352. Risālah fī al-burhān ʻalá ittikhādh al-muqaddimat allatī ahmalahā Arshimīdis fī tasbīʻ al-dāʼirah wa-kaifīyah dhalika. [Transcribed from MS. Thurston 3, f. 128v l. i - f. 129r l. ix.]
353. Risālah fī al-dawāʼir allatī taḥuddu al-sāʻāt al-zamānīyah. [Transcribed from MS. Thurston 3, f. 126v l. xviii - f. 128r l. xxii.]
359. Risālah fī al-ḥathth ʻalá al-ishtighāl bil-dhikr (fī al-khalwah wa-al-dhikr wa-al-ḥathth ʻalá taṣfiyat al-bāṭin)