No one can escape the ferment in the life of the Church caused by the ecumenical movement, the discoveries of Biblical research, the liturgical movement and the manifold theological discussions. Up until now the manuals of worship have scarcely reflected these. The importance of Dr. Wright's book on the Holy Communion is his earnest labor to bring the interpretation of the worship of the Church into relationship with truth, old and new. The result is a highly readable discussion of the Lord's Supper, the like of which no one has in his library. The author has written with an eye on his parishioners, so that the work can be understood by laymen, and will be understood even better by their parsons. Although the book follows the outline of the Episcopal Service, it is much more than an Episcopal book, and reflects, in its quotations and illustrations, a real familiarity with the Supper of the Lord as it is celebrated in all branches of the Church. The Rev. Mr. Wright's real familiarity with the Fathers of the Church enables him to lead his readers through that hidden period between the end of the writings now in the New Testament and shape of the Mass as it emerged at Nicea. Dr. Wright shares many insights which, when understood, will help all Christians in their quest for unity, their demand for worship with meaning, and their understanding of the Church as Christ's Living Body. This discussion of the Eucharist is so long overdue, that it should have a very wide appeal.