At the end of the 19th century, there was a Dr. Daniel Palmer, a self-taught practitioner of magnetic therapy, living in the state of Iowa in the US. A janitor in the same block where Palmer had his office had been deaf for 17 years.
十九世紀末，一位居住在美國愛荷華州、自學研究磁療的帕爾曼先生，調整一位失聰十七年工人的脊椎，奇蹟式地恢復了他的聽力。