own, On the Influence of the Moon and The Movement on the Sun, probably drawing heavily on Greek sources.

Recently, a palimpsest with an undertext of Galen, translated by Sergius from Greek to Syriac, gathered the attention of scientists. It contains chapters of Galen's On Simple Drugs that had been lost. The manuscripts upper text dates from the 11th century and the undertext, which contains the translation from Sergius of Reshaina, has been dated to the 9th century.