It is, however, of course impossible to kill an ancient and interesting city altogether with boulevards. Palermo, like every other city, has its "bits," to be found without much difficulty by anyone who will quit the beaten track of the two great thoroughfares and go a-questing for them himself. He may thus find enough here and there to remind him that he is living on the "silt" of three, nay, four civilizations, on a fourfold formation to which Greek and Roman, Saracen and Norman, have each contributed its successive layer. It need hardly be said that the latter has left the deepest traces of any. The Palazzo Reale, the first of the Palermitan sights to which the traveller is likely to bend his way, will afford the best illustration of this. Saracenic in origin, it has received successive additions from half-a-dozen Norman princes, from Robert Guiscard downwards, and its chapel, the Cappella Palatina, built by Roger II. in the early part of the twelfth century, is a gem of decorative art which would alone justify a journey to Sicily to behold. The purely architectural beauties of the interior are impressive enough, but the eye loses all sense of them among the wealth of their decoration. The stately files of Norman arches up the nave would in any other building arrest the gaze of the spectator, but in the Cappella Palatina one can think of nothing but mosaics. Mosaics are everywhere, from western door to eastern window, and from northern to southern transept wall. A full-length, life-sized saint in mosaic grandeur looks down upon you from every interval between the arches of the nave, and medallions of saints in mosaic, encircled with endless tracery and arabesque, form the inner face of every arch. Mosaic angels float with outstretched arms above the apse. A colossal Madonna and Bambino, overshadowed by a hovering Père Eternel, peer dimly forth in mosaic across the altar through the darkness of the chancel. The ground is golden throughout, and the somber richness of the effect is indescribable. In Palermo and its environs, in the Church of Martorana, and in the Cathedral of Monreale, no less than here, there is an abundance of that same decoration, and the mosaics of the latter of the two edifices above mentioned are held to be the finest of all; but it is by those of the Cappella Palatina, the first that he is likely to make the acquaintance of, that the visitor, not being an expert or connoisseur in this particular species of art-work, will perhaps be the most deeply impressed.