For a valuable account of Byzantine manuscripts, see Kondakoff, Histoire de l'Art Byzantin, Paris, 1886-1891.

[31]

The title Porphyro-genitus, "Born in the purple," referred to the fact that Byzantine Empresses brought forth their children in a magnificent room lined with slabs of polished porphyry.

[32]

A translation of this curious treatise was published by Didron and Durand, in their Manuel d'iconographie chrétienne; Paris, 1845.

[33]

All manuscripts described in this book, from the Byzantine school onwards, may be understood to be in the codex form and written on vellum, unless they are otherwise described.

[34]

Published by Lambecius, Comment. sur la Bibl. de Vienne, 1776, Vol. III.

[35]