What can the past tell us of the future of Christianity? Prophecy is notoriously fallible, especially for far distant years. Historians have seen so many predictions disproved by the event that they are wary of venturing upon the dangerous role of forecasters. Yet trends have a way of continuing. We may not be able to depict with accuracy the details of things to come. We may, however, by observing the directions which movements have been taking in the recent past and by noting the forces which are operating to modify them be able to foretell the main courses which they are to follow for the decades immediately before us. Certainly those who essay to shape policies must attempt such analyses. By their knowledge of the past historians should be of assistance in providing both facts about what has transpired and conjectures to aid in plotting the paths to be pursued.