_The Fifteen O's_ (Vol. iii., p. 391.).--They are sometimes called _St.
Bridget's Prayers_. I have a very small volume entitled:
"¶ A breefe Directory and playne way how to say the Rosary of our
blessed Lady: with Meditations for such as are not exercised
therein. Whereunto are adioyned the prayers of S. Bryget with
others. Bruges Flandrorum, excudebat Hu. Holost. 1576."