850).

He issued versions of Aristotle, Plato, Hippocrates, Galen, etc.

As to original works, it was the custom of the authorities of colleges to require their professors to prepare treatises on prescribed topics.

Every khalif had his own historian.

Books of romances and tales, such as "The Thousand and One Arabian Nights' Entertainments," bear testimony to the creative fancy of the Saracens.