Describe the medical condition and the failed treatments for the boy from Malegaon as mentioned in Chapter 34.

According to the account in Chapter 34, the nephew of a degree-holding doctor from Malegaon was afflicted with a bone-cyst, referred to as Hadyavarn. This condition is described as a most difficult, extraordinary, and painful malady. The chapter emphasizes the failure of conventional medical science to provide a cure. A variety of treatments were attempted by the boy's uncle and his physician friends, including expert and intelligent surgeons. The text explicitly states that all native and foreign treatments were tried, and even surgery was attempted, but all these efforts were exhausted without any success, leaving the family distressed and helpless.