Ethanol: The Persian physician, alchemist, polymath and philosopher Muhammad ibn Zakariya al-Razi (854–925)[39] is credited with the discovery of ethanol.[40][41] Farabian theories: three philosophical theories of al-Farabi: the theory of ten intelligences, theory of the intellect and theory of prophecy.[42] Food chains: This was identified by al-Jahiz.[43] Glass manufacturing: Abbas ibn Firnas discovered the process of creating glass from stones.[44] Lusterware: Lustre glazes were applied to pottery in Mesopotamia in the 9th century; the technique soon became popular in Persia and Syria.[45] Earlier uses of lustre are known.