 The codex is in quarto , and now consists of 773 vellum folios ( 630 in the Old Testament and 143 in the New Testament ) , bound in four volumes ( 279 + 238 + 118 + 144 folios ) . Three volumes contain the Septuagint , Greek version of the Old Testament , with the complete loss of only ten leaves . The fourth volume contains the New Testament with 31 NT leaves lost . In the fourth volume 1 and 2 Clement are also missing leaves , perhaps 3 . 
