"The point," says Mr Brown, "at which he wished to commence his new investigations was Marseilles; but the extreme jealousy of the French government respecting their Levant trade, had long kept the lazaretto of that port carefully concealed from the eye of every foreigner; but, as Mr Howard's object was such as ought to have awakened neither political nor commercial jealousy in any one, Lord Caermarthen, then secretary of state for foreign affairs, made an application to the French minister for permission for him to view this celebrated building. After waiting some time at the Hague, in expectation of its arrival, he went to Utrecht to visit his friend Dr Brown, at whose house he received a letter from his lordship, informing him, not only that the request he preferred had been peremptorily refused, but that he must not think of entering France at all, as, if he did, he would run a risk of being committed to the Bastille. Howard, however, was not to be deterred. He started immediately for Paris. At Paris, "having gone to bed, according to his usual custom, about ten o'clock, he was awaked between twelve and one, by a tremendous knocking at his room door, which, starting up, in somewhat of an alarm, he immediately opened; and, having returned to bed, he saw the chambermaid enter with a candle in each hand, followed by a man in a black coat, with a sword by his side, and his hands enveloped in an enormous muff. This singular personage immediately asked him if his name was not Howard. Vexed at this interruption, he hastily answered, 'Yes--and what of that?' He was again asked if he had not come to Paris in the Brussels diligence, in company with a man in a black wig? To this question he returned some such peevish answer, as that he paid no attention to such trifles; and his visitor immediately withdrew in silence. Not a little alarmed at this adventure, though losing none of his self-possession, and being unable to compose himself to sleep, Mr Howard got up; and, having discharged his bill the night before, took his small trunk, and, removing from this house, at the regular hour of starting took his seat in the diligence, and set off for Lyons." Such is the narrative of Mr Brown. It has been supposed that this midnight visitor was an officer of the police, and that, had Howard remained a few hours longer at his hotel, he would have been arrested. But some mystery still hangs over this adventure. Howard, in one of his letters, alluding to it, says that he had since learnt who his strange visitor was, and adds that "he had had a narrow escape;" and his biographer Mr Brown tells us that--