Ridgeway thanks Ewart for the photograph of a pony's head. He asserts that the conclusion that no asses had evolved west of the Nile is incorrect and cites a renowned Arab historian and geographer, Al-Masudi. He mentions the appearance of curiously striped wild asses in the province of Nubia, on the West side of the Nile. Ridgeway discusses the implications of the infiltration of asses into this area and explores its possible origins. He states that he is writing to Walter Burton Harris, who he thinks would have some knowledge about Arab and Barbary horses, and discusses the links between the Celtic pony and sacrificial asses in Greek myth.