For a valuable account of Byzantine manuscripts, see Kondakoff, Histoire de l'Art Byzantin, Paris, 1886-1891.
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.
A translation of this curious treatise was published by Didron and Durand, in their Manuel d'iconographie chrétienne; Paris, 1845.
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.
Published by Lambecius, Comment. sur la Bibl. de Vienne, 1776, Vol. III.