Collection of encrypted correspondence between the compiler and various correspondents, in approximately 150 alphabets, accompanied by transcriptions of the letters in Arabic. The compiler cites Shihāb al-Dīn al-Jindī al-ʻAlāʼī, Burhān al-Dīn al-Qudsī, and Taqī al-Dīn Muḥammad ibn Jaʻfar al-Ḥusaynī as authorities for some of the alphabets. The manuscript is incomplete, lacking its beginning and end. Occasional marginal notes. Some worm damage in margins.
Collection of astronomical works by Naṣīr al-Dīn al-Ṭūsī, which include material on sunset and sunrise, the size of the earth, the moon, the distance to the moon, the distance between the sun and the planets, movement of the spheres, and eclipses. Some marginal notes in another hand, affected by trimming.