The sub-title: A Review and Forecast of the Ecumenical Movement accurately describes this volume which presents in published form the Hoover Lectures on Church Unity delivered by Professor Horton of Oberlin College. In it Professor Horton describes the approaches to ecumenicity made by the international conferences on missions, life and work and faith and order. He analyzes the Amsterdam Conference and the tasks which lie ahead on the road towards church union. Protestant clergymen and others interested in church union should be glad to have this book. But its presentation is not such as to provide inspired reading for the general reader.