Christian Unity Necessary for the Conversion of the World: A Sermon, Preached in St. Thomas's Church, New-York, Sunday Evening, June 26, 1836, Before the Bishops, Clergy, and Laity, Constituting the Board of Missions of the Protestant Episcopal Church in the United States of America. By Samuel Farmar Jarvis, D.D. Professor of Oriental Languages and Literature in Washington College, Hartford, Connecticut