CHEMICAL Geber with his teacher and Giafar Ssadik; VIII century. Jabir ibn Hayyann (721-765 or 822); into the Latin Geber; philosopher; geographer and pharmacist Persian is considered the largest Muslim alchemist; who in the history of science marked the transition from alchemy to chemistry. His teacher Ja'far al-Sadiq (702-765); was the sixth Imam Shiite Twelver and astronomer; alchemist; Islamic theologian; writer; philosopher; physician and physicist. Chromos; Liebig figurine series "Chemical famous"; n. 1; Italy in 1929.