divided by a central column—a mullion—containing a depiction of Saint James. Vertically, the lower part is formed by the bases of the columns, decorated with fantastic animals, the middle portion consists of columns adorned with statues of the Apostles, and the upper part supports the base of the arches crowning the three doors. The sculpture is intended to serve as an iconographic representation of various symbols derived from the Book of Revelation and books of the Old Testament. Tympanum The arrangement of the tympanum is based on the description of Christ that John the Evangelist makes in Revelation (Chapter 1 v 1 to 18). In the centre, the Pantocrator is shown, with the image of Christ in Majesty, displaying in his hands and feet the wounds of crucifixion. Surrounding Christ is the tetramorph with the figures of the four Evangelists with their attributes: left, top St. John and the eagle and below St. Luke with the ox; on the right above, St. Matthew on the hood of the tax collector and below St. Mark and the lion. On both sides of the evangelists, behind Mark and Luke, there are four angels on each side with the instruments of the Passion of Christ. Some are, without touching them directly, the cross and crown of thorns (left) and lance and four nails (right), another the column in which he was whipped and the jar through which Pontius Pilate proclaimed his innocence. Above the heads of these angels, two large groups of souls of the blessed, forty in all. In the archivolt of the central tympanum are seated the elders of the Apocalypse, each holding a musical instrument, as if preparing a concert in honor of God. Mullion In the mullion, the figure of Saint James is seated with a pilgrim's staff, as a patron of the basilica. St. James appears with a scroll which contains written Misit me Dominus (the Lord sent me). The column just above his head with a capital which represents the temptations of Christ. On three of its sides, facing the inside of the temple, two kneeling angels pray. At the foot of the saint there is another capital with the figures of the Holy Trinity. Under the Apostle there is a representation of the tree of Jesse, the name given to the family tree of Jesus Christ from Jesse, father of King David; this is the first