But we have as yet dealt chiefly with the external shell of this mass of architecture which, tall and mighty, raises its once impregnable walls and towers against the sky. The beauty of its interior remains briefly to be touched upon, for the fortress palace had, as Clement left it, some analogy with the great Moorish palace of the Alhambra in that it stood outwardly grim and strong, while within it was a shrine of exquisite and luxurious art. The austere Benedict, who, his biographer tells us, left the walls of the consistory naked, appears to have expended little on the pictorial decorations of the halls and chambers erected during his pontificate; but with the elevation of the luxurious and art-loving Clement VI., a new spirit breathes over the fabric. The stern simplicity and noble strength of his predecessor's work assume an internal vesture of richness and beauty; the walls glow with azure and gold; a legion of Gallic sculptors and Italian painters lavish their art on the embellishment of the palace.... Such, in brief outline, was the progress of the mighty fabric and its internal decoration which the great popes of Avignon raised to be their dwelling-place, their fortress, and the ecclesiastical center of Christendom. Tho shorn of all its pristine beauty and robbed of much of its symmetry, it stands to-day in bulk and majesty, much as it stood at the end of Clement VI.'s reign, when a contemporary writer describes it as a quadrangular edifice, enclosed within high walls and towers and constructed in most noble style, and tho it was all most beautiful to look upon, there were three parts of transcendent beauty: the Audientia, the Capella major, and the terraces: and these were so admirably planned and contrived that peradventure no palace comparable to it was to be found in the whole world. The terraces referred to were those raised over the great chapel, and were formed of stone, bedded in asphalt and laid on a staging of stout oak joists; the view from the terraces was unparalleled for range and beauty. The glowing splendor of frescoed walls was enhanced by gorgeous hangings and tapestries and by the magnificent robes and jewels of popes and cardinals. Crowds of goldsmiths--forty were employed at the papal court--embroiderers and silk mercers, made Avignon famous thoughout Europe. In 1337, 318 florins were paid for eight Paris carpets; in 1343 Clement VI. paid 213 florins for green silk hangings, and 254 florins for carpets adorned with roses; in 1348, 400 gold and silver vessels turned the scales at 862 marks, 5 ounces; in the inventory of 1369, despite the fact that the most precious had been sent to Rome, the gold vessels were weighed out at 1,434 marks, 1 ounce; the silver at 5,525 marks 7 ounces.