Julio Samsó is Professor in the Department of Arabic, University of Barcelona, Spain.

’Thanks to Variorum, the work of historians such as Julio Samsó, who study mainly, but not exclusively, the history of Islamic exact sciences in the western part of the Islamic world and who usually publish in diversified journals and collected works scattered all over the world, can now be made more accessible between the covers of one book. This book in particular is an added blessing, for it not only brings together some of the more specialized articles of Professor Samsó but also includes an updated bibliography in the form of additions and corrections, a detailed general index, and most importantly an index of sexagesimal parameters.’ Journal for the History of Astronomy ’This interesting collection of articles is the second, and very welcome, volume of Samsó's papers in the Variorum series.’ Aestimatio 'This collection of papers by an eminent authority on the history of mathematics and astronomy in medieval Andalusia and the Maghreb will be a welcome addition to the library of all scholars with a serious interest in this area. ... Both Professor Samsó and the publisher deserve our thanks for making this work available to scholars of medieval Islamic astronomy.' Journal of Islamic Studies

• Contents: Preface. Part 1 Al-Andalus: A social approximation to the history of the exact sciences in al-Andalus; Maslama al-Majriti and the star table in the treatise De mensura astrolabii; 7 chapters of Ibn al-Saffar's lost zij (with M. Castells); Ibn al-Zarqalluh on Mercury (with H. Mielgo); World astrology in 11th-century al-Andalus: the epistle on tasyir and the projection of rays by al-Istijji (with H.Berrani); 'Al-Biruni' in al-Andalus; Ibn al-Haytham and Jabir b. Aflah's criticism of Ptolemy's determination of the parameters of Mercury. Part 2 The Maghrib: The computation of planetary longitudes in the zij of Ibn al-Banna (with E. Millás); Andalusian astronomy in 14th-century Fez: al-Zij al-Muwafiq of Ibn Azzuz al-Qusantini; Horoscopes and history: Ibn Azzuz and his retrospective horoscopes related to the battle of El Salado (1340); An outline of the history of Maghribi zijes from the end of the 13th century; Astronomical observations in the Maghrib in the 14th and 15th centuries; On the lunar tables in Sanjaq Dar's Zij al-Sharif. Part 3 The Introduction of Alfonsine Astronomy in the Arab World through the Arabic Translations of Zacut's Almanach Perpetuum: Abraham Zacut and José Vizinho's Almanach Perpetuum in Arabic (16th-19th centuries); On the Arabic translation of the colophon of the Almanach Perpetuum; In pursuit of Zacut's Almanach Perpetuum in the eastern Islamic world; Addenda et corrigenda; Indexes.

Julio Samsó is Professor in the Department of Arabic, University of Barcelona, Spain.

’Thanks to Variorum, the work of historians such as Julio Samsó, who study mainly, but not exclusively, the history of Islamic exact sciences in the western part of the Islamic world and who usually publish in diversified journals and collected works scattered all over the world, can now be made more accessible between the covers of one book. This book in particular is an added blessing, for it not only brings together some of the more specialized articles of Professor Samsó but also includes an updated bibliography in the form of additions and corrections, a detailed general index, and most importantly an index of sexagesimal parameters.’ Journal for the History of Astronomy ’This interesting collection of articles is the second, and very welcome, volume of Samsó's papers in the Variorum series.’ Aestimatio 'This collection of papers by an eminent authority on the history of mathematics and astronomy in medieval Andalusia and the Maghreb will be a welcome addition to the library of all scholars with a serious interest in this area. ... Both Professor Samsó and the publisher deserve our thanks for making this work available to scholars of medieval Islamic astronomy.' Journal of Islamic Studies

• Contents: Preface. Part 1 Al-Andalus: A social approximation to the history of the exact sciences in al-Andalus; Maslama al-Majriti and the star table in the treatise De mensura astrolabii; 7 chapters of Ibn al-Saffar's lost zij (with M. Castells); Ibn al-Zarqalluh on Mercury (with H. Mielgo); World astrology in 11th-century al-Andalus: the epistle on tasyir and the projection of rays by al-Istijji (with H.Berrani); 'Al-Biruni' in al-Andalus; Ibn al-Haytham and Jabir b. Aflah's criticism of Ptolemy's determination of the parameters of Mercury. Part 2 The Maghrib: The computation of planetary longitudes in the zij of Ibn al-Banna (with E. Millás); Andalusian astronomy in 14th-century Fez: al-Zij al-Muwafiq of Ibn Azzuz al-Qusantini; Horoscopes and history: Ibn Azzuz and his retrospective horoscopes related to the battle of El Salado (1340); An outline of the history of Maghribi zijes from the end of the 13th century; Astronomical observations in the Maghrib in the 14th and 15th centuries; On the lunar tables in Sanjaq Dar's Zij al-Sharif. Part 3 The Introduction of Alfonsine Astronomy in the Arab World through the Arabic Translations of Zacut's Almanach Perpetuum: Abraham Zacut and José Vizinho's Almanach Perpetuum in Arabic (16th-19th centuries); On the Arabic translation of the colophon of the Almanach Perpetuum; In pursuit of Zacut's Almanach Perpetuum in the eastern Islamic world; Addenda et corrigenda; Indexes.