The subjects treated in the present volume are: (1) The Church and the Sick; (2) Participating in the Mass; (3) Our Churches - the Liturgy and Church Architecture. The theme of Part One naturally raises the question still a favorite subject of theological debate whether Extreme Unction should be regarded as a sacrament of the sick or of the dying. Part two treats of the central issue of the modern liturgical apostolate. Active Participation. It is applying the principles of Active Participation that the question of church design inevitable arises, and it is with this theme that the final section of the book is concerned.