‘One evening,’ he said, ‘I was walking down Bond Street about five o’clock. There was a terrific crush of carriages, and the traffic was almost stopped. Close to the pavement was standing a little yellow brougham, which, for some reason or other, attracted my attention. As I passed by there looked out from it the face I showed you this afternoon. It fascinated me immediately. All that night I kept thinking of it, and all the next day. I wandered up and down that wretched Row, peering into every carriage, and waiting for the yellow brougham; but I could not find _ma belle inconnue_, and at last I began to think she was merely a dream. About a week afterwards I was dining with Madame de Rastail. Dinner was for eight o’clock; but at half-past eight we were still waiting in the drawing-room. Finally the servant threw open the door, and announced Lady Alroy. It was the woman I had been looking for. She came in very slowly, looking like a moonbeam in grey lace, and, to my intense delight, I was asked to take her in to dinner. After we had sat down, I remarked quite innocently, “I think I caught sight of you in Bond Street some time ago, Lady Alroy.” She grew very pale, and said to me in a low voice, “Pray do not talk so loud; you may be overheard.” I felt miserable at having made such a bad beginning, and plunged recklessly into the subject of the French plays. She spoke very little, always in the same low musical voice, and seemed as if she was afraid of some one listening. I fell passionately, stupidly in love, and the indefinable atmosphere of mystery that surrounded her excited my most ardent curiosity. When she was going away, which she did very soon after dinner, I asked her if I might call and see her. She hesitated for a moment, glanced round to see if any one was near us, and then said, “Yes; to-morrow at a quarter to five.” I begged Madame de Rastail to tell me about her; but all that I could learn was that she was a widow with a beautiful house in Park Lane, and as some scientific bore began a dissertation on widows, as exemplifying the survival of the matrimonially fittest, I left and went home. ‘The next day I arrived at Park Lane punctual to the moment, but was told by the butler that Lady Alroy had just gone out. I went down to the club quite unhappy and very much puzzled, and after long consideration wrote her a letter, asking if I might be allowed to try my chance some other afternoon. I had no answer for several days, but at last I got a little note saying she would be at home on Sunday at four and with this extraordinary postscript: “Please do not write to me here again; I will explain when I see you.” On Sunday she received me, and was perfectly charming; but when I was going away she begged of me, if I ever had occasion to write to her again, to address my letter to “Mrs. Knox, care of Whittaker’s Library, Green Street.” “There are reasons,” she said, “why I cannot receive letters in my own house.”