An appointment of national significance is that of the Negro, Dr. Howard Thurman , who has become Dean of the Chapel at Boston University. For this Atlantic Portrait we have turned to a member-at-large of Fellowship Church in San Francisco , of which Dr. Thurman is still a leader and moving spirit. JEAN BURDEN, a native of Illinois and a graduate of the University of Chicago,is now living in Altadena, California,devoting herself to her writing and, with all her heart, to The Church for the Fellowship of All Peoples.