Fols. 141; 18 x 13 cm.; written surface 13-15 x 9.5-11 cm.; 15-22 lines to page; on glazed Arabic and European paper; in naskhi and Fārisi; with catchwords; with vowel signs; entries in red. A collection containing: 1. fol. 1b-10a: Risālah mulakhkhaṣah fī al-ʻamal bi-al-rubʻ al-mawḍūʻ, an astronomical treatise on the use of the quadrant with parallel circles by Muḥammad ibn Aḥmad ibn ʻAbd al-Raḥīm al-Mizzī, A.H. 750 [A.D. 1349]. The copy was made in A.H. 824 [A.D. 1421]. 2. fol. 10b-20b: Waraqāt fī al-ʻamal bi-al-rubʻ al-dāʼirah al-mawḍūʻ, another treatise on the same subject by Jamāl al-Dīn al-Māridīnī, A.H. 809 [A.D. 1406]. See Ahlwardt, Verzeichnis der arabischen Handschriften, 5841. Probably from XVth century. 3. fol. 21b-28a: Risālah fī al-ʻamal bi-al-rubʻ al-mujayyab, an astronomical treatise on the sine quadrant. See Ahlwardt, Verzeichnis der arabischen Handschriften, 5823. The copy was made in A.H. 825 [A.D. 1422]. 4. fol. 29b-93b: al-Durr al-manthūr fī al-ʻamal bi-rubʻ al-dastūr, a treatise on the use of a standard quadrant by Jamāl al-Dīn al-Māridīnī. See Ahlwardt, Verzeichnis der arabischen Handschriften, 5840. The copy was made in ʻUbayh, Lebanon, A.H. 823 [A.D. 1420], by ʻAbd al-Raḥmān ibn Muḥammad ibn Muḥammad, known as Ibn al-Muhallabī. 5. fol. 94b-104b: Tuḥfah-i Niẓāmīyah, a Persian treatise on the calendar and its relation to astronomy by ʻAbd al-Qādir Rūyānī. In 40 short sections with diagrams. Copy made in A.H. 904 [A.D. 1498/9]. 6. fol. 105b-141a: Five astronomical tables. Probably from XVth century. MS in good condition; Arabic leather binding. Acquired from Bārūdī, Beirūt, A.D. 1925.
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