THE PUBLICATION of this book will meet a conscious need among students of Japanese religion and culture because it presents in a series of factual and scholarly, yet not pedantic, expositions one of the significant developments of postwar Japan: the emergence and development of shinko shukyo, or "new religions." Mr. Thomsen, who has given himself to the study of these religions and is one of the younger missionaries who herald a return to the scholarly tradition so greatly neglected among postwar Christian missionaries and students, estimates that the new religions have about eighteen million followers, or one out of every five Japanese. Probably never before in the history of Japan have there been so many kinds of religious innovations and interests. This book is significant on several counts: it reflects the vitality of Japanese religion through the new religions, which perhaps are as representative of this vitality as any of the older traditional religions. It seriously considers this unique phenomenon of Japanese culture, which because of fanatical and superstitious acts among some of the followers has been treated with a reproach mingled with contempt, and because of obvious materialism and even charlatanry has led many to dismiss them with a quip or a laugh. On the other hand, some of the older religious groups are obviously alarmed over the increasing power of the new religions because they are seemingly able to meet many of the felt needs of the Japanese people. Mr. Thomsen considers the religious and sociological factors that have created these movements--the roots from which they have sprung--and goes a considerable distance toward establishing their common bonds. The book is important for the Christian student because it not only describes the encounter which Christianity has had with these new religions, but it also makes clear the difficulties missionaries have had in facing the Oriental syncretic concept of religion.