Mathematics and Astronomy. This manuscript is now IO Islamic 1210 in the India Office collections. [metadata: Otto Loth, A Catalogue of the Arabic Manuscripts in the Library of the India Office, (volume 1), no. 757 here with further notations and hyperlinks]. 757. 1210. Size 63/4 in. by 41/4 in.; foll. 10. Twenty lines in a page. An abridgment of the مفتاح الحساب , made by the author himself, and entitled تلخيص المفتاح . It is mentioned in Ḥ. Kh. vi. 12. Begins: الحمد لله الواحد الفرد القديم الصمد . It consists of thirty sections (فصل) . Written in a small Nasta’liḳ, with tables and diagrams. Worm-eaten. The last two leaves are injured. Part of the margin has been cut away, whereby several diagrams and notes have been mutilated. [Gaikwar.]