The Book of Popular Science: The Wonders of Modern Discovery, The Triumphs of Inventive Genius, The Story of all Created Things and the World They Live In, ed. Dexter S. Kimball, Grolier Society, 1947

THE EFFECT OF ELECTRIC STIMULATION ON THE TEMPERATURE OF THE BRAIN AND THE LIVER. NOTE THE OPPOSITE EFFECTS IN EACH INSTANCE WHEN THE STIMULATION IS APPLIED.

Suggested by Jim Fisher

Note the opposite effects in each instance when the stimulation is applied.