About the middle of the eighteenth century wide halls leading entirely through the center of the house from front to back were common in large American houses. Where country houses had entrance and garden fronts of almost equal importance, with a large doorway at each end of the hall, the staircase was usually located in a small stair hall to one side of the main hall and at the front or back, as happened to be most convenient with respect to the desired floor plan. Where a small door at the rear opened into a secluded garden, the staircase was located at the rear of the main hall with the door under the staircase. In either case the staircase took the form of a broken flight, with a straight run along one wall rising about two-thirds of the total height to a broad landing across the hall where the direction of the flight reversed. The landing was usually lighted by a large round-topped Palladian window which provided one of the most charming features of the interior as well as the exterior of the house. Inside it was often graced by the "clock on the stairs", a handsome mahogany chair or a tip-table with candlesticks for lighting guests to their rooms. Whitby Hall at Fifty-eighth Street and Florence Avenue, Kingsessing, West Philadelphia, offers a notable instance of this latter type of hall and staircase. The wide hall extends entirely through the western wing, the main entrance being on the flag-paved piazza of the south front. On the north front there is a tower-like projection in which the staircase ascends with a broad landing across the rear wall and a low outside door beneath. This unusual arrangement permits side windows on the landing in addition to the great Palladian window in the middle, so that both the upper and lower halls are flooded with light.