[6.] Augustine, _Confessions_ 9, 7 (_MPL_ 32, 770). Translation from _Confessions of S. Augustine, Ancient and Modern Library of Theol. Literature_ (London, 1886). [7.] Translations of first lines: W. J. Copeland, C. Bigg, R. E. Messenger, J. M. Neale. [8.] Translations of first lines: J. M. Neale, E. Caswall. [9.] Translations of first lines: J. M. Neale, H. M. Jones, R. E. Messenger, S. Hurlbut. [10.] Myers, _op. cit._ (see note 3) 18-22. [11.] G. Reese_, Music in the Middle Ages_ (New York, 1940) 104. [12.] Caelius Sedulius, 5th C., an early imitator of Ambrose, wrote a well-known alphabetic hymn, _A solis ortus cardine_. Chapter Two Early Middle Ages: The Old Hymnal [1.] _Regula Sancti Benedicti_, IX. [2.] P. Batiffol, _Historie du Breviare romain_, translated by A. M. Y. Bayley (London, 1912), chap. I. [3.] Dom A. Wilmart, “Le Psautier de la Reine,” (_Cod. Vat. Reg. II_), _Revue Benedictine XXVIII_ (1911) 376 ff. [4.] Walpole, _Early Latin Hymns_, (ch. 1, note 3), xi-xiv. [5.] Laodicea, c. 364, Canon 59. See G. D. Mansi, _Sacrorum conciliorum—collectio_ (Florence, Venet. et Par., 1763) ii, 573; Braga, 563, Mansi ix, 778. [6.] H. F. Muller, “Pre-History of the Medieval Drama,” _Zeitschrift f. romanische Philologie_ 44 (1924) 544-575. [7.] Tours, 567, Mansi xiv, 803. [8.] H. Heimbucher, _Die Orden und Kongregationen der katholischen Kirche_, 3 vols. (Paderborn, 1907) vol. I, 224-236, _Ausbreitung der Benediktinerregel_. [9.] F. H. Dudden, _Gregory the Great_ (London, 1905), 2 vols., II, chap. 8. [10.] See _A. H._ (_Analecta Hymnica Medii Aevi_) 51.24-41, notes. The hymns excepted are nos. 23-30; 34-40; J. Julian, _Dictionary of Hymnology_. _Gregory I., St., Pope_; C. Blume, “Gregor der Grosse als Hymnendichter,” _Stimmen aus Maria-Laach_, 1908, 269 ff. [11.] H. LeClercq, _L’Espagne chrétienne_ (Paris, 1906) 304-5. [12.] Migne, _PL_ 80, 642-700, Braulio’s Letters. [13.] IV Council of Toledo, 633, Canon 2, Mansi x, 616; Canon 13, Mansi x, 622-3. _Sicut igitur orationes, ita et hymnos in laudem Dei compositos, nullus vestrum ulterius improbet, sed pari modo Gallia, Hispaniaque celebret: excommunicatione plectendi, qui hymnos rejicere fuerint ausi._ [14.] See R. E. Messenger, “The Mozarabic Hymnal,” _TAPhA_ 75 (1944) 103-126. [15.] _The Irish Liber Hymnorum_, edited by J. H. Bernard and R. Atkinson, _Henry Bradshaw Soc. Pub._ 13, 14 (London, 1897, 1898), 14, 23-6. [16.] _Antiphonary of Bangor_, chap. I, note 4; for history of the manuscript now in the Ambrosian Library at Milan, p. xii-xiii. [17.] Translations of first lines, 1) J. M. Neale, 2), 3), 4) R. E. Messenger. [18.] The Celtic hymns are edited in _A. H._ 51, Part II. See also J. F. Kenney, _Sources for the Early History of Ireland_, 2 vols. (New York, 1929) 252-3, 258-274, _Hymns_.