Note 430 — Chapter IV · THE SOURCES FOR THE PERIOD 1100–1250 A. D.
Reading edition
De caelo et mundo was the title usually applied in the Middle Ages to the treatise in four books known in the Greek as Περὶ οὐρανοῦ (De caelo). It does not include the De mundo referred to above, p. 365, note 1. In the earlier part of the twelfth century Avicenna’s version of the De caelo et mundo was translated into Latin by Dominicus Gondisalvi (Mandonnet, Siger de Brabant, vol. i, 1911, p. 15, note 1). The fifth book had been translated by Gerard of Cremona. On the work of Dominicus Gondisalvi and John of Seville (Johannes Hispanensis), see Duhem, Système, vol. iii, 1915, pp. 177–183; Thorndike, Magic, 1923, vol. ii, pp. 73–82. Versions of the De caelo from the Greek were also in existence before 1200 (Haskins, Studies, 1924, p. 149).