[22.] L. Gautier, Histoire de la Poésie liturgique etc. ([ch. 4, note 9]) ch. VI, Versus.
[23.] Von den Steinen, Notker der Dichter etc. ([ch. 4, note 25]) I, 40-42.
[24.] Eisenhofer (see [note 12]) I, 522-3.
[25.] Dom A. Wilmart, Auteurs spirituels etc. (Paris, 1932) 26-36.
[26.] R. E. Messenger, Sancta Maria quid est?, Cath. Choirmaster, June, 1950.
[27.] Eisenhofer, supra, I, 100-102.
[28.] Du Cange, see versarius.
[29.] Gulielmus Durandus, Rationale divinorum officiorum (Lugdini, 1612) Bk. IV, De accessu sacerdotis ac pontificis ad altare et de Processione.
[30.] Ibid. fol. 102.
[31.] D. Attwater, Dictionary of Saints (London, 1938) 180.