of water, drink, and return to bed. In a short time afterwards, the man's attention was called by sobs and stifled groans--an alarm took place in the chateau--some of the principal persons were roused, and repaired to Napoleon's chamber. Yvan, the surgeon, who had procured him the poison, was also summoned; but hearing the emperor complain that the operation of the poison was not quick enough, he was seized with a panic-terror, and fled from the palace at full gallop. Napoleon took the remedies recommended, and a long fit of stupor ensued, with profuse perspiration. He awakened much exhausted, and surprised at finding himself still alive; he said aloud, after a few moments' reflection, "Fate will not have it so," and afterwards appeared reconciled to undergo his destiny, without similar attempts at personal violence. There is, as we have already hinted, a difference of opinion concerning the cause of Napoleon's illness; some imputing it to indigestion. The fact of his having been very much indisposed is, however, indisputable. A general of the highest distinction transacted business with Napoleon on the morning of the 13th of April. He seemed pale and dejected, as from recent and exhausting illness. His only dress was a night-gown and slippers, and he drank from time to time a quantity of tisan, or some such liquid, which was placed beside him, saying he had suffered severely during the night, but that his complaint had left him. After this crisis, and having ratified the treaty which his mareschals had made for him. Napoleon appeared more at his ease than he had been for some time before, and conversed frankly with his attendants upon the affairs of France. NAPOLEON TAKES LEAVE OF THE IMPERIAL GUARD.