After a biography of Blessed John Ruysbroeck we come to the heart of the books itself. THIS book touches the culminating point of the trilogy formed by the three treatises addressed by the author to the same person. Certain indications prove this to have been Margaret of Meerbeke, Precentor in the Convent of the Poor Clares at Brussels. The manuscripts do not contain any precise affirmation on this point, it is true, but the title of chapter xii., "Of Celestial Melodies," seems to allude to the charge filled by the Religious in her Convent. Besides, the whole of the treatise sufficiently...