The earliest instance of the Apostles entering into a scheme of ecclesiastical decoration, as the consecrated and delegated teachers of a revealed religion, occurs in the church of San Giovanni in Fonte at Ravenna.[148] In the centre of the dome is the Baptism of Christ, represented quite in the classical style; the figure of the Saviour being entirely undraped, and the Jordan, signified by an antique river god, sedge-crowned, and bearing a linen napkin as though he were an attendant at a bath. Around, in a circle, in the manner of radii, are the Twelve Apostles. The order is,—Peter, Andrew, James, John, Philip, Bartholomew, Simon, Jude, James Minor, Matthew, Thomas, Paul; so that Peter and Paul stand face to face at one extremity of the circle, and Simon and Bartholomew back to back at the other. All wear pointed caps, and carry the oblation in their hands. Peter has a yellow vest and white mantle; Paul, a white vest and a yellow mantle, and so all round alternately. The name of each is inscribed over his head, and without the title _Sanctus_, which, though admitted into the Calendar in 449, was not adopted in works of art till some years later, about 472. In the next instance, the attributes had not yet been admitted, except in the figures of St. Peter and St. Paul. MOSAIC (A.D. 816). Christ, in the centre, stands on an eminence; in one hand he holds an open book, on which is inscribed _Pax vobis_. St. Peter, with the keys and a cross, stands on the right; and Christ, with his right hand, points to the cross. St. Paul is on the left, with his sword; beyond, there are five Apostles on one side, and four on the other: in all, eleven (Judas being properly omitted). Each holds a book, and all are robed in white; underneath the whole is inscribed, in Latin, the words of our Saviour, ‘Go ye, and teach all nations.’ On the arch to the right, Christ is seated on a throne, and presents the keys to St. Peter, who kneels on one side, and the standard to Constantine, who kneels on the other (alluding, of course, to the famous standard). On the arch to the left, St. Peter is throned, and presents the stole to Pope Leo III., and the standard to Charlemagne. This singular monument, a kind of _résumé_ of the power of the Church, is a restoration of the old mosaic, executed by order of Leo III. in the Triclinium of the old palace of the Lateran, and now on one side of the Scala Santa, the side facing the Porta San Giovanni.