Introduction. [Signed: H.G.S.]--Early Christian doctrine. By J.H. Allen.--Christianity from the fifth to the fifteenth century. By A.P. Peabody.--Unitarianism and the reformation. By S.C. Beach.--Unitarianism in England. By B. Herford.--The contact of American Unitarianism and German thought. By J.H. Allen.--The church and the parish in Massachusetts. Usage and law. By G.E. Ellis.--Early New England Unitarians. By A.P. Peabody.--Channing. By G.W. Briggs.--Transcendentalism: the New England renaissance. By F. Tiffany.--Theodore Parker. By S.B. Stewart.--Unitarianism and modern literature. By F. Hornbrooke.--Unitarianism and modern Biblical criticism. By J. de Normandie.--Unitarianism and modern scientific thought. By T.R. Slicer.--The law of righteousness. By G. Batchelor.--The relation of Unitarianism to philosophy. By C.C. Everett.--Ecclesiastical and denominational tendencies. By G. Reynolds