What is the stated purpose of Chapter 34, and how does the story of the doctor's nephew support this purpose?

The introduction of Chapter 34 explicitly states its purpose is to continue the narration from the previous chapter regarding the 'Glory of Udi.' It promises to describe the qualities and characteristics of the sacred ash further, offering a story as an 'illustration' that is 'based on experience.' The main story about the doctor from Malegaon and his nephew perfectly serves this objective. It presents a case of a 'terrible disease like a bone-cyst' that could not be cured by any remedy known to physicians. The subsequent healing, facilitated by smearing Udi from Sai's hand, acts as a powerful testament to Udi's 'current majesty.' Therefore, as presented in Chapter 34, the entire account of the boy's suffering and the family's journey to Shirdi functions as a compelling piece of evidence for the miraculous power of Udi.