The walls are set upon a massive footing, which extends sixteen feet below ground, is sixteen feet wide at the base, and narrows to nine feet at the top. From the ground-level to the globes surmounting the spires the walls are of granite, every block accurately cut as to dimension and pattern, and fitted with equal nicety outside and inside. The windows, both arched and oval, all deeply set in their granite recesses, are framed with oolite. Throughout the first story the walls are eight feet thick; in the upper structure the thickness is reduced by stages to a minimum of six feet. The buttresses are uniformly one foot thicker than the walls proper. The building consists of three towers at each end--east and west, and between these extends the main body, suggesting, to the observer at a distance, a vast intermediate nave. In ground-plan the Temple is strikingly symmetrical, each of the central axes being an axis of symmetry. The westerly half is a repetition of the easterly, and the southerly half duplicates the northerly. Lines running north and south through the centre of the three towers at either end are also lines of symmetry, dividing the towers into corresponding parts. Repetition of parts appears also in vertical section. Thus, above the first belt or string course, that is to say, immediately above the basement or first floor, is the second story, indicated without by a series of high arched windows between the buttresses; above these is a series of elliptical or oval windows. The belt course immediately {175} above these oval openings marks the centre of construction as seen in the vertical section of the main body. The upper half, up to the level of the top belt-course, is in general a repetition of the lower. The roof has so little pitch as to be practically flat, there being a rise of but eight feet from edge to centre. Between the end towers, that is to say in the main body of the building, the walls carry nine buttresses or pilasters on both north and south sides. Each of these pilasters rises above the parapets and battlement walls, and is capped by a granite block three and a half feet square at its base and two and a half feet high. Of these pilaster caps, four on either wall are open and constitute the tops of ventilator shafts which extend to the basement. Above the roof level rise the upper sections of the towers with their spires and finials. Octagonal turrets occupy the corners of the towers, and each turret is surmounted by a pyramidal monolith, six feet high and three feet in diameter at the base; the apex of this pyramid is cut to represent an acanthus cluster. Each of the six towers is surmounted by a pyramidal spire, which terminates in a spherical capstone. The cut blocks forming the spires are two feet in thickness; the capstones of the four corner towers are three feet in diameter, while those of the two center towers measure eight inches more.