What is the primary story used in Chapter 34 to illustrate the power of Sai Baba's Udi?

Chapter 34 continues the discussion on the glory of Udi by narrating a specific story as an illustration. The story involves a doctor from Malegaon whose young nephew was suffering from a terrible bone-cyst, also known as Hadyavarn. Despite the doctor's own expertise and attempts by other physicians and surgeons, all medical treatments failed to provide any relief. The family, having exhausted all other options and hearing of the great saint Sai Maharaj in Shirdi, decided to seek his help as a last resort. This story, as detailed in Chapter 34, serves to demonstrate the miraculous healing properties of Sai Baba's Udi on an otherwise incurable disease.