Caption:
Plate from Augustus D. Waller, Introductory address on the electromotive properties of the human heart. Augustus Desiré Waller (July 18, 1856 - March 11, 1922) was a British physiologist. In 1887 he used a capillary electrometer to record the first human electrocardiogram. He created the first practical ECG machine with surface electrodes. He lectured on it in Europe and America, often using his dog Jimmy in his ECG demonstrations.