Describing his novel Letters from Terra, Van Veen (the narrator and main character in VN’s novel Ada, 1969) mentions the poet Max Mispel who discerned in Van's novel the influence of Osberg as well as that of an obscene ancient Arab, expounder of anagrammatic dreams, Ben Sirine, thus transliterated by Captain de Roux, according to Burton in his adaptation of Nefzawi’s treatise on the best method of mating with obese or hunchbacked females: