“Prolegomena” to the eighth edition of Tischendorf, and especially the publication of “The Palaeographical Society Greek Testament,” Parts I and II, Leipsic, 1884, 1891, “Facsimiles of Manuscripts and Inscriptions” edited by E. A. Bond and E. M. Thompson, Parts I-XII, London, 1873-82, and a Manual on “Greek and Latin Palaeography” from the hands of Mr. E. Maunde Thompson, of which the proof-sheets have been most kindly placed by the accomplished author at the disposal of the editor of this work, and have furnished to this chapter many elements of enrichment. It may be added, that since manuscripts have been photographed, all other facsimiles have been put in the shade: and in this edition references as a rule will be given only to photographed copies. 2. The _materials_ on which writing has been impressed at different periods and stages of civilization are the following:—Leaves, bark, especially of the lime (_liber_), linen, clay and pottery, wall-spaces, metals, lead, bronze, wood, waxen and other tablets, papyrus, skins, parchment and vellum, and from an early date amongst the Chinese, and in the West after the capture of Samarcand by the Arabs in A.D. 704, paper manufactured from fibrous substances(17). The most ancient manuscripts of the New Testament now existing are composed of vellum or parchment (_membrana_), the term vellum being strictly applied to the delicate skins of very young calves, and parchment to the integuments of sheep and goats, though the terms are as a rule employed convertibly. The word parchment seems to be a corruption of _charta pergamena_, a name first given to skins prepared by some improved process for Eumenes, king of Pergamum, about B.C. 150. In judging of the date of a manuscript on skins, attention must be paid to the quality of the material, the oldest being almost invariably written on the thinnest and whitest vellum that could be procured; while manuscripts of later ages, being usually composed of parchment, are thick, discoloured, and coarsely grained. Thus the Codex Sinaiticus of the fourth century is made of the finest skins of antelopes, the leaves being so large, that a single animal would furnish only two (Tischendorf, Cod. Frid.-August. Prolegomena, §. 1). Its contemporary, the far-famed Codex Vaticanus, challenges universal admiration for the beauty of its vellum: every visitor at the British Museum can observe the excellence of that of the Codex Alexandrinus of the fifth century: that of the Codex Claromontanus of the sixth century is even more remarkable: the material of those purple-dyed fragments of the Gospels which Tischendorf denominates N, also of the sixth century, is so subtle and delicate, that some persons have mistaken the leaves preserved in England (Brit. Mus. Cotton, Titus C xv) for Egyptian papyrus. Paper made of cotton(18) (_charta bombycina_, called also _charta Damascena_ from its place of manufacture) may have been fabricated in the ninth(19) or tenth century,