While the educational work in the convent schools was for the most part not carried on beyond what might be called elementary classes, there were not a few examples of abbesses whose scholastic attainments would rival those of the abbots. Montalembert speaks of convents founded, under the auspices of S. Jerome, by S. Paula and her daughter, and is not prepared to admit that in any essential detail the history of S. Paula is legendary. He reminds us that Hebrew and Greek were the daily study of these two admirable women, who advised S. Jerome in all his difficulties and cheered him under all discouragements.[57] Montalembert is probably on firmer ground when he speaks of the scholarly attainments of S. Aura, the friend of S. Eloi, and of the nun Bertile, whose learned lectures on Holy Scripture drew to Chelles in the sixth century a large concourse of auditors of both sexes. S. Radegonde, known by her profound studies of the three Fathers, S. Gregory, S. Basle, and S. Athanasius, is commemorated by Fortunatus, as is also Gertrude, Abbess of Nivelle, who sent messengers to Rome and to Ireland to buy books.[58] I do not find a record of the date of these book-buying expeditions of the abbess. In Germany, the list of the learned nuns includes S. Lioba, who was said to be so eager for knowledge that she never left her books except for divine service. She was a pupil of S. Boniface, and to her was due the framing of the system of instruction instituted after the mission of S. Boniface in North Germany. Hroswitha, the illustrious nun of Gandersheim (who died in 997), has been referred to more than once. Hroswitha’s dramatic poetry has been preserved for nearly eight centuries, and has had the honour of being reprinted as late as 1857. Her writings included a history in verse of Otho the Great, and the lives of several saints. Her most important works, however, were sacred dramas composed by her to be acted by the nuns of the convent. M. Magin points out that these dramas show an intimate acquaintance with the authors of classic antiquity.[59] Curiously enough, there was, nearly a century earlier, another Hroswitha in Gandersheim, who was the daughter of the Duke of Saxony, and who became the fourth abbess of the convent. She composed a much esteemed treatise on logic.[60] Cecilia, daughter of William the Conqueror, who was Abbess of Kucaen, won fame for her school in grammar, philosophy, and in poetry. Herrad of Landsberg, who governed forty-six noble nuns at Mont St. Odile in Alsace, composed, under the name of _Hortus Delictarum_, a sort of cosmology, which is recorded as the first attempt at a scientific encyclopædia, and which is noted for the breadth of its ideas on painting, philosophy, mythology, and history. This was issued shortly after the death of William the Conqueror.[61] To the Abbess of Eichstadt, who died about 1120, Germany is indebted for the preservation of the _Heldenbuch_, a treasury of heroic stories.[62]