Fernand Bossier († 2006) was professor of Greek at the University of Antwerp and senior researcher at the De Wulf-Mansion Centre for Ancient, Medieval and Renaissance Philosophy, KU Leuven, Belgium.
Jozef Brams († 2003) was the scientific secretary and later director of the Aristoteles Latinus project at the De Wulf-Mansion Centre for Ancient, Medieval and Renaissance Philosophy, KU Leuven, Belgium.
Aristotle's main physical treatise was one of the standard books which deeply influenced Western science and philosophy. From the twelfth century onwards it was translated several times into Latin during the Middle Ages and it was read and commented upon constantly in schools and universities.
The present edition contains the Translatio vetus. This text basically goes back to James of Venice, but was known in the Middle Ages in different redactions. The edited text is that of our oldest and best witness, ms. Avranches, Bibl. mun. 221. The variant readings proper to other traditions, however, are also mentioned, both in the apparatus and the indices.