[19.] Translations of first lines in Summary by J. M. Neale except 2) C. Bigg, 7) G. R. Woodward. [20.] C. W. Douglas, _Church Music in History and Practice_ (New York, 1937) 168. Chapter Three The Ninth Century Revival: Hymns [1.] J. M. Neale and G. H. Forbes, _The Ancient Liturgies of the Gallican Church_ (Burntisland, 1855) p. v. [2.] P. Jaffé, _Regesta Pontificum Romanorum_ (Lipsiae, 1885-8) 2473 (1900). [3.] _Monumenta Germaniae Historica, Legum sectio_, II, _Capitularia Regum Francorum_, I, _Capitulare primum_, 769; _Capitulare Haristallense_, 779; _Admonitio generalis_, 789; _Synodus Franconofurtensis_, 794; _Epistola de litteris colendis_, 780-800; _Epistola generalis_, 786-800; _Capitulare missorum generale_, 802; _Capitularia missorum specialia_, 802; _Synodus et conventus aquisgrani habita_, 802; _Capitulare de examinandis ecclesiasticis_, 802; _Capitulare missorum_, 803; _Capitulare de causis etc_., 811; _Capitulare aquisgranense_, 801-813; _Capitulare cum episcopis etc_., 780-790; _Capitulare mantuanum primum_, no date, p. 194; _Pippini capitulare Italicum_, 801-810. [4.] _MGH, Legum sectio_, II, _Capitularia Regum Francorum_, I, _Epistola generalis_, no. 30, p. 80; P. Jaffé, _Bibliotheca Rerum Germanicarum_, vol. IV, _Monumenta Carolina_ (Berlin, 1867) 139, 140. [5.] Dom R. Van Doren, _Étude sur l’influence musicale de l’abbaye de Saint-Gall_ (Louvain, 1925) ch. vi, Metz. [6.] E. Mühlbacher, _Deutsche Geschichte unter den Karolingern_ (Stuttgart, 1896) 211; Jaffé, _Monumenta Carolina_, 358ff. [7.] E. Bishop, _Liturgica Historica_ (Oxford, 1918) 49-55. [8.] A. Fortescue, _The Mass_ (London, 1914) 183. [9.] In _Monumenta Germaniae Historica—Poetarum latinorum medii aevi_, vol. iv, edited by P. von Winterfeld (Berlin, 1923). [10.] W. Turner, “Irish Teachers in the Carolingian Revival of Learning,” _Cath. Un. Bulletin_, XIII (Washington, 1907) 384-5; J. J. O’Kelly, _Ireland: Elements of her Early Story_ (Dublin, 1921) ch. viii, _Early Irish on the Continent_. [11.] Einhard, _Vita Caroli_, 21. [12.] L. Gougaud, _Gaelic Pioneers of Christianity, VI-XII Century_ (Dublin, 1923) 60-3. Translated by Victor Collins. [13.] S. Singer, _Die Dichterschule von St. Gallen_ (Leipzig, 1922) _Introd._ (by Peter Wagner) 11. [14.] Turner, _supra_, 570; J. M. Clark, _The Abbey of St. Gall as a Center of Literature and Art_ (Cambridge, 1926) 31. [15.] _Annales Laurissenses, anno 757_ (_MGH, SS_, I, 140). [16.] _Jaffé, Regesta_, 2346 (1799); Notker Balbulus, _Epistolae_ (_MPL_, 131, 1172); _Gesta Caroli_, II, 7. [17.] F. H. Dudden, _Gregory the Great_ (ch. 2, note 9) I, ch. _VI Gregory at Constantinople_. [18.] P. Wagner, “Morgen- und Abendland in der Musikgeschichte,” _Stimmen der Zeit_, Bd. 114 (1927) 138.