Page reproduced from manuscript titled Nihayat el Souíl fi Tashih el Ousoul, writen by Ibn el Shater, the astronomer (died 1375), who introduced objections and consequently corrections to the theory of Ptolemy concerning movement of stars.
Arabic version of Galenís medical manuscript titled Al Diryaq ( The Antidote.) Galen was a Greek physician who founded experimental physiology and was one of the most distinguished physicians of antiquity. who lived between Ö.129-199
Copper astrological computer, made by Mohammad ben Khatlaj al Mously, Baghdad, 1241