Dr. Elisha Perkins was born at Norwich, Connecticut, in the year 1740.
He had practised his profession with a good local reputation for many
years, when he fell upon a course of experiments, as it is related, which
led to his great discovery. He conceived the idea that metallic
substances might have the effect of removing diseases, if applied in a
certain manner; a notion probably suggested by the then recent
experiments of Galvani, in which muscular contractions were found to be
produced by the contact of two metals with the living fibre.

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