2 volumes, 8vo (217 x 171 mm). Lithographed facsimile throughout, replicating 19 ll. of maghribi script and diagrams within double rule border throughout. (Some worming, heaviest at beginning and end, some toning and spotting.) Contemporary blind-ruled wallet-style goatskin, Arabic script along bottom edge (some wear and staining).

Facsimile printing of Nasir al-Din Tusi's 13th-century commentary on Euclid's elements. His recension is arranged in 15 books, or maqalas, and is based on the translations of al-Hajjaj ibn Yusuf and Thabit ibn Qurra, both of which were completed in the 9th century. The first lithographic press in Morocco was created in 1865 in Meknes and was transferred to Fes, presumably in the same year. The use of lithography allowed maghribi script to be used in North Africa and to retain its character against the saskh script which was more widely used in that region.