sentences:  The genuineness of the "Vitæ beatorum abbatum Formbacensium Berengeri et Wirntonis, O.S.B.," generally ascribed to Gerhoh, is denied by Wattenbach.The Migne edition of Gerhoh's works is faulty and incomplete.Those of his writings which are of importance for the study of the history of that period were edited by Sackur in the "Monumenta Germaniæ Historica