We walked down Piccadilly, and turned into, beyond all comparison, the most handsome street I ever saw. The Toledo of Naples, the Corso of Rome, the Kohlmarket of Vienna, the Rue de la Paix and Boulevards of Paris, have each impressed me strongly with their magnificence, but they are really nothing to Regent-street. I had merely time to get a glance at it before dark; but for breadth and convenience, for the elegance and variety of the buildings, though all of the same scale and material, and for the brilliancy and expensiveness of the shops, it seemed to me quite absurd to compare it with any thing between New York and Constantinople--Broadway and the Hippodrome included. It is the custom for the king's tradesmen to illuminate their shops on his majesty's birth-night, and the principal streets on our return were in a blaze of light. The crowd was immense. None but the lower order seemed abroad, and I cannot describe to you the effect on my feelings on hearing my own language spoken by every man, woman and child about me. It seemed a completely foreign country in every other respect, different from what I had imagined, different from my own and all that I had seen, and coming to it last, it seemed to me the farthest off and strangest country of all--and yet the little sweep, who went laughing through the crowd, spoke a language that I had heard attempted in vain by thousands of educated people, and that I had grown to consider next to unattainable by others, and almost useless to myself. Still, it did not make me feel at home. Every thing else about me was too new. It was like some mysterious change in my own ears--a sudden power of comprehension, such as a man might feel who was cured suddenly of deafness. You can scarcely enter into my feelings till you have had the changes of French, Italian, German, Greek, Turkish, Illyrian, and the mixtures and dialects of each, rung upon your hearing almost exclusively, as I have for years. I wandered about as if I were exercising some supernatural faculty in a dream. A friend in Italy had kindly given me a letter to lady Blessington, and with a strong curiosity to see this celebrated lady, I called on her the second day after my arrival in London. It was "deep i' the afternoon," but I had not yet learned the full meaning of "town hours."--"Her ladyship had not come down to breakfast." I gave the letter and my address to the powdered footman, and had scarce reached home when a note arrived inviting me to call the same evening at ten.