writing has been discharged, in order to prepare the vellum for receiving an altogether different text, the latter being generally written at right angles to the former.^[12] This precious document is the celebrated treatise "de Republicâ," by Cicero, written in uncial characters, evidently in an Augustan period, and was discovered by Cardinal Angelo Mai, under a copy of St. Augustine's Commentary on the Psalms, made previous to the 10th century.

The Ambrosian Library at Milan contains a codex of Homer, of equal antiquity with the Cicero, with fifty-eight pictures, much in the style of the Vatican square Virgil. This important MS. has been commented upon by the same distinguished antiquary.^[13]

The Vienna Roman calendar, supposed to have been executed in the 4th century, and embellished with eight allegorical figures of the months, is both an early and very important specimen of Roman illumination, not only on account of the elegance and dexterous execution of these figures, but because it is the most ancient manuscript in which anything like ornament, independent of pictured illustration of the author's text, is introduced. Of little less note in the history of art, is the celebrated Dioscorides of the same imperial library, the date of which is fixed by the fact of its being enriched with a very graceful portrait of the Empress Juliana Anicia, for whom it is known to have been written at the commencement of the 6th century. Both Lambecius^[14] and D'Agincourt give various facsimiles (omitting colour) of the fine illustrations which decorate this remarkable volume.

Another 5th century Virgil of remarkable purity in the text, although without miniatures, is the well-known "Medicean" of the Laurentian Library at Florence. The Paris Prudentius, in elegant rustic capitals of the 6th century, is another fine codex of the same type. There are, in addition to those already cited, various other early texts of the classics contained in the different public libraries of Europe; and it is singular to remark, that (so far as I have been able to ascertain) none of them are embellished with those richer decorations, which appear to have been reserved after the end of the 5th century, for the great text-books of the Christian, and more particularly of the Eastern Church. Of these sacred volumes, that which is generally supposed to be the oldest complete version of the Bible in Greek,^[15] is the Codex Alexandrinus of the British Museum, attributed, by consent of all the best Palæographers, to the commencement of the 5th century. It is without gold altogether, and has no other illumination than the occasional contrast of red and black inks, and a line slightly flourished, at the close of each book.^[16] The next fragment of the Scriptures, in point of probable date, is the once celebrated Cottonian Genesis, or at least its ghost; for unfortunately a few charred and shrunken fragments are all that have been saved from the disastrous fire which destroyed so many of Sir Robert Cotton's precious volumes in 1731. In its original state, as we know from several collations made previous to the fire, it contained, on 165 pages, no less than 250 miniatures, each about four inches square. Astle^[17] has given a facsimile of a page, which, on comparison with the existing shrivelled fragments, proves that in their present state they are just about one half their original size. The paintings are in all respects antique, and correspond in general character with contemporary secular miniatures. Dr. Waagen^[18] remarks that "only the hatched gold upon the borders, the glories, and the lights on the crimson mantle indicate the commencement of Byzantine art." The great rival to the "Codex Cottonianus Geneseos" is the "Codex Vindobonensis Geneseos," which consists of twenty-six leaves with eighty-eight miniatures. It forms one of the four great lions of the Vienna Imperial Library. These two remarkable versions of Genesis are supposed to be of nearly equal date, and correspond as to the character of the truly antique miniatures very fairly; the fact, however, of the text of the English version being in black ink with very regularly-formed letters, while that of the Vienna one is, for the most part, written in gold and silver, and in less evenly-distributed characters, induces a fair presumption in favour of the greater antiquity of the Cottonian fragments. In the more gorgeous details of the Vienna Genesis, coupled with its square and unadorned classic pictures, we may thus clearly recognize the transition from our first or Latin class of ancient illumination, to our second or purely Byzantine style. We especially designate this class as "Byzantine," because as art in illumination, as in all other branches, declined in the seven-hilled city, it rose in the seat of empire founded in the East by the first great Christian emperor. It is true that ideal art degenerated almost contemporaneously in the capitals of both empires; but in decorative art, at least, there can be no question but that Byzantium gained, as Rome lost, ground. The former no doubt drew fresh inspiration from her close intercourse with the Persian and other nations of the East, while the latter was content to produce little, and that little in slavish reminiscence of the past. Italy no doubt fed the earliest monastic libraries of Western Europe with the quantities of texts of ancient authors we know them to have contained; but we may fairly assume those texts to have been but rarely illustrated, since the original styles of illumination produced in those countries to which the classic volumes travelled, would unquestionably have betrayed an antique influence more strongly than they did, had the means of deriving that influence been brought copiously within their reach.

I proceed now to a slight notice of the second class of ancient codices, that on which the ultimate splendour of the Byzantine school was founded. Fortunately, time has spared to our days several brilliant specimens of the richest of these quasi-classic manuscripts. Of such, the principal are, as Sir Frederick Madden observes,^[19] "the celebrated Codex Argenteus of Ulphilas, written in silver and gold letters on a purple ground, about A.D. 360, which is, perhaps, the most ancient existing specimen of this magnificent mode of caligraphy; after it, may be instanced the copy of Genesis at Vienna," already mentioned, the Psalter of St. Germain des Prés, at Paris, and the fragment of the New Testament in the Cottonian Library, Titus C. xv., all executed in the 5th and 6th centuries.

The first-named of these contains, on about 160 leaves, a considerable portion of the four gospels, and is now preserved in the Royal Library of Upsal, in Sweden. It is the