If we select another MS. of this early period it is the one which may be said to be the oldest existing MS. in which the ornamentation is worthy of as much notice as the pictures. We refer to the Collection of Treatises by Greek physicians on plants, fishing, the chase, and kindred matters in the same library as the Genesis fragment. It goes under the name of "Dioscorides," who was one of the authors, and dates from the beginning of the sixth century. The Genesis is a century older. Engravings from the Dioscorides are given in Labarte's _Arts industriels, etc._, pl. 78, and in Louandre's _Arts somptuaires, etc._, i., pl. 2, 3. Enough has been said on these earlier centuries to show quite clearly the character of the art known as Early Christian. It is simply a continuation of such art as had existed from classical times, and had, in fact, passed from the Greeks, who were artists, to the Romans, who were rarely better than imitators. It is carried on to the period when it again is nourished by Greek ideas in the Later Empire, and once more attains distinction in the splendid revival of art under the Emperor Justinian. NOTE.--Julius Capitolinus, in his Life of the exquisite Emperor Maximin, junior, mentions that the emperor's mother[8] made him a present of a copy of the poems of Homer, written in golden letters on purple[9] vellum. This is the earliest recorded instance of such a book in Christian times. Its date would be about 235 A.D. [8] Quædam parens sua. [9] Purpureos libros. CHAPTER V BYZANTINE ILLUMINATION The rebuilding of the city of Byzantium the beginning of Byzantine art--Justinian's fondness for building and splendour--Description of Paul the Silentiary--Sumptuous garments--The Gospel-book of Hormisdas--Characteristics of Byzantine work--Comparative scarcity of examples--Rigidity of Byzantine rules of art--Periods of Byzantine art--Examples--Monotony and lifelessness of the style.