Within this triumphal arch upon either side rise the tribunes in which the upper loggia of the church itself comes to an end. These tribunes, which are exceedingly beautiful, consist of two triple arches, one above the other on either side, and the columns which support them, with their marvellous capitals, are I suppose among the most glorious left in Christendom. The arches themselves and the lunettes upon either side are encrusted with mosaics. In the lunette upon the right on either side an altar gorgeously draped, Abel offers to God the firstling of his flock and Melchizedek Bread and Wine. Upon the face of the arch we see Moses tending the sheep of Jethro, Moses upon Mount Hebron, and Moses before the burning bush. In the lunette upon the left we have the sacrifice of Abraham of his only son, and the visit of the three angels to Abraham and Sara. Upon the face of the arch we see Jeremiah the Prophet and Moses upon Mount Sinai. Above, upon the balustrades, as it were, of the upper loggia we see angels upholding a circle in which is the sign of the Cross, and above again upon the face of the arches on either side the four Evangelists and their symbols. The vault is entirely covered with ornaments in mosaic, amid which three angels rise and support with uplifted hands the central disc in which is represented the Agnus Dei. Though these mosaics have suffered much from unforeseen disaster and from restoration they still delight us with their richness and splendour, and nothing I think can well be finer than their effect, their decorative effect as a whole. They seem to hang there like some gorgeous Eastern tapestry of Persian stuff, as Dr. Ricci says, some unfading and indestructible tapestry of the Orient left by chance or forgetfulness in the old capital of the West. We now turn to the apse, which we enter under a second triumphal arch upon the face of which we see upon the left the city of Hierusalem and upon the left Bethlehem. A cypress stands at the gate of each, and between them two angels in flight uphold a discus or aureole having within it eight rays. Above this again are three windows about which is spread a gorgeous decoration in mosaic. Beneath within the tribune of the apse we see Our Lord, "beautiful as Apollo," enthroned upon the orb of the world, an angel upon either hand, while to his right stands S. Vitalis to whom He hands a crown, to His left S. Ecclesius bearing the model of this church in his hand. Beneath upon either side stand the two great mosaic pictures, the most marvellous works of the sixth century that have come down to us and perhaps the most glorious and splendid works of art which that age was able to achieve, and it is needless to say that there is nothing like them anywhere in the world.