<p style='text-align: justify;'>Seemingly a draft or informal copy (albeit with large lettered chapter heading) of ʿAlī Ibn ʿĪsā, Taḏkirat al-kaḥḥālīn (‘Memorandum for opticians’), introduction and the first discourse (on verso, inverted), and beginning of chapter 3 (recto). See Hyderabad edition, pp. 1 and 9. On verso also jottings in Arabic and Hebrew script.</p>