From Madison Square to its lower end, the avenue is rapidly giving way to business, and its palatial residences are being converted into equally fine stores. Hotels and fashionable boarding-houses are thick in this quarter. Above Madison Square the street is devoted to private residences, and this part is _par excellence_ "The Avenue." [Picture: FIFTH AVENUE, NEAR TWENTY-FIRST STREET.] The principal buildings, apart from the residences, are the Brevoort House, at the corner of Clinton Place, an ultra fashionable hostelrie. On the opposite side of the street, at the northwest corner of Tenth street, is the handsome brown stone Episcopal Church of the Ascension, and on the southwest corner of Eleventh street is the equally handsome First Presbyterian Church, constructed of the same material. At the northeast corner of Fourteenth street is Delmonico's famous restaurant, fronting on both streets; and diagonally opposite, on the southwest corner of Fifteenth street, the magnificent house of the Manhattan Club. Not far from Delmonico's, and on the same side, is a brick mansion, adorned with a sign bearing a coat of arms, and the announcement that the ground floor is occupied by the eighth wonder of the world, "A Happy Tailor." At the southeast corner of Nineteenth street is the Fifth Avenue Presbyterian Church, in charge of the eloquent Dr. John Hall. Two blocks above, on the southwest corner of Twenty-first street, is the South Dutch Reformed Church, a handsome brown stone edifice, and diagonally opposite is the Glenham House. At the southwest corner of Twenty-second street, is the famous art gallery of Gonpil & Co., and immediately opposite the St. Germains Hotel. At Twenty-third street, Broadway crosses the avenue obliquely from northwest to southeast. On the left hand, going north, is the Fifth Avenue Hotel, and on the left Madison Square. The open space is very broad here, and is always thronged with a busy, lively crowd. At the northeast corner of Twenty-sixth street is the Hotel Brunswick, and on the southwest corner of Twenty-seventh street the Stevens House, both monster buildings rented in flats to families of wealth. At the northwest corner of Twenty-ninth street, is a handsome church of white granite, belonging to the Dutch Reformed faith, and familiarly known as the "Church of the Holy Rooster," from the large gilt cock on the spire. At the northwest corner of Thirty-fourth street is the new marble residence of Mr. A. T. Stewart, the most magnificent dwelling house in the land. Immediately opposite is a fine brown stone mansion, occupied at present by Mr. Stewart. On the southeast corner of Thirty-fifth street, is Christ Church (Episcopal), and on the northwest corner of Thirty-seventh street the Brick Church (Presbyterian), of which Dr. Gardiner Spring is the pastor. At Fortieth street, and extending to Forty-second, the west side of the avenue is