Bobby Leach went over Niagara Falls on 11th July 1911 in a barrel and survived. How did he die?

Leach died when he slipped on an orange peel while on vacation in New Zealand. Leach suffered a fractured leg which was later amputated in hospital due to complications, when gangrene struck Leach succumbed to his injury at the age of 67.

Having defied death a hundred times he at last owed his end to a piece of orange peel. Mr. Leach had just concluded a lecturing tour in New Zealand and was strolling along the pavement close to his flat in Princes Street when he slipped on the orange peel and broke his leg. That was on February 26, since when he had been an invalid. (...) Complications set in and on Monday the leg was amputated, but the patient rapidly weakend and died.