Towards three o'clock in the afternoon of one October day in the year 1844, a man of sixty or thereabouts, whom anybody might have credited with more than his actual age, was walking along the Boulevard des Italiens with his head bent down, as if he were tracking some one. There was a smug expression about the mouth-he looked like a merchant who has just done a good stroke of business, or a bachelor emerging from a boudoir in the best of humors with himself; and in Paris this is the highest degree of self-satisfaction ever registered by a human countenance.