A week or two ago we made a vain and unprofitable expedition into the City for the purpose of seeing "La Sainte Chapelle;" sainte to all good Catholics from its having been built by Louis Neuf (St. Louis) expressly for the purpose of receiving all the ultra-extra-super-holy relics purchased by St. Louis from Baldwin Emperor of Constantinople, and almost equally sainte to us heretics from having been the scene of Boileau's poem. Great was our disappointment at being assured, by several flitting officials to whom we addressed ourselves in and about Le Palais de Justice, that admission was not to be obtained--that workmen were employed upon it, and I know not what besides; all, however, tending to prove that a long, lingering look at its beautiful exterior was all we had to hope for. In proportion to this disappointment was the pleasure with which I received an offer from a new acquaintance to conduct us over the Palais de Justice, and into the sacred precints of La Sainte Chapelle, which in fact makes a part of it. My accidental introduction to M. J***, who has not only shown us this, but many other things which we should probably never have seen but for his kindness, has been one of the most agreeable circumstances which have occurred to me in Paris. I have seldom met a man so "rempli de toutes sortes d'intelligences" as is this new Parisian acquaintance; and certainly never received from any stranger so much amiable attention, shown in so profitable a manner. I really believe he has a passe-partout for everything that is most interesting and least easy of access in Paris; and as he holds a high judicial situation, the Palais de Justice was of course open to him even to its remotest recesses: and of all the sight-seeing mornings I remember to have passed, the one which showed me this interesting edifice, with the commentary of our deeply-informed and most agreeable companion, was decidedly one of the most pleasant. There is but one drawback to the pleasure of having met such a man--and this is the fear that in losing sight of Paris we may lose sight of him also. The Palais de Justice is from its extent alone a very noble building; but its high antiquity, and its connexion with so many points and periods of history, render it one of the most interesting buildings imaginable. We entered all the courts, some of which appeared to be in full activity. They are in general large and handsome. The portrait of Napoleon was replaced in one of them during the Three Days, and there it still remains: the old chancellor d'Auguesseau hangs opposite to him, being one of the few pictures permitted to retain their places. The vacant spaces, and in some instances the traces of violence with which others have been removed, indicate plainly enough that this venerable edifice was not held very sacred by the patriots of 1830.