Rediscovering a Lost Alchemical Text: The Risālat Mītāwus al-‘uẓmā

In 1971 and 1972, Fuat Sezgin and Manfred Ullmann drew attention to a peculiar alchemist mentioned in various texts, a certain Mītāwus, but whose works had not been preserved. Sezgin saw in the name of this character a corruption of the name of the alchemist Petasios, and Ullmann, more likely, a transcription of the name Matthaeus. In this paper, the author will present a text by this author that he found in an Iranian manuscript, and discuss its content and its attribution