Chapter XXX

., 1.

[506] Bernardus Silvestris, _De mundi universitate_, i. 2 (ed. by Barach and Wrobel; Innsbrück, 1876). As to Bernard Silvestris, see Clerval, _Écoles de Chartres au moyen âge_, p. 259 _sqq._ and _passim_; also Hauréau (who confuses him with Bernard of Chartres), _Hist. de la phil. scholastique_, ii. 407 _sqq._

[507] See Hauréau, _Hist. etc._ ii. 447-472; R. L. Poole, _Illustrations of Mediaeval Thought_, chap. vi. His _Liber de sex principiis_ is printed in Migne 188, col. 1257-1270.

[508] Werner, “Die Kosmologie und Naturlehre des scholastischen Mittelalters, mit specialler Beziehung auf Wilhelm von Conches,” _Sitzungsb. K. Akad., philos. Klasse_, 1873, Bd. lxxv.; Hauréau, _Hist. etc._ i. 431-446; ibid. _Singularités littéraires, etc._

[509] _Ante_, Vol. I., p. 251.

[510] _Ante_,