Khulasah in Hisab, or 'Summa de Arithmetica' by Baha Al-din Al-Amili, Dated 1228 AH /1813 ADThe book contains 39 pages in black ink, with catchwords and titles written in red ink. The manuscript also with multiple interlinear corrections in Persian and Arabic. Copied 1228 AH or 1813. In the original leather binding.The book is a popular textbook amount the Safavids, written by Bahaa al-Din Muhammad ibn Husayn al-Amili. Consisting of an introduction, 9 chapters and a conclusion. Chapter One: Calculation of the IntegersChapter Two: Calculating FractionsChapter Three: Extracting Unknowns by Four ProportionsChapter Four: Extracting Unknowns by Calculating Two ErrorsChapter Five: Extracting Unknowns by Working BackwardsChapter Six: On SurveyingChapter Seven: areas being followed by the weight of the earth, the heights, the widths of the rivers and the depths of the wells,Chapter Eight: Extraction of Unknowns Dimensions:(W:15 x H:21 cm)