Page:The age of Justinian and Theodora (Volume 1).djvu/83

 boundary is supported on arcades which gradually diminish in altitude on each side as they approach the centre of the inclosure. Interiorly, except at the straight end, a sloping series of marble benches runs continuously round the arena, the level of which is maintained in the sphendone or rounded part by the vaulted substructions based on the incline of the hill. The northern extremity is flanked by a pair of towers, between which, on the ground level, lies the Manganon, offices for the accommodation of horses, chariots, and charioteers. Above the Manganon is placed the Kathisma, the name given to the seat occupied in state by the Emperor,