Sent to Peter Du Ponceau, president of the American Philosophical Society by John R. W. Dunbar, and read before the society on July 19, 1833. Includes manuscript note in the margin signed by Dunbar who performed a series of electrical experiments on the body of a recently executed criminal. By applying shocks from a battery supplied by Dr. [Julius Timoleon] Ducatel of the University of Maryland, and belonging to Mr. Edmondson, Dunbar was able evoke severe muscular contractions in the corpse.
