After this time angels were rarely represented without wings; the absence of wings makes the beautiful nimbed angel on the Trivulzio plaque quite indistinguishable from the figures of Christ on the British Museum plaques with the Passion. It is interesting to note, just about the end of the fourth century, the earliest representation of the symbolism of the Apocalypse in the presence of the Bull of St. Luke and St. Matthew’s Angel. The round shape of the tomb, with the raised tiled roof, is a difficult point, it appears to be the germ of the elaborate circular edifice with a cupola which became such a feature in purely Byzantine Art; but there were many circular tombs[10] in Rome for the artist to copy, and the huge round mass of the Mausoleum of Hadrian consisted of a drum, raised on a square basis, and decorated with columns and statues in a rather similar manner to the tomb on the fine Byzantine plaque with the _Ascension_, in the Munich Museum. Thus we find the two sets of plaques in the British Museum and the Trivulzio tablet closely connected with each other and in touch with the Brescia casket. The workmanship is not so good on the smaller pieces, but on the whole the drawing is fairly correct, the drapery well designed and falling in few and soft folds over the rather chubby forms; and the whole technique is very different from the unyielding draperies and the too minute details of the consular diptychs. Sculpture in ivory prospered, while that in marble declined. The fashion of sculptured marble sarcophagi had almost died out in the sixth century; but the Latin types and traditions were carried on by a series of carved pyxes, till they gradually merged in the Latino-Byzantine Art. These pyxes are little circular boxes made in Italy, and dating practically from the fifth and sixth centuries. Many were of pagan origin, and decorated with mythological subjects, some being used for the toilet requisites of Roman ladies; and others were, doubtless, _accerae_, or boxes for holding incense for heathen worship, such as we see in the hand of the lovely Bacchante on the diptych of the Symmachi family in the Victoria and Albert Museum. Afterwards they found a place in Christian liturgy, being used to hold the Reservation of the Host.