It was made a public walk in 1815; and that "city of the dead," shaded by sixty or seventy varieties of trees, is now traversed daily by thousands of the inhabitants of the teeming city of the living around it. From Washington Square I walked to No. 13 South Sixth Street, to view the ancient edifice on the premises of the late P. S. Duponceau, Esq., mentioned by Watson, in his _Annals_, as the "Office of the Secretary of Foreign Affairs." * I was disappointed, for improvement had demolished the venerated building, and stately edifices, dedicated to traffic, occupied its place. Referring to this building, Mr. Watson observes: "It is a house appropriately owned by such a possessor [Duponceau]; for in it he who came as a volunteer to join our fortune, and to aid our cause, as a captain under Baron Steuben, became afterward one of the under secretaries to our minister of Foreign Relations, and in that building gave his active and early services. In the year 1782--3, under that humble roof, presided, as our then Secretary for Foreign Affairs, the Honorable Robert R. Livingston. Up stairs, in the small front room facing the street, sat that distinguished personage, wielding, by his mind and pen, the destinies of our nation. In the adjoining back room sat the two under secretaries--Louis R. Morris, since governor of Vermont,3 and our venerated citizen, Mr. Duponceau. These having charge of the archives of the nation, preserved them all within the inclosure of a small wooden press! The only room down stairs, on the ground floor, was that occupied by the two clerks and the interpreter. One of these clerks, Mr. Henry Remsen, was afterward president of a bank in New York; *** and the other, Mr. Stone, has been governor of Maryland. The translator was the Reverend Mr. Tetard, the pastor of the French Reformed Church." **** The house, at that time, was quite beyond the verge of city population; now the site is near the center of business. There are other localities of lesser note, made memorable by events of the Revolution. I can not note them all, for other scenes of more general interest demand our attention. The curious in such matters may find a full reward in perusing Watson's _Annals of Philadelphia_, which contain nearly all that is worth remembering of the past of that city.