Jackson, Thomas Graham, Sir, 1835-1924 · Cambridge, University Press · leaf 253
y JO … CH. xii] RAVENNA, THE EXARCHATE 179 The choir and apse, and their vaults, with the en- s. vitaie The trance arch from the central nave are all lined with glass mosaicsmosaics (Plate XXXVI), of the greatest beauty andimportance. It is true they have declined somewhat inexcellence of drawing from the…