Book Reviews : The Segregated Covenant: Race Relations and American Catholics. By WILLIAM A. OSBORNE (New York, Herder and Herder, 1967). 252 pp. $5.95. News from Notting Hill: The Formation of a Group Ministry. By DAVID MASON, GEOFFREY AINGER, NORWYN DENNY (London, Epworth Press, 1967). 63 pp. 6s