Geometry. **F5090.75 Muhammed ibn Musa ibn Shakir, and others. Verba filiorum Moysi...(Continued) Halle, 1885. [W. Engelmann, Leipizig.] (3), 109-167 pp. [Nova acta der Ksl. Leop.-Carol. deutschen Akademie der Naturforscher. Band 49, Nr. 2.] 4°. Written by Muhammed ibn Misa ibn Shakir and his two brothers Ahmed and Alhasan.