2282. Faṣl fī al-ṭarīq alladhī bihi ʻalima Baṭlamiyūs anna markaz al-ḥāmil fī kull wāḥid min al-kawākib al-ʻalawīyah ʻalá muntaṣaf mā bain markazai al-burūj wa-muʻaddal al-masīr.
2287. Faṣl fī taʻdīl azmān al-khusūf, apparently from al-Zīj al-jāmiʻ. [Transcribed from MS. Thurston 3, f. 74v.]
2296. Fawāʼid min al-kitāb. al-mausūm bil-Majisṭī li-Ibn Aflaḥ. A compendium of Jābir ibn Aflaḥʼs astronomical work known as Kitāb al-Haiʼah or Iṣlāḥ al-Majisṭī.
2297. Fawāʼid multaqaṭah min K. ʻInāyat al-idrāk fī dirāyat al-aflāk. [Transcribed from MS. Thurston 3, f. 69v l. xvii - f. 71v l. xxxi.]
2299. Fāʼidah fī kayfīyat ikhrāj al-qīrāṭ min al-ʻadad alladhī ṣaḥḥat minhu al-masʼalah min ayy ʻadad kāna