Hebrew and Judaica Manuscripts at the Bodleian Libraries, Oxford UniversityContents: Isaac ben Joseph Israeli, Yesod Olam (ff. 1r-194r, 199, 203r-217v). Extracts on astronomy and mathematics (ff. 194v-198v, 200r-202v, 234r-236v). Iṣḥak ben Shlomo Al-Aḥdab, Notes on the calendar (f. 218). Isaac ben Elijah ben Aaron ha-Kohen of Syracuse, Treatise on the calendar (ff. 219v-221v). Astronomical tables for 1384 (ff. 222r-233v).