northern and southern sides, by four columns of Egyptian granite. A Greek cross, inscribed in a quadrangle, represents the form of the edifice; the exact breadth is two hundred and forty-three feet, and two hundred and sixty-nine may be assigned for the extreme length from the sanctuary in the east, to the nine western doors, which open into the vestibule, and from thence into the _narthex_ or exterior portico. That portico was the humble station of the penitents. The nave or body of the church was filled by the congregation of the faithful; but the two sexes were prudently distinguished, and the upper and lower galleries were allotted for the more private devotion of the women. Beyond the northern and southern piles, a balustrade, terminated on either side by the thrones of the emperor and the patriarch, divided the nave from the choir; and the space, as far as the steps of the altar, was occupied by the clergy and singers. The altar itself, a name which insensibly became familiar to Christian ears, was placed in the eastern recess, artificially built in the form of a demi-cylinder; and this sanctuary communicated by several doors with the sacristy, the vestry, the baptistery, and the contiguous buildings, subservient either to the pomp of worship, or the private use of the ecclesiastical ministers. The memory of past calamities inspired Justinian with a wise resolution, that no wood, except for the doors, should be admitted into the new edifice; and the choice of the materials was applied to the strength, the lightness, or the splendor of the respective parts. The solid piles which contained the cupola were composed of huge blocks of freestone, hewn into squares and triangles, fortified by circles of iron, and firmly cemented by the infusion of lead and quicklime: but the weight of the cupola was diminished by the levity of its substance, which consists either of pumice-stone that floats in the water, or of bricks from the Isle of Rhodes, five times less ponderous than the ordinary sort. The whole frame of the edifice was constructed of brick; but those base materials were concealed by a crust of marble; and the inside of St. Sophia, the cupola, the two larger, and the six smaller, semi-domes, the walls, the hundred columns, and the pavement, delight even the eyes of Barbarians, with a rich and variegated picture. A poet, who beheld the primitive lustre of St. Sophia, enumerates the colors, the shades, and the spots of ten or twelve marbles, jaspers, and porphyries, which nature had profusely diversified, and which were blended and contrasted as it were by a skilful painter. The triumph of Christ was adorned with the last spoils of Paganism, but the greater part of these costly stones was extracted from the quarries of Asia Minor, the isles and continent of Greece, Egypt, Africa, and Gaul. Eight columns of porphyry, which Aurelian had placed in the temple of the sun, were offered by the piety