XXVII.
"THE WHITE HOUSE."
The corner-stone of the Presidents' House was laid on the 13th of October, 1792, and the building was constructed after the designs and under the directions of Captain James Hobon, Architect. After its destruction by the British, in 18 14, the interior was rebuilt by Captain Hobon. It is located at the intersection of Pennsylvania, New York, Connecticut, and Vermont Avenues, which radiate from this point as centre.
The house is constructed of Virginia free-stone, which is excessively porous, and consequently would cause great dampness in the interior, were it not for a thick coat of white lead, which is applied about once in ten years at an enormous expense. The rock used in the construction of the foundation was quarried by Captain Samuel Smallwood (afterward mayor of Washington), on the banks of Rock creek, from the lower or K-street bridge, as far as Lyonshouse wharf. The grounds were formerly enclosed with a high stone wall. The old sycamore trees which stand in the sidewalk on Pennsylvania Avenue, in front of the mansion, occupy a line running parallel with the former site of that wall. The portico on the north front was added
