That, in order to the binding of the Churches of our colonial empire and the missionary Churches beyond them in the closest union with the Mother-Church, it is necessary that they receive and maintain without alteration the standards of faith and doctrine as now in use in that Church. That, nevertheless, each province should have the right to make such adaptations and additions to the services of the Church as its peculiar circumstances may require. Provided, that no change or addition be made inconsistent with the spirit and principles of the Book of Common Prayer, and that all such changes be liable to revision by any synod of the Anglican Communion in which the said province shall be represented.