In the neighborhood of these churches there must not be overlooked, in this part of Fifth Avenue, the residence of Helen Gould, a square-built house with an elaborate portico, at the corner of Fifty-seventh Street. This was originally the home of one of the most extraordinary men ever developed in New York--Jay Gould. He was an orphan boy in Northeastern Pennsylvania, who became a clerk in a country store, a surveyor and map-maker, and finally was employed in a tannery, and to sell its leather first took him to New York. Finally he removed there, and soon became a leading Wall Street stock operator. Nobody ever made such daring ventures; he became the "great bear" on the market, wrecking, pulling down, ruining; controlling newspapers, courts, legislatures, and being even accused of trying to bribe a President. Then, as he acquired wealth, he became an extensive investor in railways and telegraphs, and died, leaving a fortune estimated at $80,000,000. He is buried in a magnificent mausoleum, a miniature of the Pantheon, in Woodlawn Cemetery, in the northern suburbs, and his daughter Helen is trying, by her beneficent charities, to make the best use she can of the share of the money she inherited. Westward from Fifty-first Street are the famous Vanderbilt palaces where most of the sons and daughters of William H. Vanderbilt reside, five grand residences which cost $15,000,000 to build and furnish. Standing among them is the Fifth Avenue Presbyterian Church, said to be the largest and wealthiest in the world of this denomination, where the late pastor, Dr. John Hall, is described as preaching to $250,000,000 every Sunday. This is the most splendid portion of Fifth Avenue, with grand residences all about, and as Central Park is approached, there are also enormous apartment-houses and huge hotels. The avenue reaches the Park at Fifty-ninth Street, and for two miles its grand buildings face that attractive pleasure-ground. At Seventieth Street is the Lenox Library, the benefaction of James Lenox, and at Eighty-second Street the Metropolitan Museum of Art, containing some of the finest collections in the world, and patterned largely after the British Museum. Its treasures of art and science, antiquities and museums, are valued at $9,000,000, and it has an elaborate building fronting on Fifth Avenue, within the Park. CENTRAL PARK.