How does the author use allusion in the novel, Memory?

The author uses mythological allusions to enrich Jonny's adventures. The image of the Pythoness, the snake ring that Jonny carries on his quest and finally gives to Bonny, the use of the number three (Jonny spends three days with Sophie and attempts to leave three times), and the circular imagery that permeates the novel all add to the story. The folk image of the wolf who prowls during the full moon is also established early and used extensively throughout the novel to give a threatening edge to the story.