  5. Aristotle, Meteorology  Ibn Tibbon’s translation of the Meteorology was completed, according to a manuscript colophon, in 1210, while returning by boat from Alexandria. In the preface, he discusses the problems of translating this work: the subject was difficult, the Arabic translation obscure, and the manuscripts corrupt. Thus he consulted manuscripts in Barcelona and Toledo in order to help reconstruct the original. He also examined the commentaries on it by Alexander of Aphrodisias, Avicenna, and Averroes—for textual witnesses and to help understand the text. In some cases, he incorporated translations from the commentators into the translation itself. Ibn Tibbon’s preface to the translation includes the beginnings of a lexicon, perhaps part of a larger project, which was never completed or was incorporated into his larger glossary (to be discussed below).