A treatise on Alchemy: Risala daqa’iq al-mizan wa maqadir al-awzan, North Africa, probably Morocco, 19th century, 10ff., Arabic manuscript on paper, most pages with 23ll. of sepia script, corrections in red, the main text followed by other short treatises, including Kitab al-misbah and another text mentioning Abu Zakariya (probably Muhammad bin Zakariya al-Razi (d.925 AD)), this added part with three diagrams, in red morocco with flap, folio 23 x 18cm. Please refer to department for condition report