Reading time: 6 minutes
As the eighteenth century came to a close, Dr. Elisha Perkins appeared poised for a truly successful career. He had served his young nation as a surgeon in the Revolutionary War, and even established a private hospital in his own home. He was respected by his colleagues, and stood as a member of the Connecticut Medical Society, which his father had founded.
Still more exciting: in the 1790s, Perkins believed himself to have made an astonishing discovery. During tooth extractions, he noted that patients experienced a brief reduction in pain when their inflamed gums were touched with a metal instrument.