To the Roman Catholic the highest act of worship is the service of the Mass. Here, in consequence, the altar at which it is celebrated is made the most prominent feature of the lower part of the picture. It forms, as it were, a keystone of the arch of figures; the bishops, doctors, and faithful of the Church on Earth. Their worship is directed towards the altar on which rests the receptacle in which the Sacred Bread is reserved. On earth the Church reveres the Bread as the Body of Christ; a symbol of the Body of the risen Christ in Heaven. Above the altar hovers a dove, symbol of the Holy Spirit, through whom the Words of Holy Scripture make known the Glory of the Christ. The sacred books are borne by baby forms, “for of such is the Kingdom of Heaven.” Above the symbol of the Holy Spirit, sits enthroned the Christ, with hands uplifted, showing the wounds that the nails made. On one side sits the Virgin Mother, on the other, John the Baptist, who prepared the way before Him; while to right and left is a row of Apostles, Saints, and Martyrs. Above the circle of glory appears the figure of God the Father, with hands upraised in blessing. On either side of Him float angels and the sky is thick with baby faces of Cherubs and Seraphs, singing “Hosanna.” Down through their midst descend shafts of golden light from the far off infinite Sun of Righteousness.