CHAPTER XXII. John of Cappadocia replaced by Theodotus, and Theodotus by Peter Barsyames, the Syrian, an old usurer--His greed--He suppresses the gratuities to the soldiers--Traffic in every kind of employment--Speculation in wheat--Scarcity of provisions at Byzantium--Discontent--Barsyames upheld by Theodora and his own sorceries--His connection with the Manicheans--Their influence over Justinian--Barsyames supersedes John of Palestine as treasury minister--He abolishes the assistance rendered to the unfortunate..