O. No less than nine small fragments have borne this mark. O of Wetstein was given by Anselmo Banduri to Montfaucon, and contains only Luke xviii. 11-14: _this_ Tischendorf discards as taken from an Evangelistarium (of the tenth century, as he judges from the writing) chiefly because it wants the number of the section at ver. 14. In its room he puts for Cod. O Moscow Synod. 120 (Matthaei, 15), a few leaves of about the ninth century (containing the fifteen verses, John i. 1, 3, 4; xx. 10-13; 15-17; 20-24, with some scholia), which had been used for binding a copy of Chrysostom’s Homilies on Genesis, brought from the monastery of Dionysius at Mount Athos, and published in Matthaei’s Greek Testament with a facsimile (_see_ ix. 257 &c., and facsimile in tom. xii). Further portions of this fragment were seen at Athos in 1864 by Mr. Philip E. Pusey. Tregelles has also appended it to his edition of Cod. Ξ. In this fragment we find the cross-like _psi_, the interrogative “;” (John xx. 13), and the comma (ib. ver. 12). Alford’s Frag. Ath. b=Tisch. We—p. 145—and Frag. Ath. a are probably parts of O. The next five comprise N. T. hymns. COD. Oa. _Magnificat_ and _Benedictus_ in Greek uncials of the eighth or ninth century, in a Latin book at Wolfenbüttel, is published by Tischendorf, Anecdota sacr. et prof. 1855; as is also Ob, which contains these two and _Nunc Dimittis_, of the ninth century, and is at Oxford, Bodleian, Misc. Gr. 5, ff. 313-4(178). Oc. _Magnificat_ in the Verona Psalter of the sixth century (the Greek being written in Latin letters), published by Bianchini (Vindiciae Canon. Script. 1740). Od, Oe, both contain the three hymns, Od in the great purple and silver Zurich Psalter of the seventh century (Tischendorf, Monum. sacra inedita, tom. iv, 1869)(179); Oe of the ninth century at St. Gall (Cod. 17), partly written in Greek, partly in Latin. Of, also of the ninth century, is described by Tischendorf (N. T., eighth edition) once as “Noroff. Petrop.,” once as “Mosquensis.” Og (IX) in the Arsenal Library at Paris (MS. Gr. 2), containing, besides the Psalms and Canticle of the Old Testament, the _Magnificat_, _Benedictus_, and _Nunc Dimittis_, besides the _Lord’s Prayer_, the _Sanctus_ and other such pieces. Oh. Taurinensis Reg. B. vii. 30 (viii or ix), 5-¾ × 4, ff. 303 (20)(180). Psalter with Luke i. 46-55; ii. 29-31. See Gregory, Prolegomena, p. 441.