Book Reviews: On the Edge: A History of Poor Black Children, the American Black Mule: His Present Status and His Future, Colored People: A Memoir, a World without Women: The Christian Clerical Culture of Western Science, Battering of Women: The Failure of Intervention and the Case for Prevention On the Edge: A History of Poor Black Children . By NightingaleCarl Husemoller. New York: Basic Books, 1993, xv + 254 pp. The American Black Mule: His Present Status and His Future . Edited by MajorsRichard G. and GordonJacob U.. Chicago: Nelson Hall, 1994, 372 pp. Col