A Disquisition Concerning Ecclesiastical Councils: Proving, that Not Only Pastors, But Brethren Delegated by the Churches, Have Equally a Right to a Decisive Vote in Such Assemblies : to which is Added, Proposals Concerning Consociation of Churches, Agreed Upon by a Synod, which Convened at Boston, in New England : with a Preface, Containining [sic] a Further Vindication of the Congregational Discipline