1902. Contents Part I. Primitive Christianity: The Beginnings; The Environment; and Conditions of Survival. Contents Part II. Christianity from the Second Century to the Rise of Mohammedanism: Scope and Character of the Unestablished Church; Relations of Church and State; and Failure with Survival. Contents Part III. Medieval Christianity: Expansion and Organization; The Social Life and Structure; The Intellectual Life; and Byzantine Christianity. Contents Part IV. Modern Christianity: The Reformation; Progress of Anti-Christian Thought; Popular Acceptance; and The Relation to Progress.