The east end of the Capilla Mayor is formed by the magnificent retablo, almost four thousand square feet in size. One is immediately struck by its immense proportions and the infinite amount of carving bestowed on it. Its great scheme was conceived in 1482 by the Flemish sculptor Dancart, evidently a man of prolific and versatile imagination. If we try to compare it with the work of English churches, we might best liken it to the great altar screens. This and the retablo at Toledo are probably the richest specimens of mediæval woodwork in existence. Portions of the execution are somewhat inferior to the conception, and yet the artists who labored on it with loving skill until the middle of the following century carried out all their work with a richness and delicacy which make it not only a representative piece of late Gothic sculpture but one of the most magnificent specimens of this branch of Spanish art. Its various portions embrace the whole period of florid Gothic from its earlier, more restrained expression to the very last stroke of the art, when wood was mastered and carved into incredible filigree work as if it had been as soft and pliable as silver leaf. Everything that could be carved is there, figures, foliage, tracery, moldings and mere conventionalized ornament. The central portions are of the earlier fifteenth century, the outer ones, of the late sixteenth, executed under Master Marco Jorge Fernandez. The wood is principally larch, with minor portions of chestnut and pine. The whole field is divided by slender shafts and laboriously carved bands into forty-four compartments representing in high and low relief various scenes from the life of Christ and the Virgin Mary. In the centre is Santa Maria de la Sede, the patron saint of the church, surmounted by a Crucifixion with Saint John and the Virgin on either side. Between the retablo and the rear wall enclosing the rectangle of the Capilla Mayor, there is a dark space known as the Sacristia Alta, where is preserved the Tablas Alfonsinas[18] brought from Constantinople to Paris by Saint Ferdinand's son, Alfonso. Seville ranks high among the churches of Spain in the beauty of its carving. The stone screen that forms the rear of the retablo is filled with admirable Gothic terra-cotta statues, saints, virgins, bishops, martyrs and prelates executed with a little of the curious rigidity of the Dutch School still awaiting its Renaissance emancipation, but with faces full of holy devotion. The modeling is correct and the treatment of the drapery excellent.