In these pages Father Jungmann and Canon O'Connell tell the story of the most vital movement for renewal the Church has ever known. The account they give of the growth here and abroad of the liturgical movement forms a graphic and exciting documentary of the fifty years of hard work initiated in 1909 by a Benedictine monk and reaching its climax in 1963 with the promulgation of the Constitution on the Sacred Liturgy. Father Jungmann describes the origins and growth of the movement on the Continent and in a separate section Canon O'Connell highlights the movement's milestones in the British Isles.