From "_The Ledger_" Office _en route_ once more. There was still the new City Hall to inspect--a day's work in itself. A short drive brought us to the stupendous mass; Mr. Perkins, President of the Commission, and Mr. McArthur, the architect, received the Duke and his friends, and led them over some portion of the vast erection. It would be impossible, without a series of photographs, to give an idea of the "New Public Buildings," as they are called, which are described as "an immense architectural pile," occupying an area of four and a half acres under one roof, in a square of 428 feet, which with the projections for convenience and architectural effect are extended on the flanks to 470 feet from east to west, and 486½ feet from north to south. It is of the Renaissance, "modified and adapted," as the architect states, "to the varied and extensive requirements" of the great American municipality. I am sorry to say that amongst these is included the necessity for a clock-tower or campanile so out-Heroding Herod in its enormous altitude and ungainly bulk as to give in the architectural drawing an idea of comparative meanness to the bold elevation of the building below. It would seem as if the people of Philadelphia were bent upon emulating the Tower of Babel, or at all events of thrusting up towards heaven a shaft of stone which should be far nearer to it than anything hitherto erected by the hand of man; for this clock-tower is to be reared to such a height, that the centre of the clock-face shall be 361 feet above the level of the pavement. The diameter of the face of the clock is in proportion--20 feet--and even that will not be too much for time-keeping in such an elevated position. Those who revel in such details ought really to get the account of the contractor's work, of the 46,000,000 of bricks, and the 476,000 cubic feet of marble, and of the excavations and tonnage of iron used up already in this building, which is to contain the city offices, the law offices of the State, the military headquarters, and in fact everything State and municipal that requires a local habitation and a name for administrative and executive purposes. The reasons for such a creation were well set forth in the oration of Mr. Benjamin Brewster, on the occasion of the laying of the corner stone seven years ago. It causes one to think what "posterity" means when it is used as a phrase to express the people who live after us according to the orator's position, as we read that amongst those whose names posterity will not willingly let die are "Rittenhouse and Bush, Godfrey and Bartram." British posterity very probably would hear of the extinction of these respected memories without a pang--American posterity is called upon to keep them alive for ever. But tall buildings are appropriately inaugurated by tall talk. Penn and Franklin, it must be admitted, notwithstanding the somewhat narrow view of the character of the Great Quaker taken by very eminent